$unm 2011 Q4 10-Q

Concept	2011 Q4	2011 Q3	2010 Q3
Revenue	$2.605B	$2.546B	$2.528B
YoY Change	0.45%	0.7%	-0.83%
Cost Of Revenue		$1.636B	$1.588B
YoY Change		3.03%
Gross Profit		$910.0M	$940.4M
YoY Change		-3.23%
Gross Profit Margin		35.75%	37.2%
Selling, General & Admin	$209.1M	$198.3M	$194.1M
YoY Change	8.06%	2.16%	-3.43%
% of Gross Profit		21.79%	20.64%
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$20.90M	$84.30M	$130.6M
YoY Change	8.29%	-35.45%	591.01%
% of Gross Profit		9.26%	13.89%
Operating Expenses	$2.991B	$2.222B	$2.166B
YoY Change	-62.43%	2.57%	0.52%
Operating Profit		$320.6M	$325.4M
YoY Change		-1.48%
Interest Expense	-$35.20M	-$35.10M	-$35.20M
YoY Change	-9.97%	-0.28%	26.16%
% of Operating Profit		-10.95%	-10.82%
Other Income/Expense, Net
YoY Change
Pretax Income	-$617.3M	$288.7M	$326.5M
YoY Change	-283.99%	-11.58%	-2.42%
Income Tax	$0.00	$86.70M	$105.7M
% Of Pretax Income		30.03%	32.37%
Net Earnings	-$369.0M	$202.0M	$220.8M
YoY Change	-263.42%	-8.51%	-0.14%
Net Earnings / Revenue	-14.17%	7.94%	8.73%
Basic Earnings Per Share	-$1.26	$0.68	$0.68
Diluted Earnings Per Share	-$1.26	$0.68	$0.68
COMMON SHARES
Basic Shares Outstanding	292.4M shares	298.2M shares	323.1M shares
Diluted Shares Outstanding		299.2M shares	324.5M shares

Concept	2011 Q4	2011 Q3	2010 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments
YoY Change
Cash & Equivalents	$117.0M	$52.00M	$79.00M
Short-Term Investments
Other Short-Term Assets
YoY Change
Inventory
Prepaid Expenses
Receivables
Other Receivables
Total Short-Term Assets
YoY Change
LONG-TERM ASSETS
Property, Plant & Equipment	$493.3M	$492.1M	$468.0M
YoY Change	3.46%	5.15%	8.84%
Goodwill	$201.2M	$201.2M
YoY Change	0.0%
Intangibles
YoY Change
Long-Term Investments	$49.21B	$48.76B	$47.72B
YoY Change	6.43%	2.18%	10.68%
Other Assets			$0.00
YoY Change
Total Long-Term Assets
YoY Change
TOTAL ASSETS
Total Short-Term Assets
Total Long-Term Assets
Total Assets	$59.56B	$60.04B	$59.06B
YoY Change	3.92%	1.67%	8.41%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable
YoY Change
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$312.0M	$342.0M	$225.0M
YoY Change	38.67%	52.0%
Total Short-Term Liabilities	$350.0M	$425.0M	$379.0M
YoY Change	-3.05%	12.14%	163.19%
LONG-TERM LIABILITIES
Long-Term Debt	$2.570B	$2.587B	$2.661B
YoY Change	-2.32%	-2.78%	3.14%
Other Long-Term Liabilities	$1.815B	$1.526B	$1.678B
YoY Change	15.75%	-9.06%	6.34%
Total Long-Term Liabilities	$4.385B	$4.113B	$4.339B
YoY Change	4.43%	-5.21%	4.35%
TOTAL LIABILITIES
Total Short-Term Liabilities	$350.0M	$425.0M	$379.0M
Total Long-Term Liabilities	$4.385B	$4.113B	$4.339B
Total Liabilities	$51.39B	$50.58B	$50.13B
YoY Change	6.25%	0.9%	8.43%
SHAREHOLDERS EQUITY
Retained Earnings	$6.611B	$7.487B
YoY Change	-6.37%
Common Stock	$2.627B	$2.617B
YoY Change	-0.94%
Preferred Stock
YoY Change
Treasury Stock (at cost)	$1.530B	$1.530B
YoY Change	37.82%
Treasury Stock Shares	65.98M shares	65.98M shares
Shareholders Equity	$8.170B	$8.996B	$8.924B
YoY Change
Total Liabilities & Shareholders Equity	$59.56B	$60.04B	$59.06B
YoY Change	3.92%	1.67%	8.41%

Concept	2011 Q4	2011 Q3	2010 Q3
OPERATING ACTIVITIES
Net Income	-$369.0M	$202.0M	$220.8M
YoY Change	-263.42%	-8.51%	-0.14%
Depreciation, Depletion And Amortization	$20.90M	$84.30M	$130.6M
YoY Change	8.29%	-35.45%	591.01%
Cash From Operating Activities	$405.0M	$173.0M	$245.4M
YoY Change	43.11%	-29.5%	-0.04%
INVESTING ACTIVITIES
Capital Expenditures
YoY Change
Acquisitions
YoY Change
Other Investing Activities	-$269.3M	-$94.80M	-$413.8M
YoY Change	16.68%	-77.09%	24.53%
Cash From Investing Activities	-$269.3M	-$94.80M	-$413.8M
YoY Change	16.68%	-77.09%	24.53%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net
YoY Change
Debt Paid & Issued, Net
YoY Change
Cash From Financing Activities	-71.40M	-97.10M	165.6M
YoY Change	-7.51%	-158.64%	-36.01%
NET CHANGE
Cash From Operating Activities	405.0M	173.0M	245.4M
Cash From Investing Activities	-269.3M	-94.80M	-413.8M
Cash From Financing Activities	-71.40M	-97.10M	165.6M
Net Change In Cash	64.30M	-18.90M	-2.800M
YoY Change	-357.2%	575.0%	-101.63%
FREE CASH FLOW
Cash From Operating Activities	$405.0M	$173.0M	$245.4M
Capital Expenditures
Free Cash Flow
YoY Change

Frame	Concept Type	Concept / XBRL Key	Value	Unit
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	7000000	USD
	us-gaap	Impairment Of Investments ImpairmentOfInvestments	400000	USD
	us-gaap	Impairment Of Investments ImpairmentOfInvestments	2100000	USD
CY2011Q3	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	695500000	USD
CY2010Q4	us-gaap	Accrued Investment Income Receivable AccruedInvestmentIncomeReceivable	669800000	USD
CY2011Q3	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	885600000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	408300000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	361000000	USD
CY2011Q3	us-gaap	Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax	421100000	USD
CY2011Q3	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	303600000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax	318600000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-110900000	USD
CY2011Q3	us-gaap	Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax	-116900000	USD
CY2010Q4	us-gaap	Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Availableforsale Debt Securities AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities	-2100000	USD
CY2011Q3	us-gaap	Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Availableforsale Debt Securities AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities	0	USD
CY2010Q4	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2615400000	USD
CY2011Q3	us-gaap	Additional Paid In Capital Common Stock AdditionalPaidInCapitalCommonStock	2580900000	USD
CY2010Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3600000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2100000	shares
CY2011Q3	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	2400000	shares
	us-gaap	Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount	3600000	shares
CY2011Q3	us-gaap	Assets Assets	60040900000	USD
CY2010Q4	us-gaap	Assets Assets	57307700000	USD
CY2011Q3	us-gaap	Available For Sale Securities AvailableForSaleSecurities	42434700000	USD
CY2010Q4	us-gaap	Available For Sale Securities AvailableForSaleSecurities	40035600000	USD
CY2011Q3	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	36746700000	USD
CY2010Q4	us-gaap	Available For Sale Securities Amortized Cost AvailableForSaleSecuritiesAmortizedCost	36546600000	USD
CY2011Q3	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	2627700000	USD
CY2010Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue	3467600000	USD
	us-gaap	Cash And Cash Equivalents Period Increase Decrease CashAndCashEquivalentsPeriodIncreaseDecrease	-1400000	USD
CY2011Q3	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	852100000	USD
CY2010Q4	us-gaap	Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue	1290100000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	9501600000	USD
CY2011Q3	us-gaap	Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost	9563700000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	4740600000	USD
CY2011Q3	us-gaap	Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost	5061200000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	18570900000	USD
CY2011Q3	us-gaap	Available For Sale Securities Debt Maturities After Ten Years Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost	18687800000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	36546600000	USD
CY2011Q3	us-gaap	Available For Sale Securities Debt Maturities Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost	36746700000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	685700000	USD
CY2011Q3	us-gaap	Available For Sale Securities Debt Maturities Within One Year Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost	669600000	USD
CY2010Q4	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	3047800000	USD
CY2011Q3	us-gaap	Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost	2764400000	USD
CY2011Q3	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	14800000	USD
CY2010Q3	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	6000000	USD
	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	33000000	USD
	us-gaap	Available For Sale Securities Gross Realized Gains AvailableForSaleSecuritiesGrossRealizedGains	35400000	USD
CY2010Q3	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	4100000	USD
CY2011Q3	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	5400000	USD
	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	25800000	USD
	us-gaap	Available For Sale Securities Gross Realized Losses AvailableForSaleSecuritiesGrossRealizedLosses	22100000	USD
CY2011Q3	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	269600000	USD
CY2010Q4	us-gaap	Available For Sale Securities Gross Unrealized Losses1 AvailableForSaleSecuritiesGrossUnrealizedLosses1	237400000	USD
CY2011Q3	us-gaap	Available For Sale Securities Pledged As Collateral AvailableForSaleSecuritiesPledgedAsCollateral	131600000	USD
CY2010Q4	us-gaap	Available For Sale Securities Pledged As Collateral AvailableForSaleSecuritiesPledgedAsCollateral	158800000	USD
CY2011Q3	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1	127900000	USD
CY2010Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1	116100000	USD
CY2011Q3	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1	141700000	USD
CY2010Q4	us-gaap	Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses1 AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1	121300000	USD
CY2011Q3	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	5957600000	USD
CY2010Q4	us-gaap	Availableforsale Securities Gross Unrealized Gain AvailableforsaleSecuritiesGrossUnrealizedGain	3726400000	USD
	us-gaap	Basis Of Accounting BasisOfAccounting	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Basis of Presentation</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The accompanying consolidated financial statements of Unum Group and its subsidiaries (the Company) have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. For further information, refer to the consolidated financial statements and footnotes included in our annual report on Form 10-K for the year ended </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2010</font><font style="font-family:inherit;font-size:10pt;">.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In our opinion, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Interim results are not necessarily indicative of full year performance.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In connection with our preparation of the consolidated financial statements, we evaluated events that occurred subsequent to </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">September 30, 2011</font><font style="font-family:inherit;font-size:10pt;"> for recognition or disclosure in our financial statements and notes to our financial statements.</font></div></div>
CY2011Q3	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	2252300000	USD
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	6711700000	USD
CY2010Q3	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	2201400000	USD
	us-gaap	Benefits Losses And Expenses BenefitsLossesAndExpenses	6604300000	USD
CY2011Q3	us-gaap	Cash Cash	52200000	USD
CY2010Q4	us-gaap	Cash Cash	53600000	USD
CY2010Q3	us-gaap	Cash Cash	78600000	USD
CY2009Q4	us-gaap	Cash Cash	71600000	USD
CY2011Q3	us-gaap	Cash Collateral For Borrowed Securities CashCollateralForBorrowedSecurities	342400000	USD
	us-gaap	Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths	33600000	USD
	us-gaap	Cash Flow Hedge Ineffectiveness Is Immaterial CashFlowHedgeIneffectivenessIsImmaterial	0
	us-gaap	Cash Flow Hedge Ineffectiveness Is Immaterial CashFlowHedgeIneffectivenessIsImmaterial	0
CY2011Q3	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2010Q4	us-gaap	Commitments And Contingencies CommitmentsAndContingencies		USD
CY2010Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2011Q3	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.10
CY2011Q3	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	725000000	shares
CY2010Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	725000000	shares
CY2011Q3	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	358312558	shares
CY2010Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	364842919	shares
CY2011Q3	us-gaap	Common Stock Value CommonStockValue	35800000	USD
CY2010Q4	us-gaap	Common Stock Value CommonStockValue	36500000	USD
CY2011Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	655800000	USD
CY2010Q3	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	276700000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1205100000	USD
	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	813100000	USD
	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	210700000	USD
	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	250700000	USD
CY2010Q3	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	80600000	USD
CY2011Q3	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	54400000	USD
CY2010Q4	us-gaap	Debt Current DebtCurrent	225100000	USD
CY2011Q3	us-gaap	Debt Current DebtCurrent	342400000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	90000000	USD
CY2010Q3	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	25100000	USD
	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	84800000	USD
CY2011Q3	us-gaap	Deferred Income Tax Expense Benefit DeferredIncomeTaxExpenseBenefit	33300000	USD
CY2010Q4	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	417200000	USD
CY2011Q3	us-gaap	Deferred Income Tax Liabilities DeferredIncomeTaxLiabilities	795300000	USD
CY2011Q3	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	125200000	USD
	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	400400000	USD
CY2010Q3	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	130600000	USD
	us-gaap	Deferred Policy Acquisition Cost Amortization Expense DeferredPolicyAcquisitionCostAmortizationExpense	407700000	USD
CY2011Q3	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	2572400000	USD
CY2010Q4	us-gaap	Deferred Policy Acquisition Costs DeferredPolicyAcquisitionCosts	2521100000	USD
	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	-472100000	USD
	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	-455500000	USD
CY2010Q3	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	-150900000	USD
CY2011Q3	us-gaap	Deferred Policy Acquisition Costs Additions DeferredPolicyAcquisitionCostsAdditions	-155600000	USD
CY2011Q3	us-gaap	Deferred Tax Assets Net DeferredTaxAssetsNet	118300000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	60200000	USD
	us-gaap	Depreciation Amortization And Accretion Net DepreciationAmortizationAndAccretionNet	56100000	USD
CY2011Q3	us-gaap	Derivative Assets DerivativeAssets	143200000	USD
CY2010Q4	us-gaap	Derivative Assets DerivativeAssets	99100000	USD
CY2010Q4	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	39100000	USD
CY2011Q3	us-gaap	Derivative Collateral Obligation To Return Cash DerivativeCollateralObligationToReturnCash	0	USD
CY2011Q3	us-gaap	Derivative Collateral Right To Reclaim Cash DerivativeCollateralRightToReclaimCash	0	USD
CY2010Q3	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-12500000	USD
	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	48400000	USD
CY2011Q3	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	55200000	USD
	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	19200000	USD
CY2010Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	0	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	0	USD
CY2011Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	0	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet	0	USD
CY2010Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	-42200000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	76300000	USD
CY2011Q3	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	59400000	USD
	us-gaap	Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet	12900000	USD
CY2011Q3	us-gaap	Derivative Liabilities DerivativeLiabilities	275400000	USD
CY2010Q4	us-gaap	Derivative Liabilities DerivativeLiabilities	295900000	USD
CY2010Q4	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	199600000	USD
CY2011Q3	us-gaap	Derivative Net Liability Position Aggregate Fair Value DerivativeNetLiabilityPositionAggregateFairValue	154700000	USD
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.01
CY2010Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.68
	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	2.16
CY2011Q3	us-gaap	Earnings Per Share Basic EarningsPerShareBasic	0.69
CY2010Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.68
CY2011Q3	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	0.69
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.00
	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	2.15
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	-100000	USD
	us-gaap	Effect Of Exchange Rate On Cash And Cash Equivalents EffectOfExchangeRateOnCashAndCashEquivalents	0	USD
CY2010Q3	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	1600000	USD
	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	-3700000	USD
	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	-24400000	USD
CY2011Q3	us-gaap	Embedded Derivative Gain Loss On Embedded Derivative Net EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet	-33700000	USD
CY2011Q3	us-gaap	Fair Value Level1 To Level2 Transfers Amount FairValueLevel1ToLevel2TransfersAmount	3078100000	USD
	us-gaap	Fair Value Level1 To Level2 Transfers Amount FairValueLevel1ToLevel2TransfersAmount	2523500000	USD
CY2010Q3	us-gaap	Fair Value Level1 To Level2 Transfers Amount FairValueLevel1ToLevel2TransfersAmount	2527500000	USD
	us-gaap	Fair Value Level1 To Level2 Transfers Amount FairValueLevel1ToLevel2TransfersAmount	1698400000	USD
CY2011Q3	us-gaap	Fair Value Level2 To Level1 Transfers Amount FairValueLevel2ToLevel1TransfersAmount	2641000000	USD
	us-gaap	Fair Value Level2 To Level1 Transfers Amount FairValueLevel2ToLevel1TransfersAmount	3239800000	USD
	us-gaap	Fair Value Level2 To Level1 Transfers Amount FairValueLevel2ToLevel1TransfersAmount	3731600000	USD
CY2010Q3	us-gaap	Fair Value Level2 To Level1 Transfers Amount FairValueLevel2ToLevel1TransfersAmount	3148400000	USD
CY2010Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	0	USD
CY2010Q3	us-gaap	Financing Receivable Allowance For Credit Losses Provisions FinancingReceivableAllowanceForCreditLossesProvisions	400000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Provisions FinancingReceivableAllowanceForCreditLossesProvisions	900000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	100000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	-2800000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings	-2000000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome	9600000	USD
CY2010Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome	18400000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome	58200000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome	21400000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	30000000	USD
CY2010Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	20800000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	20800000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases	91100000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	29500000	USD
CY2010Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	7400000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	54200000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales	48300000	USD
CY2010Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	235700000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	339800000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	395900000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3	321100000	USD
CY2010Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	93300000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	234600000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	513000000	USD
	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3 FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3	579900000	USD
CY2011Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	903900000	USD
CY2010Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	525300000	USD
CY2011Q2	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	788500000	USD
CY2010Q3	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	699500000	USD
CY2009Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	869400000	USD
CY2010Q4	us-gaap	Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetValue	1025700000	USD
CY2010Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	1500000	USD
CY2009Q4	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	3200000	USD
CY2010Q2	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	500000	USD
CY2010Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	900000	USD
CY2011Q3	us-gaap	Financing Receivable Allowance For Credit Losses FinancingReceivableAllowanceForCreditLosses	1500000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Provisions FinancingReceivableAllowanceForCreditLossesProvisions	0	USD
CY2011Q3	us-gaap	Financing Receivable Allowance For Credit Losses Provisions FinancingReceivableAllowanceForCreditLossesProvisions	0	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	3200000	USD
	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	0	USD
CY2010Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	0	USD
CY2011Q3	us-gaap	Financing Receivable Allowance For Credit Losses Write Offs FinancingReceivableAllowanceForCreditLossesWriteOffs	0	USD
CY2011Q3	us-gaap	Financing Receivable Recorded Investment30 To59 Days Past Due FinancingReceivableRecordedInvestment30To59DaysPastDue	9500000	USD
CY2011Q3	us-gaap	Financing Receivable Recorded Investment Equal To Greater Than90 Days Past Due FinancingReceivableRecordedInvestmentEqualToGreaterThan90DaysPastDue	10100000	USD
CY2010Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-2300000	USD
CY2011Q3	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	400000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-2600000	USD
	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-1100000	USD
	us-gaap	Gain Loss On Investments GainLossOnInvestments	-2800000	USD
CY2011Q3	us-gaap	Gain Loss On Investments GainLossOnInvestments	-23900000	USD
CY2010Q3	us-gaap	Gain Loss On Investments GainLossOnInvestments	1100000	USD
	us-gaap	Gain Loss On Investments GainLossOnInvestments	-12300000	USD
	us-gaap	Gain Loss On Investments Excluding Other Than Temporary Impairments GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments	-8100000	USD
CY2010Q3	us-gaap	Gain Loss On Investments Excluding Other Than Temporary Impairments GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments	1100000	USD
	us-gaap	Gain Loss On Investments Excluding Other Than Temporary Impairments GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments	7600000	USD
CY2011Q3	us-gaap	Gain Loss On Investments Excluding Other Than Temporary Impairments GainLossOnInvestmentsExcludingOtherThanTemporaryImpairments	-22700000	USD
CY2010Q4	us-gaap	Goodwill Goodwill	201200000	USD
CY2011Q3	us-gaap	Goodwill Goodwill	201200000	USD
CY2011Q3	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	26400000	USD
	us-gaap	Impaired Financing Receivable Average Recorded Investment ImpairedFinancingReceivableAverageRecordedInvestment	20900000	USD
	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	600000	USD
CY2011Q3	us-gaap	Impaired Financing Receivable Interest Income Accrual Method ImpairedFinancingReceivableInterestIncomeAccrualMethod	200000	USD
CY2011Q3	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	32700000	USD
CY2010Q4	us-gaap	Impaired Financing Receivable Recorded Investment ImpairedFinancingReceivableRecordedInvestment	22900000	USD
CY2010Q4	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	1500000	USD
CY2011Q3	us-gaap	Impaired Financing Receivable Related Allowance ImpairedFinancingReceivableRelatedAllowance	1500000	USD
CY2010Q4	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	24400000	USD
CY2011Q3	us-gaap	Impaired Financing Receivable Unpaid Principal Balance ImpairedFinancingReceivableUnpaidPrincipalBalance	34200000	USD
CY2011Q3	us-gaap	Impairment Of Investments ImpairmentOfInvestments	400000	USD
CY2010Q3	us-gaap	Impairment Of Investments ImpairmentOfInvestments	400000	USD
CY2010Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	326500000	USD
CY2011Q3	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	293300000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	995800000	USD
	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	961500000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	300700000	USD
	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	335500000	USD
CY2011Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	87700000	USD
CY2010Q3	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	105700000	USD
	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	2700000	USD
	us-gaap	Income Tax Reconciliation Change In Enacted Tax Rate IncomeTaxReconciliationChangeInEnactedTaxRate	6800000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	41200000	USD
	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	124500000	USD
	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	206600000	USD
	us-gaap	Increase Decrease In Accrued Investment Income Receivable IncreaseDecreaseInAccruedInvestmentIncomeReceivable	225600000	USD
	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	71700000	USD
	us-gaap	Increase Decrease In Deferred Policy Acquisition Costs IncreaseDecreaseInDeferredPolicyAcquisitionCosts	47800000	USD
	us-gaap	Increase Decrease In Insurance Liabilities IncreaseDecreaseInInsuranceLiabilities	440400000	USD
	us-gaap	Increase Decrease In Insurance Liabilities IncreaseDecreaseInInsuranceLiabilities	321700000	USD
	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	-35900000	USD
	us-gaap	Increase Decrease In Other Accrued Liabilities IncreaseDecreaseInOtherAccruedLiabilities	12400000	USD
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	44100000	USD
	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	45800000	USD
	us-gaap	Ineffectiveness On Interest Rate Fair Value Hedges Is Immaterial IneffectivenessOnInterestRateFairValueHedgesIsImmaterial	0
	us-gaap	Insurance Commissions InsuranceCommissions	662700000	USD
	us-gaap	Insurance Commissions InsuranceCommissions	640100000	USD
CY2010Q3	us-gaap	Insurance Commissions InsuranceCommissions	214000000	USD
CY2011Q3	us-gaap	Insurance Commissions InsuranceCommissions	220500000	USD
	us-gaap	Interest And Debt Expense InterestAndDebtExpense	108100000	USD
CY2011Q3	us-gaap	Interest And Debt Expense InterestAndDebtExpense	35100000	USD
	us-gaap	Interest And Debt Expense InterestAndDebtExpense	102700000	USD
CY2010Q3	us-gaap	Interest And Debt Expense InterestAndDebtExpense	35200000	USD
CY2011Q3	us-gaap	Investments Investments	48763700000	USD
CY2010Q4	us-gaap	Investments Investments	46240900000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	582800000	USD
CY2010Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	194100000	USD
	us-gaap	Labor And Related Expense LaborAndRelatedExpense	598900000	USD
CY2011Q3	us-gaap	Labor And Related Expense LaborAndRelatedExpense	198300000	USD
CY2010Q4	us-gaap	Liabilities Liabilities	48363300000	USD
CY2011Q3	us-gaap	Liabilities Liabilities	50580800000	USD
CY2010Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	57307700000	USD
CY2011Q3	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	60040900000	USD
CY2010Q4	us-gaap	Liability For Claims And Claims Adjustment Expense Disability Accident And Health LiabilityForClaimsAndClaimsAdjustmentExpenseDisabilityAccidentAndHealth	1565000000	USD
CY2011Q3	us-gaap	Liability For Claims And Claims Adjustment Expense Disability Accident And Health LiabilityForClaimsAndClaimsAdjustmentExpenseDisabilityAccidentAndHealth	1517500000	USD
CY2010Q4	us-gaap	Liability For Future Policy Benefits And Unpaid Claims And Claims Adjustment Expense LiabilityForFuturePolicyBenefitsAndUnpaidClaimsAndClaimsAdjustmentExpense	39715000000	USD
CY2011Q3	us-gaap	Liability For Future Policy Benefits And Unpaid Claims And Claims Adjustment Expense LiabilityForFuturePolicyBenefitsAndUnpaidClaimsAndClaimsAdjustmentExpense	41633400000	USD
CY2011Q3	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	2586500000	USD
CY2010Q4	us-gaap	Long Term Debt And Capital Lease Obligations LongTermDebtAndCapitalLeaseObligations	2631300000	USD
CY2011Q3	us-gaap	Marketable Securities Equity Securities MarketableSecuritiesEquitySecurities	10400000	USD
CY2010Q4	us-gaap	Marketable Securities Equity Securities MarketableSecuritiesEquitySecurities	10400000	USD
CY2010Q3	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	0	USD
	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	4200000	USD
CY2011Q3	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	1200000	USD
	us-gaap	Marketable Securities Realized Gain Loss Other Than Temporary Impairments Amount MarketableSecuritiesRealizedGainLossOtherThanTemporaryImpairmentsAmount	10400000	USD
CY2011Q3	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	1606900000	USD
CY2010Q4	us-gaap	Mortgage Loans On Real Estate Commercial And Consumer Net MortgageLoansOnRealEstateCommercialAndConsumerNet	1516800000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-63900000	USD
	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-649000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-141000000	USD
	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-842900000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	913800000	USD
	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	788700000	USD
	us-gaap	Net Income Loss NetIncomeLoss	660800000	USD
CY2010Q3	us-gaap	Net Income Loss NetIncomeLoss	220800000	USD
	us-gaap	Net Income Loss NetIncomeLoss	660300000	USD
CY2011Q3	us-gaap	Net Income Loss NetIncomeLoss	205600000	USD
CY2010Q3	us-gaap	Net Investment Income NetInvestmentIncome	618400000	USD
	us-gaap	Net Investment Income NetInvestmentIncome	1861200000	USD
CY2011Q3	us-gaap	Net Investment Income NetInvestmentIncome	629200000	USD
	us-gaap	Net Investment Income NetInvestmentIncome	1885000000	USD
CY2011Q3	us-gaap	Notional Amount Of Derivatives NotionalAmountOfDerivatives	1498700000	USD
CY2011Q2	us-gaap	Notional Amount Of Derivatives NotionalAmountOfDerivatives	1538700000	USD
CY2010Q4	us-gaap	Notional Amount Of Derivatives NotionalAmountOfDerivatives	1681900000	USD
CY2011Q3	us-gaap	Notional Amount Of Foreign Currency Cash Flow Hedge Derivatives NotionalAmountOfForeignCurrencyCashFlowHedgeDerivatives	574700000	USD
CY2010Q4	us-gaap	Notional Amount Of Foreign Currency Cash Flow Hedge Derivatives NotionalAmountOfForeignCurrencyCashFlowHedgeDerivatives	617900000	USD
CY2011Q3	us-gaap	Notional Amount Of Interest Rate Cash Flow Hedge Derivatives NotionalAmountOfInterestRateCashFlowHedgeDerivatives	385000000	USD
CY2010Q4	us-gaap	Notional Amount Of Interest Rate Cash Flow Hedge Derivatives NotionalAmountOfInterestRateCashFlowHedgeDerivatives	540000000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	973800000	USD
CY2010Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	325400000	USD
	us-gaap	Operating Income Loss OperatingIncomeLoss	998600000	USD
CY2011Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	317200000	USD
CY2010Q4	us-gaap	Other Assets OtherAssets	650600000	USD
CY2011Q3	us-gaap	Other Assets OtherAssets	660300000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	1124500000	USD
	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	1416900000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	907200000	USD
	us-gaap	Other Comprehensive Income Available For Sale Securities Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeAvailableForSaleSecuritiesAdjustmentNetOfTaxPeriodIncreaseDecrease	2035400000	USD
	us-gaap	Other Comprehensive Income Available For Sale Securities Tax OtherComprehensiveIncomeAvailableForSaleSecuritiesTax	1071900000	USD
	us-gaap	Other Comprehensive Income Available For Sale Securities Tax OtherComprehensiveIncomeAvailableForSaleSecuritiesTax	753800000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Available For Sale Securities Tax OtherComprehensiveIncomeAvailableForSaleSecuritiesTax	599600000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Available For Sale Securities Tax OtherComprehensiveIncomeAvailableForSaleSecuritiesTax	475200000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	15000000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	27000000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	2800000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDefinedBenefitPlansAdjustmentNetOfTaxPeriodIncreaseDecrease	5200000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	1900000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	-3600000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	2800000	USD
	us-gaap	Other Comprehensive Income Defined Benefit Plans Tax OtherComprehensiveIncomeDefinedBenefitPlansTax	6900000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	42200000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	65200000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	-11700000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Net Of Tax Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesNetOfTaxPeriodIncreaseDecrease	60100000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Effect Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease	-6000000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Effect Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease	22900000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Effect Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease	34700000	USD
	us-gaap	Other Comprehensive Income Derivatives Qualifying As Hedges Tax Effect Period Increase Decrease OtherComprehensiveIncomeDerivativesQualifyingAsHedgesTaxEffectPeriodIncreaseDecrease	32000000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-24700000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-34100000	USD
	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	-6000000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Foreign Currency Transaction And Translation Adjustment Net Of Tax Period Increase Decrease OtherComprehensiveIncomeForeignCurrencyTransactionAndTranslationAdjustmentNetOfTaxPeriodIncreaseDecrease	53300000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	450200000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	544300000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	55900000	USD
	us-gaap	Other Comprehensive Income Loss Net Of Tax Period Increase Decrease OtherComprehensiveIncomeLossNetOfTaxPeriodIncreaseDecrease	152800000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	1500000	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	3300000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	5300000	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Net Of Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeNetOfTax	7700000	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	4600000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	3400000	USD
	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	1100000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Reclassification Adjustment For Sale Of Securities Included In Net Income Tax OtherComprehensiveIncomeReclassificationAdjustmentForSaleOfSecuritiesIncludedInNetIncomeTax	400000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	906200000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1124500000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	2035300000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Net Of Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodNetOfTax	1419000000	USD
CY2010Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	474700000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	754900000	USD
CY2011Q3	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	599600000	USD
	us-gaap	Other Comprehensive Income Unrealized Holding Gain Loss On Securities Arising During Period Tax OtherComprehensiveIncomeUnrealizedHoldingGainLossOnSecuritiesArisingDuringPeriodTax	1071900000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	585700000	USD
	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	590500000	USD
CY2010Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	190900000	USD
CY2011Q3	us-gaap	Other Cost And Expense Operating OtherCostAndExpenseOperating	193200000	USD
CY2010Q3	us-gaap	Other Income OtherIncome	58200000	USD
	us-gaap	Other Income OtherIncome	174800000	USD
CY2011Q3	us-gaap	Other Income OtherIncome	59100000	USD
	us-gaap	Other Income OtherIncome	178500000	USD
CY2011Q3	us-gaap	Other Liabilities OtherLiabilities	1526100000	USD
CY2010Q4	us-gaap	Other Liabilities OtherLiabilities	1567600000	USD
CY2011Q3	us-gaap	Other Long Term Investments OtherLongTermInvestments	611100000	USD
CY2010Q4	us-gaap	Other Long Term Investments OtherLongTermInvestments	529300000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	16900000	USD
	us-gaap	Other Noncash Income Expense OtherNoncashIncomeExpense	-4200000	USD
CY2011Q3	us-gaap	Other Policyholder Funds OtherPolicyholderFunds	1603500000	USD
CY2010Q4	us-gaap	Other Policyholder Funds OtherPolicyholderFunds	1669700000	USD
CY2011Q3	us-gaap	Other Short Term Investments OtherShortTermInvestments	1035900000	USD
CY2010Q4	us-gaap	Other Short Term Investments OtherShortTermInvestments	1163100000	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	0	USD
CY2010Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	8500000	USD
CY2009Q4	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	18300000	USD
CY2010Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	18300000	USD
CY2010Q2	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Credit Losses On Debt Securities Held OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsCreditLossesOnDebtSecuritiesHeld	0	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	0	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	0	USD
	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	8500000	USD
CY2010Q3	us-gaap	Other Than Temporary Impairment Credit Losses Recognized In Earnings Reductions Securities Sold OtherThanTemporaryImpairmentCreditLossesRecognizedInEarningsReductionsSecuritiesSold	0	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities	0	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities	2100000	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities	-100000	USD
CY2010Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParentAvailableforsaleSecurities	-1000000	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxPortionAttributableToParentAvailableforsaleSecurities	-1100000	USD
CY2010Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxPortionAttributableToParentAvailableforsaleSecurities	500000	USD
CY2011Q3	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxPortionAttributableToParentAvailableforsaleSecurities	0	USD
	us-gaap	Other Than Temporary Impairment Losses Investments Portion In Other Comprehensive Income Loss Tax Portion Attributable To Parent Availableforsale Securities OtherThanTemporaryImpairmentLossesInvestmentsPortionInOtherComprehensiveIncomeLossTaxPortionAttributableToParentAvailableforsaleSecurities	0	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	75900000	USD
	us-gaap	Payments For Proceeds From Other Investing Activities PaymentsForProceedsFromOtherInvestingActivities	100400000	USD
	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	70300000	USD
	us-gaap	Payments For Proceeds From Short Term Investments PaymentsForProceedsFromShortTermInvestments	-86300000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	619900000	USD
	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	324000000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	90300000	USD
	us-gaap	Payments Of Dividends PaymentsOfDividends	85400000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	2162200000	USD
	us-gaap	Payments To Acquire Available For Sale Securities PaymentsToAcquireAvailableForSaleSecurities	2958700000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	222100000	USD
	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	234300000	USD
	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	4736000000	USD
CY2010Q3	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	1587500000	USD
	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	4828000000	USD
CY2011Q3	us-gaap	Policyholder Benefits And Claims Incurred Net PolicyholderBenefitsAndClaimsIncurredNet	1635600000	USD
CY2011Q3	us-gaap	Preferred Stock Par Or Stated Value Per Share PreferredStockParOrStatedValuePerShare	0.10
CY2011Q3	us-gaap	Preferred Stock Shares Authorized PreferredStockSharesAuthorized	25000000	shares
CY2010Q4	us-gaap	Premiums And Other Receivables Net PremiumsAndOtherReceivablesNet	1665800000	USD
CY2011Q3	us-gaap	Premiums And Other Receivables Net PremiumsAndOtherReceivablesNet	1680400000	USD
CY2011Q3	us-gaap	Premiums Earned Net PremiumsEarnedNet	1881200000	USD
	us-gaap	Premiums Earned Net PremiumsEarnedNet	5563200000	USD
CY2010Q3	us-gaap	Premiums Earned Net PremiumsEarnedNet	1850200000	USD
	us-gaap	Premiums Earned Net PremiumsEarnedNet	5625700000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	9400000	USD
	us-gaap	Proceeds From Issuance Of Common Stock ProceedsFromIssuanceOfCommonStock	7600000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	396900000	USD
	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	0	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1235000000	USD
	us-gaap	Proceeds From Maturities Prepayments And Calls Of Available For Sale Securities ProceedsFromMaturitiesPrepaymentsAndCallsOfAvailableForSaleSecurities	1682400000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	3200000	USD
	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	1900000	USD
	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	102300000	USD
	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	101300000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	723900000	USD
	us-gaap	Proceeds From Sale Of Available For Sale Securities ProceedsFromSaleOfAvailableForSaleSecurities	908800000	USD
CY2010Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	476800000	USD
CY2011Q3	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	492100000	USD
CY2011Q3	us-gaap	Real Estate Acquired Through Foreclosure RealEstateAcquiredThroughForeclosure	9800000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-2800000	USD
	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-12300000	USD
CY2010Q3	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	1100000	USD
CY2011Q3	us-gaap	Realized Investment Gains Losses RealizedInvestmentGainsLosses	-23900000	USD
CY2011Q3	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	4923100000	USD
CY2010Q4	us-gaap	Reinsurance Recoverables ReinsuranceRecoverables	4827900000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	62700000	USD
	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	66900000	USD
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	0	USD
	us-gaap	Repayments Of Short Term Debt RepaymentsOfShortTermDebt	-117300000	USD
	us-gaap	Repurchase Agreements Maturities RepurchaseAgreementsMaturities	30
CY2011Q3	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	7487300000	USD
CY2010Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	7060800000	USD
	us-gaap	Revenues Revenues	7673200000	USD
CY2011Q3	us-gaap	Revenues Revenues	2545600000	USD
	us-gaap	Revenues Revenues	7600100000	USD
CY2010Q3	us-gaap	Revenues Revenues	2527900000	USD
CY2011Q3	us-gaap	Securities Loaned SecuritiesLoaned	344500000	USD
CY2011Q3	us-gaap	Securities Received As Collateral SecuritiesReceivedAsCollateral	15400000	USD
CY2011Q3	us-gaap	Securities Sold Under Agreements To Repurchase SecuritiesSoldUnderAgreementsToRepurchase	0.0	USD
CY2011Q3	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	2569500000	USD
	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	7602900000	USD
	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	7685500000	USD
CY2010Q3	us-gaap	Segment Reporting Information Revenue SegmentReportingInformationRevenue	2526800000	USD
	us-gaap	Stock Repurchase Program Remaining Authorized Repurchase Amount StockRepurchaseProgramRemainingAuthorizedRepurchaseAmount	524700000	USD
CY2011Q3	us-gaap	Stockholders Equity StockholdersEquity	9460100000	USD
CY2010Q4	us-gaap	Stockholders Equity StockholdersEquity	8944400000	USD
CY2010Q3	us-gaap	Stockholders Equity StockholdersEquity	8924100000	USD
CY2010Q4	us-gaap	Taxes Payable Current And Noncurrent TaxesPayableCurrentAndNoncurrent	135700000	USD
CY2011Q3	us-gaap	Taxes Payable Current And Noncurrent TaxesPayableCurrentAndNoncurrent	82600000	USD
CY2010Q4	us-gaap	Treasury Stock Shares TreasuryStockShares	48269467	shares
CY2011Q3	us-gaap	Treasury Stock Shares TreasuryStockShares	65975613	shares
CY2010Q3	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	9500000	shares
CY2010	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	16400000	shares
	us-gaap	Treasury Stock Shares Acquired TreasuryStockSharesAcquired	15200000	shares
CY2011Q1	us-gaap	Treasury Stock Shares Retired TreasuryStockSharesRetired	7700000	shares
CY2010Q4	us-gaap	Treasury Stock Value TreasuryStockValue	1110200000	USD
CY2011Q3	us-gaap	Treasury Stock Value TreasuryStockValue	1530100000	USD
CY2010	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	356000000	USD
	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	327500000	USD
CY2010Q3	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	197700000	USD
CY2011Q3	us-gaap	Unearned Premiums UnearnedPremiums	493500000	USD
CY2010Q4	us-gaap	Unearned Premiums UnearnedPremiums	436700000	USD
CY2011Q3	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	133500000	USD
CY2011Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	1500000	USD
	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	4000000	USD
CY2010Q3	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	1500000	USD
	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	4100000	USD
CY2011Q3	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	15200000	USD
CY2011Q3	us-gaap	Variable Interest Entity Nonconsolidated Carrying Amount Assets VariableInterestEntityNonconsolidatedCarryingAmountAssets	405100000	USD
CY2011Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	987100	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1344500	shares
CY2010Q3	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1383500	shares
	us-gaap	Weighted Average Number Diluted Shares Outstanding Adjustment WeightedAverageNumberDilutedSharesOutstandingAdjustment	1223900	shares
CY2010Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	324467000	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	306918400	shares
	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	330173100	shares
CY2011Q3	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	299172900	shares
CY2011Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	298185800	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	305694500	shares
CY2010Q3	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	323083500	shares
	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	328828600	shares
CY2011Q3	unm	A2011 New Uk Tax Rate A2011NewUkTaxRate	0.26
CY2011Q1	unm	A2011 Original Uk Tax Rate A2011OriginalUkTaxRate	0.28
CY2011Q1	unm	A2011 Previous Uk Tax Rate A2011PreviousUkTaxRate	0.27
CY2011Q3	unm	A2012 Uk Tax Rate A2012UkTaxRate	0.25
CY2010Q4	unm	Available For Sale Securities Debt Maturities After Five Through Ten Years Unrealized Gain Position Grossgain AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedGainPositionGrossgain	931600000	USD
CY2011Q3	unm	Available For Sale Securities Debt Maturities After Five Through Ten Years Unrealized Gain Position Grossgain AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsUnrealizedGainPositionGrossgain	1191200000	USD

us-gaap

Cash And Cash Equivalents Period Increase Decrease

CashAndCashEquivalentsPeriodIncreaseDecrease

7000000

USD

us-gaap

Impairment Of Investments

ImpairmentOfInvestments

400000

USD

us-gaap

Impairment Of Investments

ImpairmentOfInvestments

2100000

USD

CY2011Q3

us-gaap

Accrued Investment Income Receivable

AccruedInvestmentIncomeReceivable

695500000

USD

CY2010Q4

us-gaap

Accrued Investment Income Receivable

AccruedInvestmentIncomeReceivable

669800000

USD

CY2011Q3

us-gaap

Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax

AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

885600000

USD

CY2010Q4

us-gaap

Accumulated Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax

AccumulatedOtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax

408300000

USD

CY2010Q4

us-gaap

Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax

AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax

361000000

USD

CY2011Q3

us-gaap

Accumulated Other Comprehensive Income Loss Cumulative Changes In Net Gain Loss From Cash Flow Hedges Effect Net Of Tax

AccumulatedOtherComprehensiveIncomeLossCumulativeChangesInNetGainLossFromCashFlowHedgesEffectNetOfTax

421100000

USD

CY2011Q3

us-gaap

Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax

AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

303600000

USD

CY2010Q4

us-gaap

Accumulated Other Comprehensive Income Loss Defined Benefit Pension And Other Postretirement Plans Net Of Tax

AccumulatedOtherComprehensiveIncomeLossDefinedBenefitPensionAndOtherPostretirementPlansNetOfTax

318600000

USD

CY2010Q4

us-gaap

Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax

AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax

-110900000

USD

CY2011Q3

us-gaap

Accumulated Other Comprehensive Income Loss Foreign Currency Translation Adjustment Net Of Tax

AccumulatedOtherComprehensiveIncomeLossForeignCurrencyTranslationAdjustmentNetOfTax

-116900000

USD

CY2010Q4

us-gaap

Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Availableforsale Debt Securities

AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities

-2100000

USD

CY2011Q3

us-gaap

Accumulated Other Comprehensive Income Loss Other Than Temporary Impairment Not Credit Loss Net Of Tax Availableforsale Debt Securities

AccumulatedOtherComprehensiveIncomeLossOtherThanTemporaryImpairmentNotCreditLossNetOfTaxAvailableforsaleDebtSecurities

0

USD

CY2010Q4

us-gaap

Additional Paid In Capital Common Stock

AdditionalPaidInCapitalCommonStock

2615400000

USD

CY2011Q3

us-gaap

Additional Paid In Capital Common Stock

AdditionalPaidInCapitalCommonStock

2580900000

USD

CY2010Q3

us-gaap

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

3600000

shares

us-gaap

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

2100000

shares

CY2011Q3

us-gaap

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

2400000

shares

us-gaap

Antidilutive Securities Excluded From Computation Of Earnings Per Share Amount

AntidilutiveSecuritiesExcludedFromComputationOfEarningsPerShareAmount

3600000

shares

CY2011Q3

us-gaap

Assets

60040900000

USD

CY2010Q4

us-gaap

Assets

57307700000

USD

CY2011Q3

us-gaap

Available For Sale Securities

AvailableForSaleSecurities

42434700000

USD

CY2010Q4

us-gaap

Available For Sale Securities

AvailableForSaleSecurities

40035600000

USD

CY2011Q3

us-gaap

Available For Sale Securities Amortized Cost

AvailableForSaleSecuritiesAmortizedCost

36746700000

USD

CY2010Q4

us-gaap

Available For Sale Securities Amortized Cost

AvailableForSaleSecuritiesAmortizedCost

36546600000

USD

CY2011Q3

us-gaap

Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value

AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue

2627700000

USD

CY2010Q4

us-gaap

Available For Sale Securities Continuous Unrealized Loss Position Less Than Twelve Months Fair Value

AvailableForSaleSecuritiesContinuousUnrealizedLossPositionLessThanTwelveMonthsFairValue

3467600000

USD

us-gaap

Cash And Cash Equivalents Period Increase Decrease

CashAndCashEquivalentsPeriodIncreaseDecrease

-1400000

USD

CY2011Q3

us-gaap

Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value

AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue

852100000

USD

CY2010Q4

us-gaap

Available For Sale Securities Continuous Unrealized Loss Position Twelve Months Or Longer Fair Value

AvailableForSaleSecuritiesContinuousUnrealizedLossPositionTwelveMonthsOrLongerFairValue

1290100000

USD

CY2010Q4

us-gaap

Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

9501600000

USD

CY2011Q3

us-gaap

Available For Sale Securities Debt Maturities After Five Through Ten Years Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesAfterFiveThroughTenYearsAmortizedCost

9563700000

USD

CY2010Q4

us-gaap

Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

4740600000

USD

CY2011Q3

us-gaap

Available For Sale Securities Debt Maturities After One Through Five Years Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesAfterOneThroughFiveYearsAmortizedCost

5061200000

USD

CY2010Q4

us-gaap

Available For Sale Securities Debt Maturities After Ten Years Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

18570900000

USD

CY2011Q3

us-gaap

Available For Sale Securities Debt Maturities After Ten Years Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesAfterTenYearsAmortizedCost

18687800000

USD

CY2010Q4

us-gaap

Available For Sale Securities Debt Maturities Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost

36546600000

USD

CY2011Q3

us-gaap

Available For Sale Securities Debt Maturities Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesAmortizedCost

36746700000

USD

CY2010Q4

us-gaap

Available For Sale Securities Debt Maturities Within One Year Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

685700000

USD

CY2011Q3

us-gaap

Available For Sale Securities Debt Maturities Within One Year Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesWithinOneYearAmortizedCost

669600000

USD

CY2010Q4

us-gaap

Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost

3047800000

USD

CY2011Q3

us-gaap

Available For Sale Securities Debt Maturities Without Single Maturity Date Amortized Cost

AvailableForSaleSecuritiesDebtMaturitiesWithoutSingleMaturityDateAmortizedCost

2764400000

USD

CY2011Q3

us-gaap

Available For Sale Securities Gross Realized Gains

AvailableForSaleSecuritiesGrossRealizedGains

14800000

USD

CY2010Q3

us-gaap

Available For Sale Securities Gross Realized Gains

AvailableForSaleSecuritiesGrossRealizedGains

6000000

USD

us-gaap

Available For Sale Securities Gross Realized Gains

AvailableForSaleSecuritiesGrossRealizedGains

33000000

USD

us-gaap

Available For Sale Securities Gross Realized Gains

AvailableForSaleSecuritiesGrossRealizedGains

35400000

USD

CY2010Q3

us-gaap

Available For Sale Securities Gross Realized Losses

AvailableForSaleSecuritiesGrossRealizedLosses

4100000

USD

CY2011Q3

us-gaap

Available For Sale Securities Gross Realized Losses

AvailableForSaleSecuritiesGrossRealizedLosses

5400000

USD

us-gaap

Available For Sale Securities Gross Realized Losses

AvailableForSaleSecuritiesGrossRealizedLosses

25800000

USD

us-gaap

Available For Sale Securities Gross Realized Losses

AvailableForSaleSecuritiesGrossRealizedLosses

22100000

USD

CY2011Q3

us-gaap

Available For Sale Securities Gross Unrealized Losses1

AvailableForSaleSecuritiesGrossUnrealizedLosses1

269600000

USD

CY2010Q4

us-gaap

Available For Sale Securities Gross Unrealized Losses1

AvailableForSaleSecuritiesGrossUnrealizedLosses1

237400000

USD

CY2011Q3

us-gaap

Available For Sale Securities Pledged As Collateral

AvailableForSaleSecuritiesPledgedAsCollateral

131600000

USD

CY2010Q4

us-gaap

Available For Sale Securities Pledged As Collateral

AvailableForSaleSecuritiesPledgedAsCollateral

158800000

USD

CY2011Q3

us-gaap

Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses1

AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1

127900000

USD

CY2010Q4

us-gaap

Availableforsale Securities Continuous Unrealized Loss Position12 Months Or Longer Aggregate Losses1

AvailableforsaleSecuritiesContinuousUnrealizedLossPosition12MonthsOrLongerAggregateLosses1

116100000

USD

CY2011Q3

us-gaap

Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses1

AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1

141700000

USD

CY2010Q4

us-gaap

Availableforsale Securities Continuous Unrealized Loss Position Less Than12 Months Aggregate Losses1

AvailableforsaleSecuritiesContinuousUnrealizedLossPositionLessThan12MonthsAggregateLosses1

121300000

USD

CY2011Q3

us-gaap

Availableforsale Securities Gross Unrealized Gain

AvailableforsaleSecuritiesGrossUnrealizedGain

5957600000

USD

CY2010Q4

us-gaap

Availableforsale Securities Gross Unrealized Gain

AvailableforsaleSecuritiesGrossUnrealizedGain

3726400000

USD

us-gaap

Basis Of Accounting

BasisOfAccounting

<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-weight:bold;">Basis of Presentation</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The accompanying consolidated financial statements of Unum Group and its subsidiaries (the Company) have been prepared in accordance with U.S. generally accepted accounting principles (GAAP) for interim financial information and with the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required by GAAP for complete financial statements. For further information, refer to the consolidated financial statements and footnotes included in our annual report on Form 10-K for the year ended </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">December 31, 2010</font><font style="font-family:inherit;font-size:10pt;">.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In our opinion, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation have been included. Interim results are not necessarily indicative of full year performance.</font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;"><br clear="none"/></font></div><div style="line-height:120%;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">In connection with our preparation of the consolidated financial statements, we evaluated events that occurred subsequent to </font><font style="font-family:inherit;font-size:10pt;color:#000000;text-decoration:none;">September 30, 2011</font><font style="font-family:inherit;font-size:10pt;"> for recognition or disclosure in our financial statements and notes to our financial statements.</font></div></div>

CY2011Q3

us-gaap

Benefits Losses And Expenses

BenefitsLossesAndExpenses

2252300000

USD

us-gaap

Benefits Losses And Expenses

BenefitsLossesAndExpenses

6711700000

USD

CY2010Q3

us-gaap

Benefits Losses And Expenses

BenefitsLossesAndExpenses

2201400000

USD

us-gaap

Benefits Losses And Expenses

BenefitsLossesAndExpenses

6604300000

USD

CY2011Q3

us-gaap

Cash

52200000

USD

CY2010Q4

us-gaap

Cash

53600000

USD

CY2010Q3

us-gaap

Cash

78600000

USD

CY2009Q4

us-gaap

Cash

71600000

USD

CY2011Q3

us-gaap

Cash Collateral For Borrowed Securities

CashCollateralForBorrowedSecurities

342400000

USD

us-gaap

Cash Flow Hedge Gain Loss To Be Reclassified Within Twelve Months

CashFlowHedgeGainLossToBeReclassifiedWithinTwelveMonths

33600000

USD

us-gaap

Cash Flow Hedge Ineffectiveness Is Immaterial

CashFlowHedgeIneffectivenessIsImmaterial

0

us-gaap

Cash Flow Hedge Ineffectiveness Is Immaterial

CashFlowHedgeIneffectivenessIsImmaterial

0

CY2011Q3

us-gaap

Commitments And Contingencies

CommitmentsAndContingencies

USD

CY2010Q4

us-gaap

Commitments And Contingencies

CommitmentsAndContingencies

USD

CY2010Q4

us-gaap

Common Stock Par Or Stated Value Per Share

CommonStockParOrStatedValuePerShare

0.10

CY2011Q3

us-gaap

Common Stock Par Or Stated Value Per Share

CommonStockParOrStatedValuePerShare

0.10

CY2011Q3

us-gaap

Common Stock Shares Authorized

CommonStockSharesAuthorized

725000000

shares

CY2010Q4

us-gaap

Common Stock Shares Authorized

CommonStockSharesAuthorized

725000000

shares

CY2011Q3

us-gaap

Common Stock Shares Issued

CommonStockSharesIssued

358312558

shares

CY2010Q4

us-gaap

Common Stock Shares Issued

CommonStockSharesIssued

364842919

shares

CY2011Q3

us-gaap

Common Stock Value

CommonStockValue

35800000

USD

CY2010Q4

us-gaap

Common Stock Value

CommonStockValue

36500000

USD

CY2011Q3

us-gaap

Comprehensive Income Net Of Tax

ComprehensiveIncomeNetOfTax

655800000

USD

CY2010Q3

us-gaap

Comprehensive Income Net Of Tax

ComprehensiveIncomeNetOfTax

276700000

USD

us-gaap

Comprehensive Income Net Of Tax

ComprehensiveIncomeNetOfTax

1205100000

USD

us-gaap

Comprehensive Income Net Of Tax

ComprehensiveIncomeNetOfTax

813100000

USD

us-gaap

Current Income Tax Expense Benefit

CurrentIncomeTaxExpenseBenefit

210700000

USD

us-gaap

Current Income Tax Expense Benefit

CurrentIncomeTaxExpenseBenefit

250700000

USD

CY2010Q3

us-gaap

Current Income Tax Expense Benefit

CurrentIncomeTaxExpenseBenefit

80600000

USD

CY2011Q3

us-gaap

Current Income Tax Expense Benefit

CurrentIncomeTaxExpenseBenefit

54400000

USD

CY2010Q4

us-gaap

Debt Current

DebtCurrent

225100000

USD

CY2011Q3

us-gaap

Debt Current

DebtCurrent

342400000

USD

us-gaap

Deferred Income Tax Expense Benefit

DeferredIncomeTaxExpenseBenefit

90000000

USD

CY2010Q3

us-gaap

Deferred Income Tax Expense Benefit

DeferredIncomeTaxExpenseBenefit

25100000

USD

us-gaap

Deferred Income Tax Expense Benefit

DeferredIncomeTaxExpenseBenefit

84800000

USD

CY2011Q3

us-gaap

Deferred Income Tax Expense Benefit

DeferredIncomeTaxExpenseBenefit

33300000

USD

CY2010Q4

us-gaap

Deferred Income Tax Liabilities

DeferredIncomeTaxLiabilities

417200000

USD

CY2011Q3

us-gaap

Deferred Income Tax Liabilities

DeferredIncomeTaxLiabilities

795300000

USD

CY2011Q3

us-gaap

Deferred Policy Acquisition Cost Amortization Expense

DeferredPolicyAcquisitionCostAmortizationExpense

125200000

USD

us-gaap

Deferred Policy Acquisition Cost Amortization Expense

DeferredPolicyAcquisitionCostAmortizationExpense

400400000

USD

CY2010Q3

us-gaap

Deferred Policy Acquisition Cost Amortization Expense

DeferredPolicyAcquisitionCostAmortizationExpense

130600000

USD

us-gaap

Deferred Policy Acquisition Cost Amortization Expense

DeferredPolicyAcquisitionCostAmortizationExpense

407700000

USD

CY2011Q3

us-gaap

Deferred Policy Acquisition Costs

DeferredPolicyAcquisitionCosts

2572400000

USD

CY2010Q4

us-gaap

Deferred Policy Acquisition Costs

DeferredPolicyAcquisitionCosts

2521100000

USD

us-gaap

Deferred Policy Acquisition Costs Additions

DeferredPolicyAcquisitionCostsAdditions

-472100000

USD

us-gaap

Deferred Policy Acquisition Costs Additions

DeferredPolicyAcquisitionCostsAdditions

-455500000

USD

CY2010Q3

us-gaap

Deferred Policy Acquisition Costs Additions

DeferredPolicyAcquisitionCostsAdditions

-150900000

USD

CY2011Q3

us-gaap

Deferred Policy Acquisition Costs Additions

DeferredPolicyAcquisitionCostsAdditions

-155600000

USD

CY2011Q3

us-gaap

Deferred Tax Assets Net

DeferredTaxAssetsNet

118300000

USD

us-gaap

Depreciation Amortization And Accretion Net

DepreciationAmortizationAndAccretionNet

60200000

USD

us-gaap

Depreciation Amortization And Accretion Net

DepreciationAmortizationAndAccretionNet

56100000

USD

CY2011Q3

us-gaap

Derivative Assets

DerivativeAssets

143200000

USD

CY2010Q4

us-gaap

Derivative Assets

DerivativeAssets

99100000

USD

CY2010Q4

us-gaap

Derivative Collateral Obligation To Return Cash

DerivativeCollateralObligationToReturnCash

39100000

USD

CY2011Q3

us-gaap

Derivative Collateral Obligation To Return Cash

DerivativeCollateralObligationToReturnCash

0

USD

CY2011Q3

us-gaap

Derivative Collateral Right To Reclaim Cash

DerivativeCollateralRightToReclaimCash

0

USD

CY2010Q3

us-gaap

Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net

DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet

-12500000

USD

us-gaap

Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net

DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet

48400000

USD

CY2011Q3

us-gaap

Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net

DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet

55200000

USD

us-gaap

Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net

DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet

19200000

USD

CY2010Q3

us-gaap

Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net

DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet

0

USD

us-gaap

Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net

DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet

0

USD

CY2011Q3

us-gaap

Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net

DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet

0

USD

us-gaap

Derivative Instruments Gain Loss Recognized In Income Ineffective Portion And Amount Excluded From Effectiveness Testing Net

DerivativeInstrumentsGainLossRecognizedInIncomeIneffectivePortionAndAmountExcludedFromEffectivenessTestingNet

0

USD

CY2010Q3

us-gaap

Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net

DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet

-42200000

USD

us-gaap

Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net

DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet

76300000

USD

CY2011Q3

us-gaap

Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net

DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet

59400000

USD

us-gaap

Derivative Instruments Gain Loss Recognized In Other Comprehensive Income Effective Portion Net

DerivativeInstrumentsGainLossRecognizedInOtherComprehensiveIncomeEffectivePortionNet

12900000

USD

CY2011Q3

us-gaap

Derivative Liabilities

DerivativeLiabilities

275400000

USD

CY2010Q4

us-gaap

Derivative Liabilities

DerivativeLiabilities

295900000

USD

CY2010Q4

us-gaap

Derivative Net Liability Position Aggregate Fair Value

DerivativeNetLiabilityPositionAggregateFairValue

199600000

USD

CY2011Q3

us-gaap

Derivative Net Liability Position Aggregate Fair Value

DerivativeNetLiabilityPositionAggregateFairValue

154700000

USD

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

2.01

CY2010Q3

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

0.68

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

2.16

CY2011Q3

us-gaap

Earnings Per Share Basic

EarningsPerShareBasic

0.69

CY2010Q3

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

0.68

CY2011Q3

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

0.69

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

2.00

us-gaap

Earnings Per Share Diluted

EarningsPerShareDiluted

2.15

us-gaap

Effect Of Exchange Rate On Cash And Cash Equivalents

EffectOfExchangeRateOnCashAndCashEquivalents

-100000

USD

us-gaap

Effect Of Exchange Rate On Cash And Cash Equivalents

EffectOfExchangeRateOnCashAndCashEquivalents

0

USD

CY2010Q3

us-gaap

Embedded Derivative Gain Loss On Embedded Derivative Net

EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet

1600000

USD

us-gaap

Embedded Derivative Gain Loss On Embedded Derivative Net

EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet

-3700000

USD

us-gaap

Embedded Derivative Gain Loss On Embedded Derivative Net

EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet

-24400000

USD

CY2011Q3

us-gaap

Embedded Derivative Gain Loss On Embedded Derivative Net

EmbeddedDerivativeGainLossOnEmbeddedDerivativeNet

-33700000

USD

CY2011Q3

us-gaap

Fair Value Level1 To Level2 Transfers Amount

FairValueLevel1ToLevel2TransfersAmount

3078100000

USD

us-gaap

Fair Value Level1 To Level2 Transfers Amount

FairValueLevel1ToLevel2TransfersAmount

2523500000

USD

CY2010Q3

us-gaap

Fair Value Level1 To Level2 Transfers Amount

FairValueLevel1ToLevel2TransfersAmount

2527500000

USD

us-gaap

Fair Value Level1 To Level2 Transfers Amount

FairValueLevel1ToLevel2TransfersAmount

1698400000

USD

CY2011Q3

us-gaap

Fair Value Level2 To Level1 Transfers Amount

FairValueLevel2ToLevel1TransfersAmount

2641000000

USD

us-gaap

Fair Value Level2 To Level1 Transfers Amount

FairValueLevel2ToLevel1TransfersAmount

3239800000

USD

us-gaap

Fair Value Level2 To Level1 Transfers Amount

FairValueLevel2ToLevel1TransfersAmount

3731600000

USD

CY2010Q3

us-gaap

Fair Value Level2 To Level1 Transfers Amount

FairValueLevel2ToLevel1TransfersAmount

3148400000

USD

CY2010Q3

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings

0

USD

CY2010Q3

us-gaap

Financing Receivable Allowance For Credit Losses Provisions

FinancingReceivableAllowanceForCreditLossesProvisions

400000

USD

us-gaap

Financing Receivable Allowance For Credit Losses Provisions

FinancingReceivableAllowanceForCreditLossesProvisions

900000

USD

CY2011Q3

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings

100000

USD

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings

-2800000

USD

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Earnings

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInEarnings

-2000000

USD

CY2011Q3

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome

9600000

USD

CY2010Q3

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome

18400000

USD

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome

58200000

USD

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Gain Loss Included In Other Comprehensive Income

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetGainLossIncludedInOtherComprehensiveIncome

21400000

USD

CY2011Q3

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

30000000

USD

CY2010Q3

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

20800000

USD

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

20800000

USD

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Purchases

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetPurchases

91100000

USD

CY2011Q3

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

29500000

USD

CY2010Q3

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

7400000

USD

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

54200000

USD

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Sales

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetSales

48300000

USD

CY2010Q3

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3

235700000

USD

CY2011Q3

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3

339800000

USD

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3

395900000

USD

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Into Level3

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersIntoLevel3

321100000

USD

CY2010Q3

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3

93300000

USD

CY2011Q3

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3

234600000

USD

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3

513000000

USD

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Transfers Out Of Level3

FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetTransfersOutOfLevel3

579900000

USD

CY2011Q3

us-gaap

Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset Value