$WTW
WILLIS TOWERS WATSON PLC Stock $wtw

$wtw Overview Financials Valuation SEC Filings Company Website

2013 Q2 Form 8-K Financial Statement

#000114053613000011 Filed on August 08, 2013

Income Statement

Concept	2013 Q2	2012 Q2	2012
Revenue	$890.0M	$842.0M	$3.480B
YoY Change	5.7%	-2.21%	0.96%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin
YoY Change
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$21.00M	$19.00M	-$79.00M
YoY Change	10.53%		-206.76%
% of Gross Profit
Operating Expenses	$723.0M	$663.0M	$3.705B
YoY Change	9.05%	-5.96%	28.6%
Operating Profit	$167.0M	$179.0M	-$225.0M
YoY Change	-6.7%		-139.75%
Interest Expense	$32.00M	$33.00M	$128.0M
YoY Change	-3.03%		-17.95%
% of Operating Profit	19.16%	18.44%
Other Income/Expense, Net	$4.000M		$16.00M
YoY Change
Pretax Income	$139.0M	$146.0M	-$337.0M
YoY Change	-4.79%		-241.0%
Income Tax	$29.00M	$36.00M	$101.0M
% Of Pretax Income	20.86%	24.66%
Net Earnings	$105.0M	$108.0M	-$446.0M
YoY Change	-2.78%	27.06%	-318.63%
Net Earnings / Revenue	11.8%	12.83%	-12.82%
Basic Earnings Per Share	$0.60	$0.62	-$2.58
Diluted Earnings Per Share	$0.59	$0.61	-$2.58
COMMON SHARES
Basic Shares Outstanding	175.0M shares	173.0M shares	173.0M shares
Diluted Shares Outstanding	178.0M shares	176.0M shares	173.0M shares

Balance Sheet

Concept	2013 Q2	2012 Q2
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$503.0M	$407.0M
Short-Term Investments
Other Short-Term Assets	$207.0M
YoY Change
Inventory
Prepaid Expenses
Receivables	$1.044B
Other Receivables
Total Short-Term Assets	$11.67B
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$452.0M
YoY Change
Goodwill	$2.829B
YoY Change
Intangibles
YoY Change
Long-Term Investments	$177.0M
YoY Change
Other Assets	$205.0M
YoY Change
Total Long-Term Assets	$4.264B
YoY Change
TOTAL ASSETS
Total Short-Term Assets	$11.67B
Total Long-Term Assets	$4.264B
Total Assets	$15.94B
YoY Change
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$88.00M
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt
YoY Change
Long-Term Debt Due
YoY Change
Total Short-Term Liabilities	$10.77B
YoY Change
LONG-TERM LIABILITIES
Long-Term Debt	$2.326B
YoY Change
Other Long-Term Liabilities	$371.0M
YoY Change
Total Long-Term Liabilities	$3.173B
YoY Change
TOTAL LIABILITIES
Total Short-Term Liabilities	$10.77B
Total Long-Term Liabilities	$3.173B
Total Liabilities	$13.94B
YoY Change
SHAREHOLDERS EQUITY
Retained Earnings	$1.653B
YoY Change
Common Stock	$1.207B
YoY Change
Preferred Stock
YoY Change
Treasury Stock (at cost)	$3.000M
YoY Change
Treasury Stock Shares
Shareholders Equity	$1.977B
YoY Change
Total Liabilities & Shareholders Equity	$15.94B
YoY Change

Cashflow Statement

Concept	2013 Q2	2012 Q2	2012
OPERATING ACTIVITIES
Net Income	$105.0M	$108.0M	-$446.0M
YoY Change	-2.78%	27.06%	-318.63%
Depreciation, Depletion And Amortization	$21.00M	$19.00M	-$79.00M
YoY Change	10.53%		-206.76%
Cash From Operating Activities			$525.0M
YoY Change			19.59%
INVESTING ACTIVITIES
Capital Expenditures			$135.0M
YoY Change			21.62%
Acquisitions			$33.00M
YoY Change			230.0%
Other Investing Activities
YoY Change
Cash From Investing Activities			-$172.0M
YoY Change			70.3%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net			$47.00M
YoY Change			-178.33%
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities			-$291.0M
YoY Change			35.98%
NET CHANGE
Cash From Operating Activities			$525.0M
Cash From Investing Activities			-$172.0M
Cash From Financing Activities			-$291.0M
Net Change In Cash			$62.00M
YoY Change			-50.0%
FREE CASH FLOW
Cash From Operating Activities			$525.0M
Capital Expenditures			$135.0M
Free Cash Flow			$390.0M
YoY Change			18.9%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2012Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	19000000	USD
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CY2012Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	413000000	USD
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	us-gaap	Investment Income Dividend InvestmentIncomeDividend	0	USD
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CY2012	us-gaap	Current State And Local Tax Expense Benefit CurrentStateAndLocalTaxExpenseBenefit	1000000	USD
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CY2011	us-gaap	Deferred Foreign Income Tax Expense Benefit DeferredForeignIncomeTaxExpenseBenefit	20000000	USD
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CY2012	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	54000000	USD
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CY2010	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	77000000	USD
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CY2012Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	0	USD
CY2011Q4	us-gaap	Deferred Tax Assets Liabilities Net Noncurrent DeferredTaxAssetsLiabilitiesNetNoncurrent	-10000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	230000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	330000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	44000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	13000000	USD
CY2013Q2	us-gaap	Deferred Tax Assets Net Current DeferredTaxAssetsNetCurrent	10000000	USD
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CY2011Q4	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	22000000	USD
CY2013Q2	us-gaap	Deferred Tax Assets Net Noncurrent DeferredTaxAssetsNetNoncurrent	15000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	28000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Domestic DeferredTaxAssetsOperatingLossCarryforwardsDomestic	23000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	0	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards Foreign DeferredTaxAssetsOperatingLossCarryforwardsForeign	1000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	64000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Operating Loss Carryforwards State And Local DeferredTaxAssetsOperatingLossCarryforwardsStateAndLocal	56000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	45000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits	48000000	USD
CY2011Q4	us-gaap	Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits	105000000	USD
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CY2011Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	102000000	USD
CY2012Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	221000000	USD
CY2010Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	87000000	USD
CY2009Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	92000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	238000000	USD
CY2011Q4	us-gaap	Deferred Tax Liabilities DeferredTaxLiabilities	322000000	USD
CY2012Q4	us-gaap	Deferred Tax Liabilities Current DeferredTaxLiabilitiesCurrent	21000000	USD
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CY2012Q4	us-gaap	Deferred Tax Liabilities Derivatives DeferredTaxLiabilitiesDerivatives	2000000	USD
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CY2011Q4	us-gaap	Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets	149000000	USD
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CY2012Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	136000000	USD
CY2011Q4	us-gaap	Defined Benefit Plan Assets For Plan Benefits Noncurrent DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent	145000000	USD
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CY2011	us-gaap	Defined Benefit Plan Contributions By Employer DefinedBenefitPlanContributionsByEmployer	-135000000	USD
CY2012Q4	us-gaap	Defined Benefit Plan Estimated Future Employer Contributions In Next Fiscal Year DefinedBenefitPlanEstimatedFutureEmployerContributionsInNextFiscalYear	142000000	USD
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CY2011	us-gaap	Defined Contribution Plan Cost Recognized DefinedContributionPlanCostRecognized	40000000	USD
CY2012	us-gaap	Depreciation Depreciation	79000000	USD
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CY2011	us-gaap	Depreciation Depreciation	74000000	USD
	us-gaap	Depreciation Depreciation	47000000	USD
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CY2013Q2	us-gaap	Depreciation Depreciation	21000000	USD
CY2011	us-gaap	Depreciation And Amortization DepreciationAndAmortization	142000000	USD
CY2012	us-gaap	Depreciation And Amortization DepreciationAndAmortization	138000000	USD
CY2010	us-gaap	Depreciation And Amortization DepreciationAndAmortization	145000000	USD
CY2013Q2	us-gaap	Depreciation And Amortization DepreciationAndAmortization	35000000	USD
CY2012Q2	us-gaap	Depreciation And Amortization DepreciationAndAmortization	34000000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	75000000	USD
	us-gaap	Depreciation And Amortization DepreciationAndAmortization	68000000	USD
CY2012	us-gaap	Depreciation Depletion And Amortization DepreciationDepletionAndAmortization	-79000000	USD
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CY2011Q4	us-gaap	Derivative Assets Current DerivativeAssetsCurrent	14000000	USD
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CY2011Q4	us-gaap	Derivative Assets Noncurrent DerivativeAssetsNoncurrent	38000000	USD
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CY2012Q4	us-gaap	Derivative Average Fixed Interest Rate DerivativeAverageFixedInterestRate	0.0271
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CY2012Q2	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-7000000	USD
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CY2012Q2	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	-1000000	USD
CY2013Q2	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	1000000	USD
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CY2013Q2	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	15000000	USD
CY2012Q2	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	9000000	USD
CY2012Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	0	USD
CY2011Q4	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	7000000	USD
CY2013Q2	us-gaap	Derivative Liabilities Current DerivativeLiabilitiesCurrent	9000000	USD
CY2012	us-gaap	Derivative Maturity Dates DerivativeMaturityDates	2015-07-15
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CY2012	us-gaap	Derivatives Reporting Of Derivative Activity DerivativesReportingOfDerivativeActivity	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:17px;text-align:left;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-weight:bold;">Derivative Financial Instruments</font></div><div style="line-height:120%;padding-top:9px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The Company uses derivative financial instruments for other than trading purposes to alter the risk profile of an existing underlying exposure. Interest rate swaps are used to manage interest risk exposures. Forward foreign currency exchange contracts are used to manage currency exposures arising from future income and expenses. The fair values of derivative contracts are recorded in other assets and other liabilities. The effective portions of changes in the fair value of derivatives that qualify for hedge accounting as cash flow hedges are recorded in other comprehensive income. Amounts are reclassified from other comprehensive income into earnings when the hedged exposure affects earnings. If the derivative is designated as and qualifies as an effective fair value hedge, the changes in the fair value of the derivative and of the hedged item attributable to the hedged risk are both recognized in earnings. The amount of hedge ineffectiveness recognized in earnings is based on the extent to which an offset between the fair value of the derivative and hedged item is not achieved. Changes in fair value of derivatives that do not qualify for hedge accounting, together with any hedge ineffectiveness on those that do qualify, are recorded in other operating expenses or interest expense as appropriate.</font></div></div>
CY2012	us-gaap	Description Of Lessor Leasing Arrangements Operating Leases DescriptionOfLessorLeasingArrangementsOperatingLeases	Original non-cancellable lease terms typically are between 10 and 20 years
CY2011	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	195000000	USD
CY2012	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	198000000	USD
CY2010	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	204000000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	105000000	USD
	us-gaap	Dividends Common Stock Cash DividendsCommonStockCash	106000000	USD
CY2012Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	47000000	USD
CY2011Q4	us-gaap	Dividends Payable Current DividendsPayableCurrent	46000000	USD
CY2013Q2	us-gaap	Dividends Payable Current DividendsPayableCurrent	50000000	USD
CY2012	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	-2.58
CY2010	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.68
CY2011	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.18
CY2012Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.62
CY2013Q2	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.60
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.91
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	1.86
CY2011	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.16
CY2010	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.66
CY2012	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	-2.58
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.83
CY2013Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.59
CY2012Q2	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.61
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	1.89
CY2010	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-7000000	USD
CY2012	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	2000000	USD
CY2011	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-4000000	USD
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	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.24
	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.19
CY2013Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.21
CY2012Q2	us-gaap	Effective Income Tax Rate Continuing Operations EffectiveIncomeTaxRateContinuingOperations	0.25
CY2012	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2010	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2011	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
	us-gaap	Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate	0.35
CY2012	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	53000000	USD
CY2010	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	37000000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Cash Received From Exercise Of Stock Options EmployeeServiceShareBasedCompensationCashReceivedFromExerciseOfStockOptions	60000000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	11000000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	9000000	USD
CY2010	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	14000000	USD
CY2012	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	8000000	USD
CY2010	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	10000000	USD
CY2011	us-gaap	Employee Service Share Based Compensation Tax Benefit Realized From Exercise Of Stock Options EmployeeServiceShareBasedCompensationTaxBenefitRealizedFromExerciseOfStockOptions	18000000	USD
CY2009Q4	us-gaap	Equity Method Investment Ownership Percentage EquityMethodInvestmentOwnershipPercentage	0.30
CY1997Q4	us-gaap	Equity Method Investment Ownership Percentage EquityMethodInvestmentOwnershipPercentage	0.33
CY2010Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	2043000000	USD
CY2011Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	1882000000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Assets EquityMethodInvestmentSummarizedFinancialInformationAssets	1670000000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity EquityMethodInvestmentSummarizedFinancialInformationEquity	111000000	USD
CY2011Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity EquityMethodInvestmentSummarizedFinancialInformationEquity	146000000	USD
CY2010Q4	us-gaap	Equity Method Investment Summarized Financial Information Equity EquityMethodInvestmentSummarizedFinancialInformationEquity	218000000	USD
CY2012Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilities	1559000000	USD
CY2010Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilities	1825000000	USD
CY2011Q4	us-gaap	Equity Method Investment Summarized Financial Information Liabilities EquityMethodInvestmentSummarizedFinancialInformationLiabilities	1736000000	USD
CY2011	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	-2000000	USD
CY2010	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	43000000	USD
CY2012	us-gaap	Equity Method Investment Summarized Financial Information Net Income Loss EquityMethodInvestmentSummarizedFinancialInformationNetIncomeLoss	-14000000	USD
CY2012	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	497000000	USD
CY2011	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	527000000	USD
CY2010	us-gaap	Equity Method Investment Summarized Financial Information Revenue EquityMethodInvestmentSummarizedFinancialInformationRevenue	510000000	USD
CY2012Q4	us-gaap	Equity Method Investments EquityMethodInvestments	174000000	USD
CY2011Q4	us-gaap	Equity Method Investments EquityMethodInvestments	170000000	USD
CY2013Q2	us-gaap	Equity Method Investments EquityMethodInvestments	177000000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	5000000	USD
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	2000000	USD
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	2000000	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Financing Activities ExcessTaxBenefitFromShareBasedCompensationFinancingActivities	1000000	USD
CY2011	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	5000000	USD
CY2010	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	2000000	USD
CY2012	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	2000000	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	-1000000	USD
	us-gaap	Excess Tax Benefit From Share Based Compensation Operating Activities ExcessTaxBenefitFromShareBasedCompensationOperatingActivities	-1000000	USD
CY2011	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	6000000	USD
CY2010	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	12000000	USD
CY2012	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	23000000	USD
	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	46000000	USD
	us-gaap	Fair Value Of Assets Acquired FairValueOfAssetsAcquired	0	USD
CY2012Q1	us-gaap	Fees And Commissions FeesAndCommissions	12000000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	289000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	353000000	USD
CY2013Q2	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	331000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	178000000	USD
CY2013Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	187000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	55000000	USD
CY2013Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	29000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	30000000	USD
CY2013Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	31000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	35000000	USD
CY2013Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	36000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	40000000	USD
CY2013Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	41000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	47000000	USD
CY2013Q2	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	49000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	738000000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	709000000	USD
CY2013Q2	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	704000000	USD
CY2012Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	385000000	USD
CY2011Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	420000000	USD
CY2013Q2	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	373000000	USD
CY2012	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	14000000	USD
CY2011	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-14000000	USD
CY2010	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	-6000000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	13000000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Unrealized ForeignCurrencyTransactionGainLossUnrealized	9000000	USD
CY2012	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	0	USD
CY2010	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	-3000000	USD
CY2011	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	6000000	USD
	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	3000000	USD
	us-gaap	Gain Loss On Sale Of Other Assets GainLossOnSaleOfOtherAssets	3000000	USD
CY2011Q4	us-gaap	Goodwill Goodwill	3295000000	USD
CY2012Q4	us-gaap	Goodwill Goodwill	2827000000	USD
CY2010Q4	us-gaap	Goodwill Goodwill	3294000000	USD
CY2013Q2	us-gaap	Goodwill Goodwill	2829000000	USD
CY2011	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	10000000	USD
CY2012	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	12000000	USD
	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	17000000	USD
CY2011	us-gaap	Goodwill Allocation Adjustment GoodwillAllocationAdjustment	2000000	USD
CY2012	us-gaap	Goodwill Allocation Adjustment GoodwillAllocationAdjustment	2000000	USD
CY2011	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2012	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	-492000000	USD
CY2010	us-gaap	Goodwill And Intangible Asset Impairment GoodwillAndIntangibleAssetImpairment	0	USD
CY2012Q4	us-gaap	Goodwill Gross GoodwillGross	3319000000	USD
CY2013Q2	us-gaap	Goodwill Gross GoodwillGross	3321000000	USD
CY2011Q4	us-gaap	Goodwill Gross GoodwillGross	3295000000	USD
CY2013Q2	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	-492000000	USD
CY2012Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	-492000000	USD
CY2011Q4	us-gaap	Goodwill Impaired Accumulated Impairment Loss GoodwillImpairedAccumulatedImpairmentLoss	0	USD
CY2010	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2012	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	492000000	USD
CY2011	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	0	USD
CY2012Q4	us-gaap	Goodwill Impairment Loss GoodwillImpairmentLoss	492000000	USD
CY2011	us-gaap	Goodwill Other Changes GoodwillOtherChanges	1000000	USD
CY2011	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	-9000000	USD
CY2012	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	11000000	USD
	us-gaap	Goodwill Translation And Purchase Accounting Adjustments GoodwillTranslationAndPurchaseAccountingAdjustments	-15000000	USD
CY2012	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	1000000	USD
CY2011	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	3000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	-446000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	203000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	455000000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	107000000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	332000000	USD
	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	324000000	USD
CY2013Q2	us-gaap	Income Loss From Continuing Operations IncomeLossFromContinuingOperations	105000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	239000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	587000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	-337000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	395000000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	431000000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	146000000	USD
CY2013Q2	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	139000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	219000000	USD
CY2010	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	470000000	USD
CY2012	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-433000000	USD
CY2013Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	107000000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	330000000	USD
	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	341000000	USD
CY2012Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	109000000	USD
CY2011	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.17
CY2012	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-2.58
CY2010	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	2.68
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.14
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.29
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-4.65
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.20
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.35
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.49
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.15
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.62
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.91
	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.86
CY2013Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.60
CY2010	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	2.66
CY2011	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.15
CY2012	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-2.58
CY2011Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.48
CY2011Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.20
CY2012Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.28
CY2012Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.15
CY2012Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-4.65
CY2011Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.14
CY2011Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.34
CY2012Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.61
CY2013Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.59
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.83
	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.89
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	1000000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	1000000	USD
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	1000000	USD
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2013Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Attributable To Reporting Entity IncomeLossFromDiscontinuedOperationsNetOfTaxAttributableToReportingEntity	0	USD
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.01
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2013Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.00
CY2012	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2011	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.01
CY2010	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2012Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2012Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2011Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2011Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2012Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2011Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2012Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
CY2011Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2013Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.00
CY2011	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	12000000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	5000000	USD
CY2010	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	23000000	USD
CY2012Q2	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-1000000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	14000000	USD
CY2013Q2	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	-3000000	USD
	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	12000000	USD
CY2010	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	18000000	USD
CY2011	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	5000000	USD
CY2012	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	2000000	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	4000000	USD
	us-gaap	Income Loss From Equity Method Investments Net Of Dividends Or Distributions IncomeLossFromEquityMethodInvestmentsNetOfDividendsOrDistributions	10000000	USD
CY2011	us-gaap	Income Tax Effects Allocated Directly To Equity Prior Period Adjustment IncomeTaxEffectsAllocatedDirectlyToEquityPriorPeriodAdjustment	-13000000	USD
CY2012	us-gaap	Income Tax Effects Allocated Directly To Equity Prior Period Adjustment IncomeTaxEffectsAllocatedDirectlyToEquityPriorPeriodAdjustment	6000000	USD
CY2010	us-gaap	Income Tax Effects Allocated Directly To Equity Prior Period Adjustment IncomeTaxEffectsAllocatedDirectlyToEquityPriorPeriodAdjustment	-22000000	USD
CY2010	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	140000000	USD
CY2012	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	101000000	USD
CY2011	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	32000000	USD
CY2013Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	29000000	USD
CY2012Q2	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	36000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	104000000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	77000000	USD
CY2011	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	5000000	USD
CY2010	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	0	USD
CY2012	us-gaap	Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance	114000000	USD
CY2011	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-3000000	USD
CY2012	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-3000000	USD
CY2010	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	-4000000	USD
CY2011	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	84000000	USD
CY2010	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	205000000	USD
CY2012	us-gaap	Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate	-118000000	USD
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	15000000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	15000000	USD
CY2010	us-gaap	Income Tax Reconciliation Nondeductible Expense IncomeTaxReconciliationNondeductibleExpense	7000000	USD
CY2010	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2012	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	137000000	USD
CY2011	us-gaap	Income Tax Reconciliation Nondeductible Expense Impairment Losses IncomeTaxReconciliationNondeductibleExpenseImpairmentLosses	0	USD
CY2010	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-26000000	USD
CY2011	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-31000000	USD
CY2012	us-gaap	Income Tax Reconciliation Other Adjustments IncomeTaxReconciliationOtherAdjustments	-31000000	USD
CY2011	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	15000000	USD
CY2010	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	99000000	USD
CY2012	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	63000000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	26000000	USD
	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	21000000	USD
CY2011Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	30000000	USD
CY2012Q4	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	50000000	USD
CY2013Q2	us-gaap	Income Taxes Receivable IncomeTaxesReceivable	32000000	USD
CY2010	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	35000000	USD
CY2011	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	92000000	USD
CY2012	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	17000000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	124000000	USD
	us-gaap	Increase Decrease In Accounts Receivable IncreaseDecreaseInAccountsReceivable	111000000	USD
CY2011	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-17000000	USD
CY2010	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-77000000	USD
CY2012	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-54000000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-11000000	USD
	us-gaap	Increase Decrease In Deferred Income Taxes IncreaseDecreaseInDeferredIncomeTaxes	-16000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-69000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	93000000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	-12000000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	21000000	USD
	us-gaap	Increase Decrease In Other Operating Assets IncreaseDecreaseInOtherOperatingAssets	10000000	USD
CY2012	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	215000000	USD
CY2010	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	96000000	USD
CY2011	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	5000000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	100000000	USD
	us-gaap	Increase Decrease In Other Operating Liabilities IncreaseDecreaseInOtherOperatingLiabilities	214000000	USD
	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	-66000000	USD
	us-gaap	Increase Decrease In Pension Plan Obligations IncreaseDecreaseInPensionPlanObligations	-77000000	USD
CY2012	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	3458000000	USD
CY2011	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	3414000000	USD
CY2010	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	3293000000	USD
CY2013Q2	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	885000000	USD
	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	1931000000	USD
	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	1842000000	USD
CY2012Q2	us-gaap	Insurance Commissions And Fees InsuranceCommissionsAndFees	837000000	USD
CY2012	us-gaap	Insurance Recoveries InsuranceRecoveries	10000000	USD
CY2010	us-gaap	Insurance Recoveries InsuranceRecoveries	0	USD
CY2011	us-gaap	Insurance Recoveries InsuranceRecoveries	0	USD
CY2012Q2	us-gaap	Insurance Recoveries InsuranceRecoveries	5000000	USD
	us-gaap	Insurance Recoveries InsuranceRecoveries	5000000	USD
CY2011	us-gaap	Interest Expense InterestExpense	156000000	USD
CY2012	us-gaap	Interest Expense InterestExpense	128000000	USD
CY2010	us-gaap	Interest Expense InterestExpense	166000000	USD
	us-gaap	Interest Expense InterestExpense	65000000	USD
	us-gaap	Interest Expense InterestExpense	63000000	USD
CY2012Q2	us-gaap	Interest Expense InterestExpense	33000000	USD
CY2013Q2	us-gaap	Interest Expense InterestExpense	32000000	USD
CY2011	us-gaap	Interest Paid Net InterestPaidNet	128000000	USD
CY2012	us-gaap	Interest Paid Net InterestPaidNet	118000000	USD
CY2010	us-gaap	Interest Paid Net InterestPaidNet	163000000	USD
	us-gaap	Interest Paid Net InterestPaidNet	59000000	USD
	us-gaap	Interest Paid Net InterestPaidNet	57000000	USD
CY2012Q4	us-gaap	Interest Payable Current InterestPayableCurrent	34000000	USD
CY2011Q4	us-gaap	Interest Payable Current InterestPayableCurrent	37000000	USD
CY2013Q2	us-gaap	Interest Payable Current InterestPayableCurrent	37000000	USD
CY2012	us-gaap	Investment Income Dividend InvestmentIncomeDividend	0	USD
CY2010	us-gaap	Investment Income Dividend InvestmentIncomeDividend	0	USD
CY2011	us-gaap	Investment Income Dividend InvestmentIncomeDividend	0	USD
CY2013Q2	us-gaap	Investment Income Dividend InvestmentIncomeDividend	0	USD
CY2012Q2	us-gaap	Investment Income Dividend InvestmentIncomeDividend	0	USD
CY2012Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	0	USD
CY2011Q4	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	0	USD
CY2013Q2	us-gaap	Investments In Affiliates Subsidiaries Associates And Joint Ventures InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures	0	USD
CY2010	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1868000000	USD
CY2011	us-gaap	Labor And Related Expense LaborAndRelatedExpense	2087000000	USD
CY2012	us-gaap	Labor And Related Expense LaborAndRelatedExpense	2475000000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1006000000	USD
CY2012Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	500000000	USD
CY2013Q2	us-gaap	Labor And Related Expense LaborAndRelatedExpense	529000000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	1097000000	USD
CY2010	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	131000000	USD
CY2012	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	135000000	USD
CY2011	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	127000000	USD
CY2012Q4	us-gaap	Liabilities Liabilities	13387000000	USD
CY2011Q4	us-gaap	Liabilities Liabilities	13211000000	USD
CY2013Q2	us-gaap	Liabilities Liabilities	13938000000	USD
CY2012Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	15112000000	USD
CY2011Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	15728000000	USD
CY2013Q2	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	15938000000	USD
CY2010	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	18000000	USD
CY2011	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	3000000	USD
CY2012	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	3000000	USD
	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	0	USD
	us-gaap	Liabilities Assumed1 LiabilitiesAssumed1	30000000	USD
CY2012Q4	us-gaap	Liabilities Current LiabilitiesCurrent	10194000000	USD
CY2011Q4	us-gaap	Liabilities Current LiabilitiesCurrent	9996000000	USD
CY2013Q2	us-gaap	Liabilities Current LiabilitiesCurrent	10765000000	USD
CY2011Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	3215000000	USD
CY2012Q4	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	3193000000	USD
CY2013Q2	us-gaap	Liabilities Noncurrent LiabilitiesNoncurrent	3173000000	USD
CY2012	us-gaap	Line Of Credit Facility Increase Additional Borrowings LineOfCreditFacilityIncreaseAdditionalBorrowings	2000000	USD
CY2012Q4	us-gaap	Line Of Credit Facility Maximum Borrowing Capacity LineOfCreditFacilityMaximumBorrowingCapacity	500000000	USD
CY2011Q4	us-gaap	Litigation Reserve Noncurrent LitigationReserveNoncurrent	196000000	USD
CY2012Q4	us-gaap	Litigation Reserve Noncurrent LitigationReserveNoncurrent	180000000	USD
CY2010Q4	us-gaap	Litigation Reserve Noncurrent LitigationReserveNoncurrent	179000000	USD
CY2013Q2	us-gaap	Litigation Reserve Noncurrent LitigationReserveNoncurrent	202000000	USD
CY2011Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2354000000	USD
CY2012Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2338000000	USD
CY2013Q2	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	2326000000	USD
CY2012Q4	us-gaap	Minority Interest MinorityInterest	26000000	USD
	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	4000000	USD
CY2011Q4	us-gaap	Minority Interest MinorityInterest	31000000	USD
CY2013Q2	us-gaap	Minority Interest MinorityInterest	23000000	USD
	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	29000000	USD
	us-gaap	Minority Interest Increase From Stock Issuance MinorityInterestIncreaseFromStockIssuance	3000000	USD
	us-gaap	Minority Interest Increase From Stock Issuance MinorityInterestIncreaseFromStockIssuance	0	USD
CY2012	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:11pt;"><div style="padding-left:0px;text-indent:0px;line-height:normal;padding-top:10px;"><table cellpadding="0" cellspacing="0" style="font-family:Times New Roman;font-size:10pt;width:99.80506822612085%;border-collapse:collapse;text-align:left;"><tr><td colspan="2" rowspan="1"></td></tr><tr><td width="5%" rowspan="1" colspan="1"></td><td width="95%" rowspan="1" colspan="1"></td></tr><tr><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-weight:bold;">1.  </font></div></td><td style="vertical-align:top;padding-left:2px;padding-top:2px;padding-bottom:2px;padding-right:2px;" rowspan="1" colspan="1"><div style="text-align:left;font-size:11pt;"><font style="font-family:Arial;font-size:11pt;font-weight:bold;">NATURE OF OPERATIONS</font></div></td></tr></table></div></div><div style="line-height:120%;padding-top:9px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Willis provides a broad range of insurance and reinsurance broking and risk management consulting services to its clients worldwide, both directly and indirectly through its associates. The Company provides both specialized risk management advisory and consulting services on a global basis to clients engaged in specific industrial and commercial activities, and services to small, medium and large corporations through its retail operations.</font></div><div style="line-height:120%;padding-top:9px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In its capacity as an advisor and insurance broker, the Company acts as an intermediary between clients and insurance carriers by advising clients on risk management requirements, helping clients determine the best means of managing risk, and negotiating and placing insurance risk with insurance carriers through the Company’s global distribution network.</font></div></div>
	us-gaap	Nature Of Operations NatureOfOperations	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:12pt;"><font style="font-family:Arial;font-size:12pt;font-weight:bold;">NATURE OF OPERATIONS</font></div><div style="line-height:120%;padding-top:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">Willis provides a broad range of insurance and reinsurance broking and risk management consulting services to its clients worldwide, both directly and indirectly through its associates. The Company provides both specialized risk management advisory and consulting services on a global basis to clients engaged in specific industrial and commercial activities, and services to small, medium and large corporations through its retail operations.</font></div><div style="line-height:120%;padding-top:12px;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In its capacity as an advisor, insurance and reinsurance broker, the Company acts as an intermediary between clients and insurance carriers by advising clients on risk management requirements, helping clients determine the best means of managing risk, and negotiating and placing insurance risk with insurance carriers through the Company’s global distribution network.</font></div></div>
CY2012	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-291000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-293000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-214000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-50000000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-120000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-172000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-94000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-101000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-75000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-66000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	489000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	439000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	525000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	137000000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	158000000	USD
CY2011	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	441000000	USD
CY2012	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	525000000	USD
CY2010	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	491000000	USD
CY2011	us-gaap	Net Income Loss NetIncomeLoss	204000000	USD
CY2010	us-gaap	Net Income Loss NetIncomeLoss	455000000	USD
CY2012	us-gaap	Net Income Loss NetIncomeLoss	-446000000	USD
CY2011Q2	us-gaap	Net Income Loss NetIncomeLoss	85000000	USD
CY2012Q3	us-gaap	Net Income Loss NetIncomeLoss	26000000	USD
CY2011Q4	us-gaap	Net Income Loss NetIncomeLoss	25000000	USD
CY2012Q4	us-gaap	Net Income Loss NetIncomeLoss	-805000000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	60000000	USD
CY2012Q1	us-gaap	Net Income Loss NetIncomeLoss	225000000	USD
CY2012Q2	us-gaap	Net Income Loss NetIncomeLoss	108000000	USD
CY2011Q1	us-gaap	Net Income Loss NetIncomeLoss	34000000	USD
CY2013Q2	us-gaap	Net Income Loss NetIncomeLoss	105000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	333000000	USD
	us-gaap	Net Income Loss NetIncomeLoss	324000000	USD
CY2012	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	13000000	USD
CY2010	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	15000000	USD
CY2011	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	16000000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	6000000	USD
	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	9000000	USD
CY2012Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2000000	USD
CY2013Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	2000000	USD
CY2010Q4	us-gaap	Notional Amount Of Interest Rate Derivatives NotionalAmountOfInterestRateDerivatives	350000000	USD
CY2012Q4	us-gaap	Notional Amount Of Interest Rate Fair Value Hedge Derivatives NotionalAmountOfInterestRateFairValueHedgeDerivatives	350000000	USD
CY2010Q1	us-gaap	Notional Amount Of Interest Rate Fair Value Hedge Derivatives NotionalAmountOfInterestRateFairValueHedgeDerivatives	350000000	USD
CY2012	us-gaap	Operating Expenses OperatingExpenses	3689000000	USD
CY2011	us-gaap	Operating Expenses OperatingExpenses	2881000000	USD
CY2010	us-gaap	Operating Expenses OperatingExpenses	2579000000	USD
CY2011Q3	us-gaap	Operating Expenses OperatingExpenses	670000000	USD
CY2012Q3	us-gaap	Operating Expenses OperatingExpenses	684000000	USD
CY2012Q2	us-gaap	Operating Expenses OperatingExpenses	663000000	USD
CY2011Q1	us-gaap	Operating Expenses OperatingExpenses	768000000	USD
CY2011Q4	us-gaap	Operating Expenses OperatingExpenses	738000000	USD
CY2012Q4	us-gaap	Operating Expenses OperatingExpenses	1646000000	USD
CY2012Q1	us-gaap	Operating Expenses OperatingExpenses	696000000	USD
CY2011Q2	us-gaap	Operating Expenses OperatingExpenses	705000000	USD
	us-gaap	Operating Expenses OperatingExpenses	1359000000	USD
	us-gaap	Operating Expenses OperatingExpenses	1483000000	USD
CY2013Q2	us-gaap	Operating Expenses OperatingExpenses	719000000	USD
CY2010	us-gaap	Operating Income Loss OperatingIncomeLoss	753000000	USD
CY2012	us-gaap	Operating Income Loss OperatingIncomeLoss	-209000000	USD
CY2011	us-gaap	Operating Income Loss OperatingIncomeLoss	566000000	USD
CY2013Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	171000000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	458000000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	496000000	USD
CY2012Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	179000000	USD
CY2012	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	17000000	USD
CY2010	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	22000000	USD
CY2011	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	18000000	USD
CY2011Q4	us-gaap	Other Assets OtherAssets	542000000	USD
CY2012Q4	us-gaap	Other Assets OtherAssets	387000000	USD
CY2013Q2	us-gaap	Other Assets OtherAssets	412000000	USD
CY2011Q4	us-gaap	Other Assets Current OtherAssetsCurrent	259000000	USD
CY2012Q4	us-gaap	Other Assets Current OtherAssetsCurrent	181000000	USD
CY2013Q2	us-gaap	Other Assets Current OtherAssetsCurrent	207000000	USD
CY2012Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	206000000	USD
CY2011Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	283000000	USD
CY2013Q2	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	205000000	USD
CY2012	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-1000000	USD
CY2010	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-1000000	USD
CY2011	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-1000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-1000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-1000000	USD
	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-1000000	USD
	us-gaap	Other Comprehensive Income Amortization Of Defined Benefit Plan Net Prior Service Cost Recognized In Net Periodic Pension Cost Tax OtherComprehensiveIncomeAmortizationOfDefinedBenefitPlanNetPriorServiceCostRecognizedInNetPeriodicPensionCostTax	-1000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	-10000000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	0	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	-3000000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	-3000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	-2000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Cost Credit Arising During Period Before Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostCreditArisingDuringPeriodBeforeTax	-2000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plan Net Prior Service Costs Credit Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlanNetPriorServiceCostsCreditArisingDuringPeriodNetOfTax	-7000000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-167000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	-208000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodNetOfTax	9000000	USD
CY2012	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	36000000	USD
CY2011	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	95000000	USD
CY2010	us-gaap	Other Comprehensive Income Defined Benefit Plans Net Unamortized Gain Loss Arising During Period Tax OtherComprehensiveIncomeDefinedBenefitPlansNetUnamortizedGainLossArisingDuringPeriodTax	5000000	USD
CY2010	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-8000000	USD
CY2012	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	46000000	USD
CY2011	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-29000000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Gain Loss Arising During Period Net Of Tax OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationGainLossArisingDuringPeriodNetOfTax	-88000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax	5000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax	5000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax	6000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax	2000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax	2000000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax	3000000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicBenefitCostBeforeTax	3000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	5000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	4000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	4000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	1000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	1000000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	2000000	USD
	us-gaap	Other Comprehensive Income Loss Amortization Pension And Other Postretirement Benefit Plans Net Prior Service Cost Recognized In Net Periodic Pension Cost Net Of Tax OtherComprehensiveIncomeLossAmortizationPensionAndOtherPostretirementBenefitPlansNetPriorServiceCostRecognizedInNetPeriodicPensionCostNetOfTax	2000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-142000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	68000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-290000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-24000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	12000000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	6000000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax OtherComprehensiveIncomeLossBeforeTax	-13000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToNoncontrollingInterest	-2000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2011	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToNoncontrollingInterest	-1000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToNoncontrollingInterest	-1000000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToNoncontrollingInterest	-1000000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2010	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	70000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-289000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-142000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-23000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	12000000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	6000000	USD
	us-gaap	Other Comprehensive Income Loss Before Tax Portion Attributable To Parent OtherComprehensiveIncomeLossBeforeTaxPortionAttributableToParent	-12000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	9000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	-5000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	5000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	14000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	2000000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	7000000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Before Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesBeforeTax	-2000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	6000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-3000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	4000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	11000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	1000000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	5000000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-1000000	USD
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-6000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-3000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-1000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	2000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-3000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-1000000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	-2000000	USD
	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesTax	1000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-29000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	46000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-8000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-15000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Before Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentBeforeTax	-49000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-15000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-49000000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-89000000	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-14000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2010	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
	us-gaap	Other Comprehensive Income Loss Foreign Currency Translation Adjustment Tax OtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentTax	0	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	51000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-204000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-106000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-32000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	6000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	0	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-31000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-2000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-1000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-1000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-1000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2010	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	53000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-203000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-106000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	6000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-31000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-30000000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	0	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeReclassificationAdjustmentsNetOfTax	-39000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	256000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	193000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-65000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-13000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-23000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-13000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentBeforeTax	-78000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-51000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	172000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	156000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	10000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	16000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	9000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-59000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	3000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Benefit Plan Improvement Tax Effect OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansBenefitPlanImprovementTaxEffect	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-203000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	-303000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Net Unamortized Gain Loss Arising During Period Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansNetUnamortizedGainLossArisingDuringPeriodBeforeTax	4000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-84000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	14000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	-37000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	3000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	7000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	19000000	USD
	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansTax	4000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-2000000	USD
	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-3000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-1000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Reclassification Adjustment On Derivatives Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnDerivativesIncludedInNetIncomeNetOfTax	-6000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	36000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-17000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	86000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-6000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-8000000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-18000000	USD
	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-6000000	USD
CY2010	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2012	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2011	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest	0	USD
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest	0	USD
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossTaxPortionAttributableToNoncontrollingInterest	0	USD
CY2010	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-17000000	USD
CY2012	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	36000000	USD
CY2011	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	86000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-6000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-8000000	USD
	us-gaap	Other Comprehensive Income Loss Tax Portion Attributable To Parent1 OtherComprehensiveIncomeLossTaxPortionAttributableToParent1	-18000000	USD
CY2012	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	47000000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	34000000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	40000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	12000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	14000000	USD
	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	27000000	USD
	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Before Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostBeforeTax	24000000	USD
CY2010	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	29000000	USD
CY2012	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	38000000	USD
CY2011	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	25000000	USD
CY2012Q2	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	8000000	USD
CY2013Q2	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	12000000	USD
	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	17000000	USD
	us-gaap	Other Comprehensive Income Reclassification Of Defined Benefit Plans Net Gain Loss Recognized In Net Periodic Benefit Cost Net Of Tax OtherComprehensiveIncomeReclassificationOfDefinedBenefitPlansNetGainLossRecognizedInNetPeriodicBenefitCostNetOfTax	22000000	USD
	us-gaap	Other Comprehensive Income Unrealized Gain Loss On Derivatives Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedGainLossOnDerivativesArisingDuringPeriodNetOfTax	2000000	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	0	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	2000000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Before Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodBeforeTax	0	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	2000000	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	0	USD
CY2012	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2011	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2010	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	0	USD
CY2012	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	581000000	USD
CY2011	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	656000000	USD
CY2010	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	564000000	USD
CY2013Q2	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	155000000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	311000000	USD
CY2012Q2	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	129000000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	285000000	USD
CY2012	us-gaap	Other Income OtherIncome	4000000	USD
CY2011	us-gaap	Other Income OtherIncome	2000000	USD
CY2010	us-gaap	Other Income OtherIncome	1000000	USD
CY2013Q2	us-gaap	Other Income OtherIncome	2000000	USD
	us-gaap	Other Income OtherIncome	3000000	USD
	us-gaap	Other Income OtherIncome	3000000	USD
CY2012Q2	us-gaap	Other Income OtherIncome	0	USD
CY2011Q4	us-gaap	Other Liabilities OtherLiabilities	645000000	USD
CY2012Q4	us-gaap	Other Liabilities OtherLiabilities	702000000	USD
CY2013Q2	us-gaap	Other Liabilities OtherLiabilities	729000000	USD
CY2012Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	327000000	USD
CY2011Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	282000000	USD
CY2013Q2	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	358000000	USD
CY2011Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	363000000	USD
CY2012Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	375000000	USD
CY2013Q2	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	371000000	USD
CY2012Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	114000000	USD
CY2011Q4	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	88000000	USD
CY2013Q2	us-gaap	Other Sundry Liabilities Current OtherSundryLiabilitiesCurrent	122000000	USD
CY2011Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	66000000	USD
CY2012Q4	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	73000000	USD
CY2013Q2	us-gaap	Other Sundry Liabilities Noncurrent OtherSundryLiabilitiesNoncurrent	81000000	USD
CY2012	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	100000000	USD
CY2011	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2010	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	56000000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	0	USD
CY2010	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2011	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	12000000	USD
CY2012	us-gaap	Payments Of Debt Issuance Costs PaymentsOfDebtIssuanceCosts	0	USD
CY2010	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	176000000	USD
CY2012	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	185000000	USD
CY2011	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	180000000	USD
	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	93000000	USD
CY2010	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	26000000	USD
CY2011	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	13000000	USD
CY2012	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	11000000	USD
	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	10000000	USD
	us-gaap	Payments Of Dividends Minority Interest PaymentsOfDividendsMinorityInterest	8000000	USD
CY2012	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	39000000	USD
CY2011	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	9000000	USD
CY2010	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	10000000	USD
	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	4000000	USD
	us-gaap	Payments To Acquire Additional Interest In Subsidiaries PaymentsToAcquireAdditionalInterestInSubsidiaries	29000000	USD
CY2012	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	33000000	USD
CY2010	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	21000000	USD
CY2011	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	10000000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	4000000	USD
	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	29000000	USD
CY2010	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	1000000	USD
CY2011	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	2000000	USD
CY2012	us-gaap	Payments To Acquire Equity Method Investments PaymentsToAcquireEquityMethodInvestments	0	USD
CY2012	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	2000000	USD
CY2011	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	0	USD
CY2010	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	0	USD
	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	0	USD
	us-gaap	Payments To Acquire Intangible Assets PaymentsToAcquireIntangibleAssets	-1000000	USD
CY2012	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	7000000	USD
CY2010	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	1000000	USD
CY2011	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	5000000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	4000000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	2000000	USD
CY2011	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	111000000	USD
CY2010	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	83000000	USD
CY2012	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	135000000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	63000000	USD
	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	51000000	USD
CY2012	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	-3000000	USD
	us-gaap	Payments To Minority Shareholders PaymentsToMinorityShareholders	-3000000	USD
CY2011Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	270000000	USD
CY2012Q4	us-gaap	Pension And Other Postretirement Defined Benefit Plans Liabilities Current And Noncurrent PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesCurrentAndNoncurrent	282000000	USD
CY2012Q4	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.000115
CY2013Q2	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.000115
CY2013Q2	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000000	shares
CY2012Q4	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	1000000000	shares
CY2013Q2	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2012Q4	us-gaap	Preferred Stock Shares Issued PreferredStockSharesIssued	0	shares
CY2012Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2011Q4	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2013Q2	us-gaap	Preferred Stock Value PreferredStockValue	0	USD
CY2012Q4	us-gaap	Prepaid Expense Noncurrent PrepaidExpenseNoncurrent	24000000	USD
CY2011Q4	us-gaap	Prepaid Expense Noncurrent PrepaidExpenseNoncurrent	45000000	USD
CY2010	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	5000000	USD
CY2011	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	4000000	USD
CY2012	us-gaap	Proceeds From Dividends Received ProceedsFromDividendsReceived	3000000	USD
CY2010	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	36000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	60000000	USD
CY2012	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	53000000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	23000000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	62000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	300000000	USD
CY2011	us-gaap	Proceeds From Issuance Of Medium Term Notes ProceedsFromIssuanceOfMediumTermNotes	794000000	USD
CY2010	us-gaap	Proceeds From Issuance Of Medium Term Notes ProceedsFromIssuanceOfMediumTermNotes	0	USD
CY2012	us-gaap	Proceeds From Issuance Of Medium Term Notes ProceedsFromIssuanceOfMediumTermNotes	0	USD
CY2011Q1	us-gaap	Proceeds From Issuance Of Medium Term Notes ProceedsFromIssuanceOfMediumTermNotes	800000000	USD
CY2011Q1	us-gaap	Proceeds From Issuance Of Medium Term Notes ProceedsFromIssuanceOfMediumTermNotes	800000000	USD
CY2011	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2010	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
CY2012	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	3000000	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	0	USD
	us-gaap	Proceeds From Minority Shareholders ProceedsFromMinorityShareholders	3000000	USD
CY2011	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	0	USD
CY2010	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	0	USD
CY2012	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	1000000	USD
	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	50000000	USD
	us-gaap	Proceeds From Other Debt ProceedsFromOtherDebt	2000000	USD
CY2011	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	13000000	USD
CY2010	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	10000000	USD
CY2012	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	5000000	USD
	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	8000000	USD
	us-gaap	Proceeds From Sale Of Productive Assets ProceedsFromSaleOfProductiveAssets	5000000	USD
CY2010	us-gaap	Proceeds From Unsecured Lines Of Credit ProceedsFromUnsecuredLinesOfCredit	90000000	USD
	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsBeforeTax	8000000	USD
CY2012	us-gaap	Proceeds From Unsecured Lines Of Credit ProceedsFromUnsecuredLinesOfCredit	0	USD
CY2011	us-gaap	Proceeds From Unsecured Lines Of Credit ProceedsFromUnsecuredLinesOfCredit	-90000000	USD
	us-gaap	Proceeds From Unsecured Lines Of Credit ProceedsFromUnsecuredLinesOfCredit	2000000	USD
	us-gaap	Proceeds From Unsecured Lines Of Credit ProceedsFromUnsecuredLinesOfCredit	50000000	USD
CY2010	us-gaap	Profit Loss ProfitLoss	470000000	USD
CY2012	us-gaap	Profit Loss ProfitLoss	-433000000	USD
CY2011	us-gaap	Profit Loss ProfitLoss	220000000	USD
CY2012Q2	us-gaap	Profit Loss ProfitLoss	110000000	USD
CY2012Q3	us-gaap	Profit Loss ProfitLoss	26000000	USD
CY2011Q1	us-gaap	Profit Loss ProfitLoss	42000000	USD
CY2011Q3	us-gaap	Profit Loss ProfitLoss	60000000	USD
CY2012Q4	us-gaap	Profit Loss ProfitLoss	-801000000	USD
CY2012Q1	us-gaap	Profit Loss ProfitLoss	232000000	USD
CY2011Q4	us-gaap	Profit Loss ProfitLoss	29000000	USD
CY2011Q2	us-gaap	Profit Loss ProfitLoss	89000000	USD
	us-gaap	Profit Loss ProfitLoss	342000000	USD
CY2013Q2	us-gaap	Profit Loss ProfitLoss	107000000	USD
	us-gaap	Profit Loss ProfitLoss	330000000	USD
CY2011	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	111000000	USD
CY2012	us-gaap	Property Plant And Equipment Additions PropertyPlantAndEquipmentAdditions	135000000	USD
CY2011	us-gaap	Property Plant And Equipment Disposals PropertyPlantAndEquipmentDisposals	65000000	USD
CY2012	us-gaap	Property Plant And Equipment Disposals PropertyPlantAndEquipmentDisposals	63000000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	881000000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	753000000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	792000000	USD
CY2011Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	406000000	USD
CY2012Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	468000000	USD
CY2013Q2	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	452000000	USD
CY2012	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	16000000	USD
CY2011	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	4000000	USD
CY2010	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	0	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	6000000	USD
	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	2000000	USD
CY2012Q4	us-gaap	Related Party Transaction Due From To Related Party RelatedPartyTransactionDueFromToRelatedParty	0	USD
CY2011Q4	us-gaap	Related Party Transaction Due From To Related Party RelatedPartyTransactionDueFromToRelatedParty	0	USD
CY2013Q2	us-gaap	Related Party Transaction Due From To Related Party RelatedPartyTransactionDueFromToRelatedParty	0	USD
CY2012	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	15000000	USD
CY2011	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	911000000	USD
CY2010	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	209000000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	9000000	USD
	us-gaap	Repayments Of Other Debt RepaymentsOfOtherDebt	8000000	USD
CY2013Q1	us-gaap	Restructuring And Related Cost Number Of Positions Eliminated RestructuringAndRelatedCostNumberOfPositionsEliminated	207	Positions
CY2012Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1427000000	USD
CY2011Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2160000000	USD
CY2013Q2	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	1653000000	USD
CY2010	us-gaap	Revenues Revenues	3332000000	USD
CY2012	us-gaap	Revenues Revenues	3480000000	USD
CY2011	us-gaap	Revenues Revenues	3447000000	USD
CY2012Q1	us-gaap	Revenues Revenues	1013000000	USD
CY2012Q4	us-gaap	Revenues Revenues	871000000	USD
CY2011Q4	us-gaap	Revenues Revenues	819000000	USD
CY2011Q2	us-gaap	Revenues Revenues	861000000	USD
CY2011Q3	us-gaap	Revenues Revenues	760000000	USD
CY2011Q1	us-gaap	Revenues Revenues	1007000000	USD
CY2012Q3	us-gaap	Revenues Revenues	754000000	USD
CY2012Q2	us-gaap	Revenues Revenues	842000000	USD
	us-gaap	Revenues Revenues	1941000000	USD
	us-gaap	Revenues Revenues	1855000000	USD
CY2013Q2	us-gaap	Revenues Revenues	890000000	USD
CY2010	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	1618000000	USD
CY2012	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	2258000000	USD
CY2011	us-gaap	Salaries Wages And Officers Compensation SalariesWagesAndOfficersCompensation	1776000000	USD
CY2012	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	100000000	USD
CY2012	us-gaap	Severance Costs SeveranceCosts	6000000	USD
CY2010	us-gaap	Severance Costs SeveranceCosts	15000000	USD
CY2011	us-gaap	Severance Costs SeveranceCosts	89000000	USD
CY2011	us-gaap	Share Based Compensation ShareBasedCompensation	41000000	USD
CY2010	us-gaap	Share Based Compensation ShareBasedCompensation	47000000	USD
CY2012	us-gaap	Share Based Compensation ShareBasedCompensation	32000000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	17000000	USD
	us-gaap	Share Based Compensation ShareBasedCompensation	21000000	USD
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeited In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod	15000	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Forfeitures Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeituresWeightedAverageGrantDateFairValue	36.28
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod	1756000	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Grants In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriodWeightedAverageGrantDateFairValue	34.13
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	2525000	shares
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Number ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedNumber	1192000	shares
CY2012Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	33.80
CY2011Q4	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Nonvested Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsNonvestedWeightedAverageGrantDateFairValue	31.96
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod	408000	shares
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Equity Instruments Other Than Options Vested In Period Weighted Average Grant Date Fair Value ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodWeightedAverageGrantDateFairValue	29.61
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.034
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.025
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Dividend Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedDividendRate	0.032
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.304
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.321
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Expected Volatility Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsExpectedVolatilityRate	0.314
CY2012	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.009
CY2010	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.022
CY2011	us-gaap	Share Based Compensation Arrangement By Share Based Payment Award Fair Value Assumptions Risk Free Interest Rate ShareBasedCompensationArrangementByShareBasedPaymentAwardFairValueAssumptionsRiskFreeInterestRate	0.022
CY2010	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
CY2012	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P5Y
CY2011	us-gaap	Sharebased Compensation Arrangement By Sharebased Payment Award Fair Value Assumptions Expected Term1 SharebasedCompensationArrangementBySharebasedPaymentAwardFairValueAssumptionsExpectedTerm1	P6Y
	us-gaap	Stock Repurchased During Period Shares StockRepurchasedDuringPeriodShares	1579849	shares
CY2010	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	0	USD
CY2011	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	0	USD
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	0	USD
	us-gaap	Stock Repurchased During Period Value StockRepurchasedDuringPeriodValue	56000000	USD
	wsh	Amortization Of Cash Retention Awards AmortizationOfCashRetentionAwards	3000000	USD
CY2011Q4	us-gaap	Stockholders Equity StockholdersEquity	2486000000	USD
CY2012Q4	us-gaap	Stockholders Equity StockholdersEquity	1699000000	USD
CY2013Q2	us-gaap	Stockholders Equity StockholdersEquity	1977000000	USD
CY2011Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2517000000	USD
CY2012Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	1725000000	USD
CY2010Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2608000000	USD
CY2009Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2229000000	USD
CY2013Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2000000000	USD
CY2012Q2	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	2711000000	USD
CY2012Q4	us-gaap	Time Deposits At Carrying Value TimeDepositsAtCarryingValue	1796000000	USD
CY2011Q4	us-gaap	Time Deposits At Carrying Value TimeDepositsAtCarryingValue	1688000000	USD
CY2012	us-gaap	Treasury Stock Acquired Average Cost Per Share TreasuryStockAcquiredAverageCostPerShare	35.87
CY2011Q4	us-gaap	Treasury Stock Value TreasuryStockValue	3000000	USD
CY2012Q4	us-gaap	Treasury Stock Value TreasuryStockValue	3000000	USD
CY2013Q2	us-gaap	Treasury Stock Value TreasuryStockValue	3000000	USD
CY2011Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	15000000	USD
CY2012Q4	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	12000000	USD
CY2013Q2	us-gaap	Unamortized Debt Issuance Expense UnamortizedDebtIssuanceExpense	11000000	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	37000000	USD
CY2011Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	16000000	USD
CY2010Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	13000000	USD
CY2009Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	17000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	8000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	0	USD
CY2012	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	16000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2010	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	0	USD
CY2012	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	3000000	USD
CY2010	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	7000000	USD
CY2011	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	0	USD
CY2012Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	21000000	USD
CY2012	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-top:9px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"></font></div><div style="line-height:120%;padding-top:9px;text-align:left;font-size:10pt;"><font style="font-family:Arial;font-size:10pt;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;padding-top:9px;text-align:left;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of financial statements in conformity with US GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosures of contingent assets and liabilities as of the dates of the financial statements and the reported amounts of revenues and expenses during the year. In the preparation of these consolidated financial statements, estimates and assumptions have been made by management concerning: the valuation of intangible assets and goodwill (including those acquired through business combinations); the selection of useful lives of fixed and intangible assets; impairment testing; provisions necessary for accounts receivable, commitments and contingencies and accrued liabilities; long-term asset returns, discount rates and mortality rates in order to estimate pension liabilities and pension expense; income tax valuation allowances; and other similar evaluations. Actual results could differ from the estimates underlying these consolidated financial statements. </font></div></div>
CY2012	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	12000000	USD
CY2011	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	15000000	USD
CY2010	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	-4000000	USD
CY2010	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	-4000000	USD
CY2012	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	-15000000	USD
CY2011	us-gaap	Valuation Allowances And Reserves Adjustments ValuationAllowancesAndReservesAdjustments	-3000000	USD
CY2012	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	0	shares
CY2011	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3000000	shares
CY2010	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1000000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	2000000	shares
CY2013Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3000000	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3000000	shares
CY2012Q2	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	3000000	shares
CY2010	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	171000000	shares
CY2012	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	173000000	shares
CY2011	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	176000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	176000000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	177000000	shares
CY2012Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	176000000	shares
CY2013Q2	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	178000000	shares
CY2010	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	170000000	shares
CY2012	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	173000000	shares
CY2011	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	173000000	shares
CY2013Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	175000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	174000000	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	174000000	shares
CY2012Q2	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	173000000	shares
CY2011	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	23000000	USD
CY2010	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	0	USD
CY2012	us-gaap	Write Off Of Deferred Debt Issuance Cost WriteOffOfDeferredDebtIssuanceCost	0	USD
CY2011Q4	wsh	Accrual For Taxes Other Than Income Tax Current AccrualForTaxesOtherThanIncomeTaxCurrent	45000000	USD
CY2012Q4	wsh	Accrual For Taxes Other Than Income Tax Current AccrualForTaxesOtherThanIncomeTaxCurrent	44000000	USD
CY2013Q2	wsh	Accrual For Taxes Other Than Income Tax Current AccrualForTaxesOtherThanIncomeTaxCurrent	52000000	USD
CY2012Q4	wsh	Accrued Cash Retention Awards To Be Paid In Twelve Months AccruedCashRetentionAwardsToBePaidInTwelveMonths	252000000	USD
CY2011Q4	wsh	Accrued Expenses Not Currently Deductible AccruedExpensesNotCurrentlyDeductible	116000000	USD
CY2012Q4	wsh	Accrued Expenses Not Currently Deductible AccruedExpensesNotCurrentlyDeductible	120000000	USD
CY2011	wsh	Accumulated Depreciation Depletion And Amortization Foreign Exchange AccumulatedDepreciationDepletionAndAmortizationForeignExchange	4000000	USD
CY2012	wsh	Accumulated Depreciation Depletion And Amortization Foreign Exchange AccumulatedDepreciationDepletionAndAmortizationForeignExchange	-8000000	USD
CY2011Q4	wsh	Accumulated Other Comprehensive Gain Loss Attributable To Parent Net Of Tax AccumulatedOtherComprehensiveGainLossAttributableToParentNetOfTax	-744000000	USD
CY2012Q4	wsh	Accumulated Other Comprehensive Gain Loss Attributable To Parent Net Of Tax AccumulatedOtherComprehensiveGainLossAttributableToParentNetOfTax	-850000000	USD
CY2010Q4	wsh	Accumulated Other Comprehensive Gain Loss Attributable To Parent Net Of Tax AccumulatedOtherComprehensiveGainLossAttributableToParentNetOfTax	-541000000	USD
CY2012Q4	wsh	Accumulated Other Comprehensive Income Loss Attributable To Noncontrolling Interest AccumulatedOtherComprehensiveIncomeLossAttributableToNoncontrollingInterest	3000000	USD
CY2011Q4	wsh	Accumulated Other Comprehensive Income Loss Attributable To Noncontrolling Interest AccumulatedOtherComprehensiveIncomeLossAttributableToNoncontrollingInterest	3000000	USD
CY2010Q4	wsh	Accumulated Other Comprehensive Income Loss Attributable To Noncontrolling Interest AccumulatedOtherComprehensiveIncomeLossAttributableToNoncontrollingInterest	2000000	USD
CY2012Q4	wsh	Accumulated Other Comprehensive Income Loss Net Of Tax Attributable To Parent Company AccumulatedOtherComprehensiveIncomeLossNetOfTaxAttributableToParentCompany	-850000000	USD
CY2013Q2	wsh	Accumulated Other Comprehensive Income Loss Net Of Tax Attributable To Parent Company AccumulatedOtherComprehensiveIncomeLossNetOfTaxAttributableToParentCompany	-880000000	USD
CY2010	wsh	Adjustments To Group Shareholding Disposal Of Noncontrolling Interest AdjustmentsToGroupShareholdingDisposalOfNoncontrollingInterest	0	USD
CY2012	wsh	Adjustments To Group Shareholding Disposal Of Noncontrolling Interest AdjustmentsToGroupShareholdingDisposalOfNoncontrollingInterest	3000000	USD
CY2011	wsh	Adjustments To Group Shareholding Disposal Of Noncontrolling Interest AdjustmentsToGroupShareholdingDisposalOfNoncontrollingInterest	0	USD
CY2011	wsh	Allowance For Doubtful Debts Foreign Exchange Differences AllowanceForDoubtfulDebtsForeignExchangeDifferences		USD
CY2010	wsh	Allowance For Doubtful Debts Foreign Exchange Differences AllowanceForDoubtfulDebtsForeignExchangeDifferences		USD
CY2012	wsh	Allowance For Doubtful Debts Foreign Exchange Differences AllowanceForDoubtfulDebtsForeignExchangeDifferences		USD
CY2010	wsh	Amortization And Write Off Of Of Cash Retention Awards AmortizationAndWriteOffOfOfCashRetentionAwards	119000000	USD
CY2012	wsh	Amortization And Write Off Of Of Cash Retention Awards AmortizationAndWriteOffOfOfCashRetentionAwards	416000000	USD
CY2011	wsh	Amortization And Write Off Of Of Cash Retention Awards AmortizationAndWriteOffOfOfCashRetentionAwards	185000000	USD
CY2011	wsh	Amortization Of Cash Retention Awards AmortizationOfCashRetentionAwards	185000000	USD
CY2010	wsh	Amortization Of Cash Retention Awards AmortizationOfCashRetentionAwards	119000000	USD
CY2012	wsh	Amortization Of Cash Retention Awards AmortizationOfCashRetentionAwards	216000000	USD
	wsh	Amortization Of Cash Retention Awards AmortizationOfCashRetentionAwards	116000000	USD
CY2012	wsh	Amount Payable From Option AmountPayableFromOption	19000000	USD
CY2011	wsh	Amount Payable From Option AmountPayableFromOption	72000000	USD
CY2011	wsh	Annual Cash Incentive Payments AnnualCashIncentivePayments	210000000	USD
CY2012	wsh	Annual Cash Incentive Payments AnnualCashIncentivePayments	221000000	USD
CY2010	wsh	Annual Cash Incentive Payments AnnualCashIncentivePayments	196000000	USD
	wsh	Annual Cash Incentive Payments AnnualCashIncentivePayments	279000000	USD
	wsh	Annual Cash Incentive Payments AnnualCashIncentivePayments	300000000	USD
CY2012	wsh	Approximate Tax Benefits To Be Recognized Relating To Release Of Provisions No Longer Required ApproximateTaxBenefitsToBeRecognizedRelatingToReleaseOfProvisionsNoLongerRequired	7000000	USD
CY2012	wsh	Assets Acquired Under Capital Leases AssetsAcquiredUnderCapitalLeases	2000000	USD
CY2010	wsh	Assets Acquired Under Capital Leases AssetsAcquiredUnderCapitalLeases	23000000	USD
CY2011	wsh	Assets Acquired Under Capital Leases AssetsAcquiredUnderCapitalLeases	0	USD
CY2010	wsh	Audit Fees AuditFees	4000000	USD
CY2012	wsh	Audit Fees AuditFees	4000000	USD
CY2011	wsh	Audit Fees AuditFees	4000000	USD
CY2010	wsh	Audit Related Fees AuditRelatedFees	3000000	USD
CY2012	wsh	Audit Related Fees AuditRelatedFees	3000000	USD
CY2011	wsh	Audit Related Fees AuditRelatedFees	3000000	USD
CY2012	wsh	Change In Fiduciary Assets ChangeInFiduciaryAssets	111000000	USD
CY2010	wsh	Change In Fiduciary Assets ChangeInFiduciaryAssets	78000000	USD
CY2011	wsh	Change In Fiduciary Assets ChangeInFiduciaryAssets	162000000	USD
	wsh	Change In Fiduciary Assets ChangeInFiduciaryAssets	1607000000	USD
	wsh	Change In Fiduciary Assets ChangeInFiduciaryAssets	803000000	USD
CY2011	wsh	Change In Fiduciary Liabilities ChangeInFiduciaryLiabilities	-162000000	USD
CY2010	wsh	Change In Fiduciary Liabilities ChangeInFiduciaryLiabilities	-78000000	USD
CY2012	wsh	Change In Fiduciary Liabilities ChangeInFiduciaryLiabilities	-111000000	USD
	wsh	Change In Fiduciary Liabilities ChangeInFiduciaryLiabilities	1607000000	USD
	wsh	Change In Fiduciary Liabilities ChangeInFiduciaryLiabilities	803000000	USD
CY2012	wsh	Commissions And Fees Or Fixed Assets Exceed Ten Percent Of Companys Consolidated Commissions And Fees Conduct Busines Percent CommissionsAndFeesOrFixedAssetsExceedTenPercentOfCompanysConsolidatedCommissionsAndFeesConductBusinesPercent	0.10
CY2012	wsh	Contingent Pension Commitment Exceptional Shareholder Returns ContingentPensionCommitmentExceptionalShareholderReturns	0.10
	wsh	Contingent Pension Commitment Exceptional Shareholder Returns ContingentPensionCommitmentExceptionalShareholderReturns	0.10
CY2012	wsh	Contingent Pension Commitment Profit ContingentPensionCommitmentProfit	0.20
	wsh	Contingent Pension Commitment Profit ContingentPensionCommitmentProfit	0.20
CY2012Q4	wsh	Contractual Obligation Payments ContractualObligationPayments	5040000000	USD
CY2012Q4	wsh	Contractual Obligations Due For Repayment After Five Years ContractualObligationsDueForRepaymentAfterFiveYears	1753000000	USD
CY2012Q4	wsh	Contractual Obligations Due For Repayment In Next Twelve Months ContractualObligationsDueForRepaymentInNextTwelveMonths	440000000	USD
CY2012Q4	wsh	Contractual Obligations Due For Repayment In Years Four And Five ContractualObligationsDueForRepaymentInYearsFourAndFive	1716000000	USD
CY2012Q4	wsh	Contractual Obligations Due For Repayment In Years Two And Three ContractualObligationsDueForRepaymentInYearsTwoAndThree	1131000000	USD
CY2011Q4	wsh	Convertible Bonds Issued By Company ConvertibleBondsIssuedByCompany	85000000	USD
CY2012Q4	wsh	Convertible Bonds Issued By Company ConvertibleBondsIssuedByCompany	96000000	USD
CY2011	wsh	Current Foreign Country One Tax Expense Benefit CurrentForeignCountryOneTaxExpenseBenefit	0	USD
CY2012	wsh	Current Foreign Country One Tax Expense Benefit CurrentForeignCountryOneTaxExpenseBenefit	0	USD
CY2010	wsh	Current Foreign Country One Tax Expense Benefit CurrentForeignCountryOneTaxExpenseBenefit	1000000	USD
CY2012	wsh	Current Other Jurisdictions Tax Expense Benefit CurrentOtherJurisdictionsTaxExpenseBenefit	41000000	USD
CY2011	wsh	Current Other Jurisdictions Tax Expense Benefit CurrentOtherJurisdictionsTaxExpenseBenefit	42000000	USD
CY2010	wsh	Current Other Jurisdictions Tax Expense Benefit CurrentOtherJurisdictionsTaxExpenseBenefit	41000000	USD
	wsh	Current Tax On Ordinary Income CurrentTaxOnOrdinaryIncome	109000000	USD
CY2012Q2	wsh	Current Tax On Ordinary Income CurrentTaxOnOrdinaryIncome	36000000	USD
	wsh	Current Tax On Write Off Of Uncollectible Accounts Receivable Balance CurrentTaxOnWriteOffOfUncollectibleAccountsReceivableBalance	5000000	USD
CY2012	wsh	Debt Instrument Basis Spread On Variable Rate Thereafter DebtInstrumentBasisSpreadOnVariableRateThereafter	0.0185
CY2012Q4	wsh	Debt Instrument Basis Spread On Variable Rate Year One DebtInstrumentBasisSpreadOnVariableRateYearOne	0.017
CY2012Q4	wsh	Debt Instrument Basis Spread On Variable Rate Year Two Thousand Sixteen DebtInstrumentBasisSpreadOnVariableRateYearTwoThousandSixteen	0.015
CY2012	wsh	Deferred Other Jurisdictions Tax Expense Benefit DeferredOtherJurisdictionsTaxExpenseBenefit	-1000000	USD
CY2011	wsh	Deferred Other Jurisdictions Tax Expense Benefit DeferredOtherJurisdictionsTaxExpenseBenefit	2000000	USD
CY2010	wsh	Deferred Other Jurisdictions Tax Expense Benefit DeferredOtherJurisdictionsTaxExpenseBenefit	8000000	USD
CY2011	wsh	Deferred Payments On Acquisitions Of Noncontrolling Interests DeferredPaymentsOnAcquisitionsOfNoncontrollingInterests	0	USD
CY2012	wsh	Deferred Payments On Acquisitions Of Noncontrolling Interests DeferredPaymentsOnAcquisitionsOfNoncontrollingInterests	0	USD
CY2010	wsh	Deferred Payments On Acquisitions Of Noncontrolling Interests DeferredPaymentsOnAcquisitionsOfNoncontrollingInterests	13000000	USD
CY2010	wsh	Deferred Payments On Acquisitions Of Subsidiaries DeferredPaymentsOnAcquisitionsOfSubsidiaries	0	USD
CY2011	wsh	Deferred Payments On Acquisitions Of Subsidiaries DeferredPaymentsOnAcquisitionsOfSubsidiaries	6000000	USD
CY2012	wsh	Deferred Payments On Acquisitions Of Subsidiaries DeferredPaymentsOnAcquisitionsOfSubsidiaries	4000000	USD
CY2012Q4	wsh	Deferred Revenue And Accrued Expenses DeferredRevenueAndAccruedExpenses	541000000	USD
CY2011Q4	wsh	Deferred Revenue And Accrued Expenses DeferredRevenueAndAccruedExpenses	320000000	USD
CY2013Q2	wsh	Deferred Revenue And Accrued Expenses DeferredRevenueAndAccruedExpenses	414000000	USD
CY2012Q4	wsh	Deferred Tax Assets Foreign Capital Losses DeferredTaxAssetsForeignCapitalLosses	42000000	USD
CY2011Q4	wsh	Deferred Tax Assets Foreign Capital Losses DeferredTaxAssetsForeignCapitalLosses	45000000	USD
CY2012Q4	wsh	Deferred Tax Assets Other Net Operating Losses DeferredTaxAssetsOtherNetOperatingLosses	8000000	USD
CY2011Q4	wsh	Deferred Tax Assets Other Net Operating Losses DeferredTaxAssetsOtherNetOperatingLosses	7000000	USD
CY2012Q4	wsh	Deferred Tax Assets Stock Options DeferredTaxAssetsStockOptions	40000000	USD
CY2011Q4	wsh	Deferred Tax Assets Stock Options DeferredTaxAssetsStockOptions	34000000	USD
CY2012Q4	wsh	Deferred Tax Liabilities Cash Retention Award DeferredTaxLiabilitiesCashRetentionAward	2000000	USD
CY2011Q4	wsh	Deferred Tax Liabilities Cash Retention Award DeferredTaxLiabilitiesCashRetentionAward	63000000	USD
CY2012Q4	wsh	Defined Benefit Plan Estimated Employer Contributions Including Exceptional Contributions In Next Fiscal Year DefinedBenefitPlanEstimatedEmployerContributionsIncludingExceptionalContributionsInNextFiscalYear	91000000	USD
CY2012Q1	wsh	Defined Contribution Plan On Going Contribution Percent DefinedContributionPlanOnGoingContributionPercent	0.159
CY2012	wsh	Depreciation On Buildings And Long Leaseholds Calculation Description DepreciationOnBuildingsAndLongLeaseholdsCalculationDescription	calculated over the lesser of 50 years or the lease term.
CY2012	wsh	Depreciation On Buildings And Long Leaseholds Term DepreciationOnBuildingsAndLongLeaseholdsTerm	P50Y
CY2012	wsh	Depreciation On Furniture And Equipment Calculation Description DepreciationOnFurnitureAndEquipmentCalculationDescription	calculated based on a range of 3 to 10 years.
CY2012	wsh	Determination Of Significant Influence On Equity Method Investments DeterminationOfSignificantInfluenceOnEquityMethodInvestments	Company has an equity ownership in the voting stock of the investee between 20 and 50 percent
CY2010	wsh	Dilutive Securities Effect On Basic Earnings Per Share DilutiveSecuritiesEffectOnBasicEarningsPerShare	-0.02
CY2012	wsh	Dilutive Securities Effect On Basic Earnings Per Share DilutiveSecuritiesEffectOnBasicEarningsPerShare	0.00
CY2011	wsh	Dilutive Securities Effect On Basic Earnings Per Share DilutiveSecuritiesEffectOnBasicEarningsPerShare	-0.02
CY2013Q2	wsh	Dilutive Securities Effect On Basic Earnings Per Share DilutiveSecuritiesEffectOnBasicEarningsPerShare	-0.01
CY2012Q2	wsh	Dilutive Securities Effect On Basic Earnings Per Share DilutiveSecuritiesEffectOnBasicEarningsPerShare	-0.01
	wsh	Dilutive Securities Effect On Basic Earnings Per Share DilutiveSecuritiesEffectOnBasicEarningsPerShare	-0.03
	wsh	Dilutive Securities Effect On Basic Earnings Per Share DilutiveSecuritiesEffectOnBasicEarningsPerShare	-0.02
	wsh	Earnings Before Interest Tax Depreciation And Amortization EarningsBeforeInterestTaxDepreciationAndAmortization	900000000	USD
CY2012	wsh	Ebitda Required To Trigger Additional Profit Share Contributions EbitdaRequiredToTriggerAdditionalProfitShareContributions	900000000	USD
CY2011	wsh	Effect Of Exchange Rate Changes On Net Income EffectOfExchangeRateChangesOnNetIncome	0	USD
CY2010	wsh	Effect Of Exchange Rate Changes On Net Income EffectOfExchangeRateChangesOnNetIncome	12000000	USD
CY2012	wsh	Effect Of Exchange Rate Changes On Net Income EffectOfExchangeRateChangesOnNetIncome	0	USD
CY2011	wsh	Effect Of Foreign Exchange Differences EffectOfForeignExchangeDifferences	-1000000	USD
CY2012	wsh	Effect Of Foreign Exchange Differences EffectOfForeignExchangeDifferences	-2000000	USD
CY2010	wsh	Effect Of Foreign Exchange Differences EffectOfForeignExchangeDifferences	-11000000	USD
	wsh	Effective Income Tax Rate On Ordinary Continuing Operations EffectiveIncomeTaxRateOnOrdinaryContinuingOperations	0.25
CY2012Q2	wsh	Effective Income Tax Rate On Ordinary Continuing Operations EffectiveIncomeTaxRateOnOrdinaryContinuingOperations	0.25
	wsh	Effective Tax Rate On Write Off Of Uncollectible Accounts Receivable Balance EffectiveTaxRateOnWriteOffOfUncollectibleAccountsReceivableBalance	0.41
CY2012	wsh	Equity Account For Subsidiaries EquityAccountForSubsidiaries	0	USD
CY2010	wsh	Equity Account For Subsidiaries EquityAccountForSubsidiaries	0	USD
CY2011	wsh	Equity Account For Subsidiaries EquityAccountForSubsidiaries	0	USD
	wsh	Equity Account For Subsidiaries EquityAccountForSubsidiaries	0	USD
	wsh	Equity Account For Subsidiaries EquityAccountForSubsidiaries	0	USD
CY2013Q2	wsh	Equity Account For Subsidiaries EquityAccountForSubsidiaries	0	USD
CY2012Q2	wsh	Equity Account For Subsidiaries EquityAccountForSubsidiaries	0	USD
CY2010	wsh	Equity Method Investment Summarized Financial Information Income Before Income Taxes EquityMethodInvestmentSummarizedFinancialInformationIncomeBeforeIncomeTaxes	61000000	USD
CY2011	wsh	Equity Method Investment Summarized Financial Information Income Before Income Taxes EquityMethodInvestmentSummarizedFinancialInformationIncomeBeforeIncomeTaxes	5000000	USD
CY2012	wsh	Equity Method Investment Summarized Financial Information Income Before Income Taxes EquityMethodInvestmentSummarizedFinancialInformationIncomeBeforeIncomeTaxes	-17000000	USD
CY2012	wsh	Estiamted Future Defined Benefit Plan Employer Contributions Towards Funding Deficit EstiamtedFutureDefinedBenefitPlanEmployerContributionsTowardsFundingDeficit	58000000	USD
CY2012	wsh	Estmated Future Defined Benefit Plan Employer Contributions Based On Pensionable Salaries EstmatedFutureDefinedBenefitPlanEmployerContributionsBasedOnPensionableSalaries	23000000	USD
CY2012	wsh	Exceptional Contributions Arising As Result Of Share Buyback Program ExceptionalContributionsArisingAsResultOfShareBuybackProgram	10000000	USD
CY2012Q4	wsh	Fiduciary Assets FiduciaryAssets	9271000000	USD
CY2011Q4	wsh	Fiduciary Assets FiduciaryAssets	9338000000	USD
CY2013Q2	wsh	Fiduciary Assets FiduciaryAssets	9910000000	USD
CY2012Q4	wsh	Fiduciary Liabilities FiduciaryLiabilities	9271000000	USD
CY2011Q4	wsh	Fiduciary Liabilities FiduciaryLiabilities	9338000000	USD
CY2013Q2	wsh	Fiduciary Liabilities FiduciaryLiabilities	9910000000	USD
CY2012	wsh	Foreign Currency Translation Adjustment On Litigation Reserves ForeignCurrencyTranslationAdjustmentOnLitigationReserves	4000000	USD
CY2011	wsh	Foreign Currency Translation Adjustment On Litigation Reserves ForeignCurrencyTranslationAdjustmentOnLitigationReserves	-1000000	USD
CY2012	wsh	Foreign Earnings ForeignEarnings	3000000	USD
CY2011	wsh	Foreign Earnings ForeignEarnings	-6000000	USD
CY2010	wsh	Foreign Earnings ForeignEarnings	13000000	USD
CY2011Q4	wsh	Guarantee To Banker And Other Third Party GuaranteeToBankerAndOtherThirdParty	7000000	USD
CY2012Q4	wsh	Guarantee To Banker And Other Third Party GuaranteeToBankerAndOtherThirdParty	10000000	USD
CY2011	wsh	Income Loss From Continuing Operations Before Interest In Earnings Of Associates IncomeLossFromContinuingOperationsBeforeInterestInEarningsOfAssociates	207000000	USD
CY2012	wsh	Income Loss From Continuing Operations Before Interest In Earnings Of Associates IncomeLossFromContinuingOperationsBeforeInterestInEarningsOfAssociates	-438000000	USD
CY2010	wsh	Income Loss From Continuing Operations Before Interest In Earnings Of Associates IncomeLossFromContinuingOperationsBeforeInterestInEarningsOfAssociates	447000000	USD
CY2012Q2	wsh	Income Loss From Continuing Operations Before Interest In Earnings Of Associates IncomeLossFromContinuingOperationsBeforeInterestInEarningsOfAssociates	110000000	USD
	wsh	Income Loss From Continuing Operations Before Interest In Earnings Of Associates IncomeLossFromContinuingOperationsBeforeInterestInEarningsOfAssociates	318000000	USD
	wsh	Income Loss From Continuing Operations Before Interest In Earnings Of Associates IncomeLossFromContinuingOperationsBeforeInterestInEarningsOfAssociates	327000000	USD
CY2013Q2	wsh	Income Loss From Continuing Operations Before Interest In Earnings Of Associates IncomeLossFromContinuingOperationsBeforeInterestInEarningsOfAssociates	110000000	USD
CY2010	wsh	Increase Decrease In Cash And Cash Equivalents From Operating And Investing Activities IncreaseDecreaseInCashAndCashEquivalentsFromOperatingAndInvestingActivities	395000000	USD
CY2011	wsh	Increase Decrease In Cash And Cash Equivalents From Operating And Investing Activities IncreaseDecreaseInCashAndCashEquivalentsFromOperatingAndInvestingActivities	338000000	USD
CY2012	wsh	Increase Decrease In Cash And Cash Equivalents From Operating And Investing Activities IncreaseDecreaseInCashAndCashEquivalentsFromOperatingAndInvestingActivities	353000000	USD
	wsh	Increase Decrease In Cash And Cash Equivalents From Operating And Investing Activities IncreaseDecreaseInCashAndCashEquivalentsFromOperatingAndInvestingActivities	92000000	USD
	wsh	Increase Decrease In Cash And Cash Equivalents From Operating And Investing Activities IncreaseDecreaseInCashAndCashEquivalentsFromOperatingAndInvestingActivities	62000000	USD
CY2012	wsh	Increase Decrease In Provisions IncreaseDecreaseInProvisions	-20000000	USD
CY2011	wsh	Increase Decrease In Provisions IncreaseDecreaseInProvisions	16000000	USD
CY2010	wsh	Increase Decrease In Provisions IncreaseDecreaseInProvisions	-45000000	USD
	wsh	Increase Decrease In Provisions IncreaseDecreaseInProvisions	-15000000	USD
	wsh	Increase Decrease In Provisions IncreaseDecreaseInProvisions	27000000	USD
CY2012	wsh	Increase In Group Shareholding As Result Of Acquisition Of Portion Of Noncontrolling Interest Shareholding IncreaseInGroupShareholdingAsResultOfAcquisitionOfPortionOfNoncontrollingInterestShareholding	-39000000	USD
CY2010	wsh	Increase In Group Shareholding As Result Of Acquisition Of Portion Of Noncontrolling Interest Shareholding IncreaseInGroupShareholdingAsResultOfAcquisitionOfPortionOfNoncontrollingInterestShareholding	-5000000	USD
CY2011	wsh	Increase In Group Shareholding As Result Of Acquisition Of Portion Of Noncontrolling Interest Shareholding IncreaseInGroupShareholdingAsResultOfAcquisitionOfPortionOfNoncontrollingInterestShareholding	0	USD
CY2009Q4	wsh	Increased Companys Interest IncreasedCompanysInterest	0.90
CY2012Q4	wsh	Interest Bearing Vendor Loans By Company InterestBearingVendorLoansByCompany	47000000	USD
CY2011Q4	wsh	Interest Bearing Vendor Loans By Company InterestBearingVendorLoansByCompany	43000000	USD
CY2010	wsh	Interest Increased By Series Of Incremental Investments InterestIncreasedBySeriesOfIncrementalInvestments	0.49
CY2011	wsh	Investment Income InvestmentIncome	31000000	USD
CY2012	wsh	Investment Income InvestmentIncome	18000000	USD
CY2010	wsh	Investment Income InvestmentIncome	38000000	USD
	wsh	Investment Income InvestmentIncome	7000000	USD
	wsh	Investment Income InvestmentIncome	10000000	USD
CY2012Q2	wsh	Investment Income InvestmentIncome	5000000	USD
CY2013Q2	wsh	Investment Income InvestmentIncome	3000000	USD
CY2012	wsh	Joint Venture Settlement JointVentureSettlement	11000000	USD
CY2011	wsh	Joint Venture Settlement JointVentureSettlement	0	USD
CY2010	wsh	Joint Venture Settlement JointVentureSettlement	0	USD
CY2011	wsh	Make Whole On Repurchase And Redemption Of Senior Notes MakeWholeOnRepurchaseAndRedemptionOfSeniorNotes	158000000	USD
CY2010	wsh	Make Whole On Repurchase And Redemption Of Senior Notes MakeWholeOnRepurchaseAndRedemptionOfSeniorNotes	0	USD
CY2012	wsh	Make Whole On Repurchase And Redemption Of Senior Notes MakeWholeOnRepurchaseAndRedemptionOfSeniorNotes	0	USD
CY2010	wsh	Make Whole On Repurchase And Redemption Of Senior Notes And Write Off Of Unamortized Debt Issuance Costs MakeWholeOnRepurchaseAndRedemptionOfSeniorNotesAndWriteOffOfUnamortizedDebtIssuanceCosts	0	USD
CY2012	wsh	Make Whole On Repurchase And Redemption Of Senior Notes And Write Off Of Unamortized Debt Issuance Costs MakeWholeOnRepurchaseAndRedemptionOfSeniorNotesAndWriteOffOfUnamortizedDebtIssuanceCosts	0	USD
CY2011	wsh	Make Whole On Repurchase And Redemption Of Senior Notes And Write Off Of Unamortized Debt Issuance Costs MakeWholeOnRepurchaseAndRedemptionOfSeniorNotesAndWriteOffOfUnamortizedDebtIssuanceCosts	171000000	USD
CY2012	wsh	Maximum Contributions Payable MaximumContributionsPayable	507000000	USD
CY2012	wsh	Maximum Contributions Payable MaximumContributionsPayable	312000000	GBP
	wsh	Maximum Contributions Payable MaximumContributionsPayable	473000000	USD
	wsh	Maximum Contributions Payable MaximumContributionsPayable	312000000	GBP
CY2011	wsh	Movement In Provision For Non Current Taxes MovementInProvisionForNonCurrentTaxes	-3000000	USD
CY2010	wsh	Movement In Provision For Non Current Taxes MovementInProvisionForNonCurrentTaxes	3000000	USD
CY2012	wsh	Movement In Provision For Non Current Taxes MovementInProvisionForNonCurrentTaxes	-6000000	USD
CY2011	wsh	Net Assets Liabilities Acquired Net Of Cash Acquired NetAssetsLiabilitiesAcquiredNetOfCashAcquired	0	USD
CY2010	wsh	Net Assets Liabilities Acquired Net Of Cash Acquired NetAssetsLiabilitiesAcquiredNetOfCashAcquired	-6000000	USD
CY2012	wsh	Net Assets Liabilities Acquired Net Of Cash Acquired NetAssetsLiabilitiesAcquiredNetOfCashAcquired	20000000	USD
	wsh	Net Assets Liabilities Acquired Net Of Cash Acquired NetAssetsLiabilitiesAcquiredNetOfCashAcquired	0	USD
	wsh	Net Assets Liabilities Acquired Net Of Cash Acquired NetAssetsLiabilitiesAcquiredNetOfCashAcquired	16000000	USD
CY2012	wsh	Net Auditors Remuneration NetAuditorsRemuneration	8000000	USD
CY2010	wsh	Net Auditors Remuneration NetAuditorsRemuneration	8000000	USD
CY2011	wsh	Net Auditors Remuneration NetAuditorsRemuneration	8000000	USD
CY2012	wsh	Net Gain Loss On Disposal Of Operations NetGainLossOnDisposalOfOperations	-3000000	USD
CY2011	wsh	Net Gain Loss On Disposal Of Operations NetGainLossOnDisposalOfOperations	4000000	USD
CY2010	wsh	Net Gain Loss On Disposal Of Operations NetGainLossOnDisposalOfOperations	-2000000	USD
	wsh	Net Gain Loss On Disposal Of Operations NetGainLossOnDisposalOfOperations	0	USD
	wsh	Net Gain Loss On Disposal Of Operations NetGainLossOnDisposalOfOperations	0	USD
CY2013Q2	wsh	Net Gain Loss On Disposal Of Operations NetGainLossOnDisposalOfOperations	0	USD
CY2012Q2	wsh	Net Gain Loss On Disposal Of Operations NetGainLossOnDisposalOfOperations	0	USD
CY2012	wsh	Net Loss Relating To Termination Of Joint Venture NetLossRelatingToTerminationOfJointVenture	1000000	USD
CY2011	wsh	No Of Customer Represented More Than Ten Number Of Customer Represented More Than Ten Percents Of Companys Consolidated Commission And Fees NoOfCustomerRepresentedMoreThanTenNumberOfCustomerRepresentedMoreThanTenPercentsOfCompanysConsolidatedCommissionAndFees	0
CY2010	wsh	No Of Customer Represented More Than Ten Number Of Customer Represented More Than Ten Percents Of Companys Consolidated Commission And Fees NoOfCustomerRepresentedMoreThanTenNumberOfCustomerRepresentedMoreThanTenPercentsOfCompanysConsolidatedCommissionAndFees	0
CY2012	wsh	No Of Customer Represented More Than Ten Number Of Customer Represented More Than Ten Percents Of Companys Consolidated Commission And Fees NoOfCustomerRepresentedMoreThanTenNumberOfCustomerRepresentedMoreThanTenPercentsOfCompanysConsolidatedCommissionAndFees	0
CY2010	wsh	Non Current Federal Tax Expense Benefit NonCurrentFederalTaxExpenseBenefit	-3000000	USD
CY2012	wsh	Non Current Federal Tax Expense Benefit NonCurrentFederalTaxExpenseBenefit	3000000	USD
CY2011	wsh	Non Current Federal Tax Expense Benefit NonCurrentFederalTaxExpenseBenefit	5000000	USD
CY2010	wsh	Non Current Foreign Income Tax Expense Benefit NonCurrentForeignIncomeTaxExpenseBenefit	0	USD
CY2011	wsh	Non Current Foreign Income Tax Expense Benefit NonCurrentForeignIncomeTaxExpenseBenefit	-4000000	USD
CY2012	wsh	Non Current Foreign Income Tax Expense Benefit NonCurrentForeignIncomeTaxExpenseBenefit	4000000	USD
CY2011	wsh	Non Current Income Tax Expense Benefit NonCurrentIncomeTaxExpenseBenefit	5000000	USD
CY2010	wsh	Non Current Income Tax Expense Benefit NonCurrentIncomeTaxExpenseBenefit	-3000000	USD
CY2012	wsh	Non Current Income Tax Expense Benefit NonCurrentIncomeTaxExpenseBenefit	7000000	USD
CY2010	wsh	Non Current Other Jurisdictions Tax Expense Benefit NonCurrentOtherJurisdictionsTaxExpenseBenefit	3000000	USD
CY2011	wsh	Non Current Other Jurisdictions Tax Expense Benefit NonCurrentOtherJurisdictionsTaxExpenseBenefit	4000000	USD
CY2012	wsh	Non Current Other Jurisdictions Tax Expense Benefit NonCurrentOtherJurisdictionsTaxExpenseBenefit	0	USD
CY2010	wsh	Non Current State And Local Tax Expense Benefit NonCurrentStateAndLocalTaxExpenseBenefit	-3000000	USD
CY2011	wsh	Non Current State And Local Tax Expense Benefit NonCurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2012	wsh	Non Current State And Local Tax Expense Benefit NonCurrentStateAndLocalTaxExpenseBenefit	0	USD
CY2012	wsh	Non Deductible Foreign Exchange Loss NonDeductibleForeignExchangeLoss	0	USD
CY2010	wsh	Non Deductible Foreign Exchange Loss NonDeductibleForeignExchangeLoss	4000000	USD
CY2011	wsh	Non Deductible Foreign Exchange Loss NonDeductibleForeignExchangeLoss	0	USD
CY2010	wsh	Non Taxable Profit On Disposal Of Discontinued Operations NonTaxableProfitOnDisposalOfDiscontinuedOperations	-1000000	USD
CY2011	wsh	Non Taxable Profit On Disposal Of Discontinued Operations NonTaxableProfitOnDisposalOfDiscontinuedOperations	0	USD
CY2012	wsh	Non Taxable Profit On Disposal Of Discontinued Operations NonTaxableProfitOnDisposalOfDiscontinuedOperations	0	USD
	wsh	Noncash Movement On Derivative Instruments NoncashMovementOnDerivativeInstruments	-1000000	USD
	wsh	Noncash Movement On Derivative Instruments NoncashMovementOnDerivativeInstruments	5000000	USD
CY2011	wsh	Number Of Country Represented More Than Ten Percent Of Companys Consolidated Commission And Fees Or Fixed Assets NumberOfCountryRepresentedMoreThanTenPercentOfCompanysConsolidatedCommissionAndFeesOrFixedAssets	2	Country
CY2012	wsh	Number Of Country Represented More Than Ten Percent Of Companys Consolidated Commission And Fees Or Fixed Assets NumberOfCountryRepresentedMoreThanTenPercentOfCompanysConsolidatedCommissionAndFeesOrFixedAssets	2	Country
CY2012Q4	wsh	Operating Lease Obligation OperatingLeaseObligation	829000000	USD
CY2011Q4	wsh	Operating Lease Obligation OperatingLeaseObligation	828000000	USD
CY2011	wsh	Operational Review Average Number Of Positions Eliminated OperationalReviewAverageNumberOfPositionsEliminated	1200	Position
CY2011	wsh	Operational Review Severance Costs OperationalReviewSeveranceCosts	89000000	USD
CY2012Q2	wsh	Ordinary Income Before Tax OrdinaryIncomeBeforeTax	146000000	USD
	wsh	Ordinary Income Before Tax OrdinaryIncomeBeforeTax	443000000	USD
	wsh	Other Comprehensive Income Loss Before Reclassification Adjustments Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationAdjustmentsNetOfTax	47000000	USD
CY2011	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsBeforeTax	-8000000	USD
CY2010	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsBeforeTax	-26000000	USD
CY2012	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsBeforeTax	31000000	USD
CY2013Q2	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsBeforeTax	-1000000	USD
CY2012Q2	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsBeforeTax	-13000000	USD
	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Before Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsBeforeTax	-54000000	USD
CY2011	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsNetOfTax	-8000000	USD
CY2012	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsNetOfTax	22000000	USD
CY2010	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsNetOfTax	-17000000	USD
CY2013Q2	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsNetOfTax	1000000	USD
CY2012Q2	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsNetOfTax	-9000000	USD
	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsNetOfTax	6000000	USD
	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsNetOfTax	-39000000	USD
CY2010	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsTax	9000000	USD
CY2011	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsTax	0	USD
CY2012	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsTax	-9000000	USD
CY2012Q2	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsTax	4000000	USD
CY2013Q2	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsTax	2000000	USD
	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsTax	-2000000	USD
	wsh	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Foreign Currency Translation On Pension Funding Adjustments Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansForeignCurrencyTranslationOnPensionFundingAdjustmentsTax	15000000	USD
CY2012	wsh	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-9000000	USD
CY2010	wsh	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-11000000	USD
CY2011	wsh	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-9000000	USD
CY2013Q2	wsh	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-2000000	USD
CY2012Q2	wsh	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-4000000	USD
	wsh	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-7000000	USD
	wsh	Other Comprehensive Income Loss Reclassification Adjustment From Aoci Pension And Other Postretirement Benefit Plans For Net Gain Loss Tax OtherComprehensiveIncomeLossReclassificationAdjustmentFromAociPensionAndOtherPostretirementBenefitPlansForNetGainLossTax	-5000000	USD
	wsh	Other Comprehensive Income Loss Reclassification Adjustment On Foreign Currency Transaction And Translation Gain Loss Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnForeignCurrencyTransactionAndTranslationGainLossIncludedInNetIncomeNetOfTax	0	USD
	wsh	Other Comprehensive Income Loss Reclassification Adjustment On Pensions Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnPensionsIncludedInNetIncomeNetOfTax	20000000	USD
	wsh	Other Comprehensive Income Loss Reclassification Adjustment On Pensions Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnPensionsIncludedInNetIncomeNetOfTax	15000000	USD
CY2013Q2	wsh	Other Comprehensive Income Loss Reclassification Adjustment On Pensions Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnPensionsIncludedInNetIncomeNetOfTax	11000000	USD
CY2012Q2	wsh	Other Comprehensive Income Loss Reclassification Adjustment On Pensions Included In Net Income Net Of Tax OtherComprehensiveIncomeLossReclassificationAdjustmentOnPensionsIncludedInNetIncomeNetOfTax	7000000	USD
	wsh	Other Comprehensive Income Loss Total Reclassification Adjustment On In Net Income Net Of Tax OtherComprehensiveIncomeLossTotalReclassificationAdjustmentOnInNetIncomeNetOfTax	17000000	USD
	wsh	Other Comprehensive Income Loss Total Reclassification Adjustment On In Net Income Net Of Tax OtherComprehensiveIncomeLossTotalReclassificationAdjustmentOnInNetIncomeNetOfTax	13000000	USD
CY2013Q2	wsh	Other Comprehensive Income Loss Total Reclassification Adjustment On In Net Income Net Of Tax OtherComprehensiveIncomeLossTotalReclassificationAdjustmentOnInNetIncomeNetOfTax	10000000	USD
CY2012Q2	wsh	Other Comprehensive Income Loss Total Reclassification Adjustment On In Net Income Net Of Tax OtherComprehensiveIncomeLossTotalReclassificationAdjustmentOnInNetIncomeNetOfTax	1000000	USD
CY2011	wsh	Other Jurisdictions And Domestic State Taxes OtherJurisdictionsAndDomesticStateTaxes	35000000	USD
CY2010	wsh	Other Jurisdictions And Domestic State Taxes OtherJurisdictionsAndDomesticStateTaxes	20000000	USD
CY2012	wsh	Other Jurisdictions And Domestic State Taxes OtherJurisdictionsAndDomesticStateTaxes	24000000	USD
CY2012Q4	wsh	Other Receivable Non Current OtherReceivableNonCurrent	54000000	USD
CY2011Q4	wsh	Other Receivable Non Current OtherReceivableNonCurrent	20000000	USD
CY2013Q2	wsh	Other Receivable Non Current OtherReceivableNonCurrent	59000000	USD
CY2011Q4	wsh	Other Receivables Current OtherReceivablesCurrent	47000000	USD
CY2012Q4	wsh	Other Receivables Current OtherReceivablesCurrent	46000000	USD
CY2013Q2	wsh	Other Receivables Current OtherReceivablesCurrent	71000000	USD
CY2012	wsh	Provisions For Liabilities Utilized ProvisionsForLiabilitiesUtilized	41000000	USD
CY2011	wsh	Provisions For Liabilities Utilized ProvisionsForLiabilitiesUtilized	38000000	USD
CY2012	wsh	Recognition Of Tax Benefit Probability Description RecognitionOfTaxBenefitProbabilityDescription	greater than 50 percent likely to be realized on settlement with the tax authority, assuming full knowledge of the position and all relevant facts.
CY2011	wsh	Other Services Provided By Group Auditors OtherServicesProvidedByGroupAuditors	1000000	USD
CY2012	wsh	Other Services Provided By Group Auditors OtherServicesProvidedByGroupAuditors	1000000	USD
CY2010	wsh	Other Services Provided By Group Auditors OtherServicesProvidedByGroupAuditors	1000000	USD
CY2012Q4	wsh	Outstanding Performance Based Stock Options OutstandingPerformanceBasedStockOptions	6500000	shares
CY2011Q4	wsh	Outstanding Performance Based Stock Options OutstandingPerformanceBasedStockOptions	7300000	shares
CY2010Q4	wsh	Outstanding Performance Based Stock Options OutstandingPerformanceBasedStockOptions	9400000	shares
CY2012Q2	wsh	Outstanding Performance Based Stock Options OutstandingPerformanceBasedStockOptions	6900000	shares
CY2013Q2	wsh	Outstanding Performance Based Stock Options OutstandingPerformanceBasedStockOptions	6000000	shares
CY2011Q4	wsh	Outstanding Time Based Stock Options OutstandingTimeBasedStockOptions	9200000	shares
CY2010Q4	wsh	Outstanding Time Based Stock Options OutstandingTimeBasedStockOptions	11500000	shares
CY2012Q4	wsh	Outstanding Time Based Stock Options OutstandingTimeBasedStockOptions	10200000	shares
CY2012Q2	wsh	Outstanding Time Based Stock Options OutstandingTimeBasedStockOptions	8700000	shares
CY2013Q2	wsh	Outstanding Time Based Stock Options OutstandingTimeBasedStockOptions	8800000	shares
	wsh	Pension Total Reclassification From Other Comprehensive Income Loss Into Net Income PensionTotalReclassificationFromOtherComprehensiveIncomeLossIntoNetIncome	21000000	USD
	wsh	Pension Total Reclassification From Other Comprehensive Income Loss Into Net Income PensionTotalReclassificationFromOtherComprehensiveIncomeLossIntoNetIncome	24000000	USD
CY2013Q2	wsh	Pension Total Reclassification From Other Comprehensive Income Loss Into Net Income PensionTotalReclassificationFromOtherComprehensiveIncomeLossIntoNetIncome	12000000	USD
CY2012Q2	wsh	Pension Total Reclassification From Other Comprehensive Income Loss Into Net Income PensionTotalReclassificationFromOtherComprehensiveIncomeLossIntoNetIncome	10000000	USD
CY2009Q4	wsh	Percent Of Capital To Be Purchases With Call Option PercentOfCapitalToBePurchasesWithCallOption	1
CY2012	wsh	Percentage Of Ownership In Wholly On Subsidiary By Parent PercentageOfOwnershipInWhollyOnSubsidiaryByParent	1
CY2012Q4	wsh	Prepaid Expense Other Assets And Unbilled Receivables Current PrepaidExpenseOtherAssetsAndUnbilledReceivablesCurrent	61000000	USD
CY2011Q4	wsh	Prepaid Expense Other Assets And Unbilled Receivables Current PrepaidExpenseOtherAssetsAndUnbilledReceivablesCurrent	45000000	USD
CY2013Q2	wsh	Prepaid Expense Other Assets And Unbilled Receivables Current PrepaidExpenseOtherAssetsAndUnbilledReceivablesCurrent	75000000	USD
CY2012Q4	wsh	Prepaid Expense Other Assets And Unbilled Receivables Non Current PrepaidExpenseOtherAssetsAndUnbilledReceivablesNonCurrent	24000000	USD
CY2013Q2	wsh	Prepaid Expense Other Assets And Unbilled Receivables Non Current PrepaidExpenseOtherAssetsAndUnbilledReceivablesNonCurrent	21000000	USD
CY2013Q3	wsh	Principalamountofspecificnotestenderedandacceptedforpurchase Principalamountofspecificnotestenderedandacceptedforpurchase	525000000	USD
CY2013Q2	wsh	Principalamountofspecificnotestenderedandacceptedforpurchase Principalamountofspecificnotestenderedandacceptedforpurchase	500000000	USD
CY2011	wsh	Proceeds From Issue Of Long Term Debt ProceedsFromIssueOfLongTermDebt	300000000	USD
CY2010	wsh	Proceeds From Issue Of Long Term Debt ProceedsFromIssueOfLongTermDebt	0	USD
CY2012	wsh	Proceeds From Issue Of Long Term Debt ProceedsFromIssueOfLongTermDebt	0	USD
CY2012	wsh	Proceeds From Sale Of Continuing Operations Net Of Cash Disposed ProceedsFromSaleOfContinuingOperationsNetOfCashDisposed	0	USD
CY2011	wsh	Proceeds From Sale Of Continuing Operations Net Of Cash Disposed ProceedsFromSaleOfContinuingOperationsNetOfCashDisposed	0	USD
CY2010	wsh	Proceeds From Sale Of Continuing Operations Net Of Cash Disposed ProceedsFromSaleOfContinuingOperationsNetOfCashDisposed	2000000	USD
CY2011	wsh	Property Plant And Equipment Foreign Exchange PropertyPlantAndEquipmentForeignExchange	-7000000	USD
CY2012	wsh	Property Plant And Equipment Foreign Exchange PropertyPlantAndEquipmentForeignExchange	17000000	USD
CY2012	wsh	Provisions For Liabilities Made Net ProvisionsForLiabilitiesMadeNet	21000000	USD
CY2011	wsh	Provisions For Liabilities Made Net ProvisionsForLiabilitiesMadeNet	56000000	USD
	wsh	Repurchased Shares Average Price RepurchasedSharesAveragePrice	35.31
CY2012Q4	wsh	Restricted Stock Units Outstanding RestrictedStockUnitsOutstanding	2500000	shares
CY2010Q4	wsh	Restricted Stock Units Outstanding RestrictedStockUnitsOutstanding	1800000	shares
CY2011Q4	wsh	Restricted Stock Units Outstanding RestrictedStockUnitsOutstanding	1200000	shares
CY2012Q2	wsh	Restricted Stock Units Outstanding RestrictedStockUnitsOutstanding	1200000	shares
CY2013Q2	wsh	Restricted Stock Units Outstanding RestrictedStockUnitsOutstanding	2400000	shares
CY2012	wsh	Reduction Of Interest In Company ReductionOfInterestInCompany	49 percent to 31 percent
CY2010	wsh	Reduction Of Interest In Company ReductionOfInterestInCompany	49 percent to 31 percent
CY2011	wsh	Related Party Transaction Amount Received From Paid To Related Party RelatedPartyTransactionAmountReceivedFromPaidToRelatedParty	0	USD
CY2010	wsh	Related Party Transaction Amount Received From Paid To Related Party RelatedPartyTransactionAmountReceivedFromPaidToRelatedParty	0	USD
CY2012	wsh	Related Party Transaction Amount Received From Paid To Related Party RelatedPartyTransactionAmountReceivedFromPaidToRelatedParty	0	USD
	wsh	Related Party Transaction Amount Received From Paid To Related Party RelatedPartyTransactionAmountReceivedFromPaidToRelatedParty	0	USD
	wsh	Related Party Transaction Amount Received From Paid To Related Party RelatedPartyTransactionAmountReceivedFromPaidToRelatedParty	0	USD
CY2011	wsh	Release Of Funds Related To Potential Legal Liabilities ReleaseOfFundsRelatedToPotentialLegalLiabilities	12000000	USD
CY2010	wsh	Release Of Funds Related To Potential Legal Liabilities ReleaseOfFundsRelatedToPotentialLegalLiabilities	7000000	USD
CY2012	wsh	Release Of Funds Related To Potential Legal Liabilities ReleaseOfFundsRelatedToPotentialLegalLiabilities	7000000	USD
CY2012	wsh	Retail Insurance Services RetailInsuranceServices	2334000000	USD
CY2010	wsh	Retail Insurance Services RetailInsuranceServices	2306000000	USD
CY2011	wsh	Retail Insurance Services RetailInsuranceServices	2341000000	USD
CY2010	wsh	Valuation Allowance Deferred Tax Asset Foreign Exchange Differences ValuationAllowanceDeferredTaxAssetForeignExchangeDifferences	-1000000	USD
CY2011	wsh	Valuation Allowance Deferred Tax Asset Foreign Exchange Differences ValuationAllowanceDeferredTaxAssetForeignExchangeDifferences	0	USD
CY2009Q4	wsh	Voting Rights Of Shareholder On Its Board VotingRightsOfShareholderOnItsBoard	0.33
CY2012Q4	wsh	Unrecognised Tax Benefits Net Liability UnrecognisedTaxBenefitsNetLiability	34000000	USD
CY2012Q4	wsh	Write Off Of Unamortized Cash Retention Award WriteOffOfUnamortizedCashRetentionAward	200000000	USD
CY2011	wsh	Write Off Of Unamortized Cash Retention Awards WriteOffOfUnamortizedCashRetentionAwards	0	USD
CY2012Q4	wsh	Unamortized Debt Issuance Expense Current UnamortizedDebtIssuanceExpenseCurrent	3000000	USD
CY2011Q4	wsh	Unamortized Debt Issuance Expense Current UnamortizedDebtIssuanceExpenseCurrent	3000000	USD
CY2013Q2	wsh	Unamortized Debt Issuance Expense Current UnamortizedDebtIssuanceExpenseCurrent	3000000	USD
CY2012	wsh	Share Buy Back Program Contribution Percent ShareBuyBackProgramContributionPercent	0.10
CY2012	wsh	Social Security Costs SocialSecurityCosts	133000000	USD
CY2010	wsh	Social Security Costs SocialSecurityCosts	119000000	USD
CY2011	wsh	Social Security Costs SocialSecurityCosts	130000000	USD
CY2012	wsh	Specialty Insurance Services SpecialtyInsuranceServices	1124000000	USD
CY2010	wsh	Specialty Insurance Services SpecialtyInsuranceServices	987000000	USD
CY2011	wsh	Specialty Insurance Services SpecialtyInsuranceServices	1073000000	USD
CY2012	wsh	Tax Benefit Arising On Exercise Of Fully Vested Stock Options TaxBenefitArisingOnExerciseOfFullyVestedStockOptions	0	USD
CY2011	wsh	Tax Benefit Arising On Exercise Of Fully Vested Stock Options TaxBenefitArisingOnExerciseOfFullyVestedStockOptions	1000000	USD
CY2012	wsh	Threshold For Amortization Of Gain Loss On Defined Benefit Plan ThresholdForAmortizationOfGainLossOnDefinedBenefitPlan	If such gains or losses exceed ten percent of the greater of plan assets or plan liabilities
CY2012	wsh	Threshold For Amortization Of Gain Loss On Defined Benefit Plan Percent ThresholdForAmortizationOfGainLossOnDefinedBenefitPlanPercent	0.10
CY2011	wsh	Total Depreciation Including Element Held In Salaries And Benefits TotalDepreciationIncludingElementHeldInSalariesAndBenefits	76000000	USD
CY2010Q4	wsh	Unamortized Cash Retention Awards UnamortizedCashRetentionAwards	173000000	USD
CY2012Q4	wsh	Unamortized Cash Retention Awards UnamortizedCashRetentionAwards	9000000	USD
CY2011Q4	wsh	Unamortized Cash Retention Awards UnamortizedCashRetentionAwards	196000000	USD
CY2012Q4	wsh	Unamortized Cash Retention Awards Current UnamortizedCashRetentionAwardsCurrent	7000000	USD
CY2011Q4	wsh	Unamortized Cash Retention Awards Current UnamortizedCashRetentionAwardsCurrent	120000000	USD
CY2012Q4	wsh	Unamortized Cash Retention Awards Non Current UnamortizedCashRetentionAwardsNonCurrent	2000000	USD
CY2011Q4	wsh	Unamortized Cash Retention Awards Non Current UnamortizedCashRetentionAwardsNonCurrent	76000000	USD
CY2011	wsh	Valuation Allowance Deferred Tax Asset Additions Releases ValuationAllowanceDeferredTaxAssetAdditionsReleases	0	USD
CY2012	wsh	Valuation Allowance Deferred Tax Asset Additions Releases ValuationAllowanceDeferredTaxAssetAdditionsReleases	110000000	USD
CY2010	wsh	Valuation Allowance Deferred Tax Asset Additions Releases ValuationAllowanceDeferredTaxAssetAdditionsReleases	0	USD
CY2012	wsh	Valuation Allowance Deferred Tax Asset Foreign Exchange Differences ValuationAllowanceDeferredTaxAssetForeignExchangeDifferences	-3000000	USD
CY2011	wsh	Unrecognized Tax Benefits Other Movements UnrecognizedTaxBenefitsOtherMovements	3000000	USD
CY2012	wsh	Unrecognized Tax Benefits Other Movements UnrecognizedTaxBenefitsOtherMovements	0	USD
CY2010	wsh	Unrecognized Tax Benefits Other Movements UnrecognizedTaxBenefitsOtherMovements	3000000	USD
CY2012	wsh	Usd Value Of Shares Repurchased In Period UsdValueOfSharesRepurchasedInPeriod	100000000	USD
CY2010	wsh	Write Off Of Unamortized Cash Retention Awards WriteOffOfUnamortizedCashRetentionAwards	0	USD
CY2012	wsh	Write Off Of Unamortized Cash Retention Awards WriteOffOfUnamortizedCashRetentionAwards	-200000000	USD
	wsh	Write Off Of Uncollectible Accounts Receivable Balance WriteOffOfUncollectibleAccountsReceivableBalance	-12000000	USD
CY2011	wsh	Write Off Of Uncollectible Trade Receivable Balance WriteOffOfUncollectibleTradeReceivableBalance	-22000000	USD
CY2012	wsh	Write Off Of Uncollectible Trade Receivable Balance WriteOffOfUncollectibleTradeReceivableBalance	-28000000	USD
CY2013Q3	dei	Amendment Flag AmendmentFlag	false
CY2013Q3	dei	Document Period End Date DocumentPeriodEndDate	2013-08-08
CY2013Q3	dei	Document Type DocumentType	8-K
CY2013Q3	dei	Entity Central Index Key EntityCentralIndexKey	0001140536
CY2010Q4	dei	Entity Number Of Employees EntityNumberOfEmployees	17101	Person
CY2012Q4	dei	Entity Number Of Employees EntityNumberOfEmployees	17470	Person
CY2011Q4	dei	Entity Number Of Employees EntityNumberOfEmployees	17155	Person
CY2013Q3	dei	Entity Registrant Name EntityRegistrantName	WILLIS GROUP HOLDINGS PLC

Files In Submission

Name	View Source	Status
0001140536-13-000011-index-headers.html	Edgar Link	pending
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0001140536-13-000011.txt	Edgar Link	pending
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exhibit231deloitteconsent.htm	Edgar Link	pending
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2013 Q2 Form 8-K Financial Statement

#000114053613000011 Filed on August 08, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$WTW WILLIS TOWERS WATSON PLC Stock $wtw

2013 Q2 Form 8-K Financial Statement

#000114053613000011 Filed on August 08, 2013

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$WTW
WILLIS TOWERS WATSON PLC Stock $wtw