$AON
Aon PLC Stock $aon

$aon Overview Financials Valuation SEC Filings Company Website

2017 Form 10-K Financial Statement

#000162828018001923 Filed on February 20, 2018

Income Statement

Concept	2017	2016 Q4	2016 Q3
Revenue	$9.998B	$2.650B	$2.201B
YoY Change	6.26%	-17.88%	-20.02%
Cost Of Revenue
YoY Change
Gross Profit
YoY Change
Gross Profit Margin
Selling, General & Admin	$8.042B	$1.930B	$1.752B
YoY Change	10.48%	-24.93%	-24.77%
% of Gross Profit
Research & Development
YoY Change
% of Gross Profit
Depreciation & Amortization	$187.0M	$84.00M	$39.00M
YoY Change	15.43%	-38.69%	-70.9%
% of Gross Profit
Operating Expenses	$8.553B	$2.014B	$1.833B
YoY Change	12.57%	-21.66%	-21.3%
Operating Profit	$1.065B	$463.0M	$368.0M
YoY Change	-41.19%	-29.42%	-13.0%
Interest Expense	$282.0M	-$56.00M	$70.00M
YoY Change	0.0%	-12.5%	-2.78%
% of Operating Profit	26.48%	-12.1%	19.02%
Other Income/Expense, Net	-$125.0M	-$173.0M	$10.00M
YoY Change	-8.76%	1230.77%	25.0%
Pretax Income	$685.0M	$405.0M	$309.0M
YoY Change	-51.11%	-42.31%	-12.22%
Income Tax	$250.0M	$21.00M	$25.00M
% Of Pretax Income	36.5%	5.19%	8.09%
Net Earnings	$1.263B	$459.0M	$326.0M
YoY Change	-11.68%	-15.0%	4.82%
Net Earnings / Revenue	12.63%	17.32%	14.81%
Basic Earnings Per Share	$4.74	$1.70	$1.19
Diluted Earnings Per Share	$4.70	$1.68	$1.18
COMMON SHARES
Basic Shares Outstanding	258.5M shares	263.1M shares	267.5M shares
Diluted Shares Outstanding	260.7M shares		269.6M shares

Balance Sheet

Concept	2017	2016 Q4	2016 Q3
SHORT-TERM ASSETS
Cash & Short-Term Investments	$1.285B	$716.0M	$946.0M
YoY Change	79.47%	-3.24%	20.82%
Cash & Equivalents	$756.0M	$426.0M	$483.0M
Short-Term Investments	$529.0M	$290.0M	$463.0M
Other Short-Term Assets	$9.800B	$247.0M	$424.0M
YoY Change	-4.15%	-24.92%	-41.76%
Inventory
Prepaid Expenses		$102.0M	$150.0M
Receivables	$2.478B	$2.106B	$2.391B
Other Receivables	$114.0M	$100.0M	$169.0M
Total Short-Term Assets	$13.68B	$13.15B	$12.47B
YoY Change	4.04%	-3.09%	-10.41%
LONG-TERM ASSETS
Property, Plant & Equipment	$564.0M	$550.0M	$738.0M
YoY Change	2.55%	-28.1%	-5.99%
Goodwill		$7.410B	$8.452B
YoY Change		4.84%	-1.39%
Intangibles		$2.888B	$3.057B
YoY Change		-9.72%	-6.68%
Long-Term Investments	$57.00M	$119.0M	$124.0M
YoY Change	-52.1%	-11.85%	-8.82%
Other Assets	$1.615B	$360.0M	$564.0M
YoY Change	-52.75%	-39.19%	-66.29%
Total Long-Term Assets	$12.41B	$550.0M	$12.78B
YoY Change	-7.86%	-95.78%	-3.8%
TOTAL ASSETS
Total Short-Term Assets	$13.68B	$13.15B	$12.47B
Total Long-Term Assets	$12.41B	$550.0M	$12.78B
Total Assets	$26.09B	$26.62B	$25.25B
YoY Change	-1.98%	-1.0%	-7.18%
SHORT-TERM LIABILITIES
YoY Change
Accounts Payable	$1.961B	$1.604B	$1.477B
YoY Change	22.26%	-9.48%	2.07%
Accrued Expenses
YoY Change
Deferred Revenue
YoY Change
Short-Term Debt	$0.00	$0.00	$0.00
YoY Change
Long-Term Debt Due	$299.0M	$336.0M	$250.0M
YoY Change	-11.01%	-40.21%	-81.16%
Total Short-Term Liabilities	$12.76B	$12.50B	$11.37B
YoY Change	2.08%	-4.51%	-16.06%
LONG-TERM LIABILITIES
Long-Term Debt	$5.820B	$5.869B	$5.910B
YoY Change	-3.08%	14.23%	23.15%
Other Long-Term Liabilities	$2.738B	$719.0M	$759.0M
YoY Change	10.31%	-6.5%	-30.43%
Total Long-Term Liabilities	$8.558B	$6.588B	$6.669B
YoY Change	0.84%	11.53%	13.23%
TOTAL LIABILITIES
Total Short-Term Liabilities	$12.76B	$12.50B	$11.37B
Total Long-Term Liabilities	$8.558B	$6.588B	$6.669B
Total Liabilities	$21.51B	$21.08B	$19.76B
YoY Change	1.73%	1.24%	-7.08%
SHAREHOLDERS EQUITY
Retained Earnings		$3.807B	$3.702B
YoY Change		-5.13%	-7.8%
Common Stock		$5.580B	$5.525B
YoY Change		3.1%	3.83%
Preferred Stock
YoY Change
Treasury Stock (at cost)
YoY Change
Treasury Stock Shares
Shareholders Equity	$4.583B	$5.475B	$5.434B
YoY Change
Total Liabilities & Shareholders Equity	$26.09B	$26.62B	$25.25B
YoY Change	-1.98%	-1.0%	-7.18%

Cashflow Statement

Concept	2017	2016 Q4	2016 Q3
OPERATING ACTIVITIES
Net Income	$1.263B	$459.0M	$326.0M
YoY Change	-11.68%	-15.0%	4.82%
Depreciation, Depletion And Amortization	$187.0M	$84.00M	$39.00M
YoY Change	15.43%	-38.69%	-70.9%
Cash From Operating Activities	$734.0M	$851.0M	$711.0M
YoY Change	-68.44%	19.19%	-0.84%
INVESTING ACTIVITIES
Capital Expenditures	$183.0M	-$49.00M	-$39.00M
YoY Change	17.31%	-24.62%	-53.01%
Acquisitions	$1.029B
YoY Change	17.06%
Other Investing Activities	$2.970B	-$534.0M	-$248.0M
YoY Change	-472.18%	-572.57%	-353.06%
Cash From Investing Activities	$2.787B	-$583.0M	-$287.0M
YoY Change	-392.14%	-1314.58%	-2013.33%
FINANCING ACTIVITIES
Cash Dividend Paid
YoY Change
Common Stock Issuance & Retirement, Net	$2.399B
YoY Change	90.85%
Debt Paid & Issued, Net	$1.999B
YoY Change	-32.12%
Cash From Financing Activities	-$3.265B	-271.0M	-371.0M
YoY Change	153.89%	-64.3%	-37.01%
NET CHANGE
Cash From Operating Activities	$734.0M	851.0M	711.0M
Cash From Investing Activities	$2.787B	-583.0M	-287.0M
Cash From Financing Activities	-$3.265B	-271.0M	-371.0M
Net Change In Cash	$325.0M	-3.000M	53.00M
YoY Change	277.91%	-200.0%	-62.94%
FREE CASH FLOW
Cash From Operating Activities	$734.0M	$851.0M	$711.0M
Capital Expenditures	$183.0M	-$49.00M	-$39.00M
Free Cash Flow	$551.0M	$900.0M	$750.0M
YoY Change	-74.61%	15.53%	-6.25%

Facts In Submission

Frame	Concept Type	Concept / XBRL Key	Value	Unit
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CY2017Q4	aon	Deferred Tax Assets Lease Guarantees DeferredTaxAssetsLeaseGuarantees	6000000	USD
CY2016Q4	aon	Deferred Tax Assets Net Operating And Capital Loss Carryforwards And Tax Credit Carryforwards DeferredTaxAssetsNetOperatingAndCapitalLossCarryforwardsAndTaxCreditCarryforwards	398000000	USD
CY2017Q4	aon	Deferred Tax Assets Net Operating And Capital Loss Carryforwards And Tax Credit Carryforwards DeferredTaxAssetsNetOperatingAndCapitalLossCarryforwardsAndTaxCreditCarryforwards	362000000	USD
CY2016Q4	aon	Deferred Tax Assets Tax Deferred Expense Reservesand Accruals Accrued Interest DeferredTaxAssetsTaxDeferredExpenseReservesandAccrualsAccruedInterest	166000000	USD
CY2017Q2	aon	Brand Transition Period BrandTransitionPeriod	P3Y
CY2016Q4	aon	Cashand Cash Equivalentsand Short Term Investments CashandCashEquivalentsandShortTermInvestments	716000000	USD
CY2017Q4	aon	Cashand Cash Equivalentsand Short Term Investments CashandCashEquivalentsandShortTermInvestments	1285000000	USD
CY2017	aon	Debt Number Of Committed Credit Facilities DebtNumberOfCommittedCreditFacilities	2	credit_facility
CY2016Q4	aon	Deferred Tax Assets Brokerage Fee Arrangements DeferredTaxAssetsBrokerageFeeArrangements	66000000	USD
CY2017Q4	aon	Deferred Tax Assets Brokerage Fee Arrangements DeferredTaxAssetsBrokerageFeeArrangements	4000000	USD
CY2017Q4	aon	Deferred Tax Assets Tax Deferred Expense Reservesand Accruals Accrued Interest DeferredTaxAssetsTaxDeferredExpenseReservesandAccrualsAccruedInterest	1000000	USD
CY2016Q4	aon	Deferred Tax Liabilities Intangible Assets And Property Plant And Equipment DeferredTaxLiabilitiesIntangibleAssetsAndPropertyPlantAndEquipment	978000000	USD
CY2017Q4	aon	Deferred Tax Liabilities Intangible Assets And Property Plant And Equipment DeferredTaxLiabilitiesIntangibleAssetsAndPropertyPlantAndEquipment	436000000	USD
CY2016Q4	aon	Deferred Tax Liabilities Other Accrued Expenses DeferredTaxLiabilitiesOtherAccruedExpenses	101000000	USD
CY2017Q4	aon	Deferred Tax Liabilities Other Accrued Expenses DeferredTaxLiabilitiesOtherAccruedExpenses	12000000	USD
CY2017Q4	aon	Defined Benefit Plan Percentage Of Total Pension Obligations DefinedBenefitPlanPercentageOfTotalPensionObligations	0.92
CY2015	aon	Disposal Group Including Discontinued Operation Gain Loss From Disposal DisposalGroupIncludingDiscontinuedOperationGainLossFromDisposal	81000000	USD
CY2016	aon	Disposal Group Including Discontinued Operation Gain Loss From Disposal DisposalGroupIncludingDiscontinuedOperationGainLossFromDisposal	39000000	USD
CY2017	aon	Disposal Group Including Discontinued Operation Gain Loss From Disposal DisposalGroupIncludingDiscontinuedOperationGainLossFromDisposal	-16000000	USD
CY2016Q4	aon	Distributable Reserves Available Amount DistributableReservesAvailableAmount	1600000000	USD
CY2017Q4	aon	Distributable Reserves Available Amount DistributableReservesAvailableAmount	1200000000	USD
CY2015	aon	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0.000
CY2016	aon	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0.000
CY2017	aon	Effective Income Tax Rate Reconciliation Tax Cuts And Jobs Act Of2017 Percent EffectiveIncomeTaxRateReconciliationTaxCutsAndJobsActOf2017Percent	0.512
CY2017	aon	Effective Income Tax Reconciliation Sharebased Compensation Excess Tax Benefit Amount EffectiveIncomeTaxReconciliationSharebasedCompensationExcessTaxBenefitAmount	54000000	USD
CY2016Q4	aon	Employeerelated Liabilities Noncurrent EmployeerelatedLiabilitiesNoncurrent	56000000	USD
CY2017Q4	aon	Employeerelated Liabilities Noncurrent EmployeerelatedLiabilitiesNoncurrent	67000000	USD
CY2015	aon	Equity Earnings From Subsidiaries EquityEarningsFromSubsidiaries	0	USD
CY2016	aon	Equity Earnings From Subsidiaries EquityEarningsFromSubsidiaries	0	USD
CY2017	aon	Equity Earnings From Subsidiaries EquityEarningsFromSubsidiaries	0	USD
CY2015	aon	Equity Other Comprehensive Income Loss From Subsidiaries EquityOtherComprehensiveIncomeLossFromSubsidiaries	0	USD
CY2016	aon	Equity Other Comprehensive Income Loss From Subsidiaries EquityOtherComprehensiveIncomeLossFromSubsidiaries	0	USD
CY2017	aon	Equity Other Comprehensive Income Loss From Subsidiaries EquityOtherComprehensiveIncomeLossFromSubsidiaries	0	USD
CY2016Q4	aon	Fiduciary Assets FiduciaryAssets	8959000000	USD
CY2017Q4	aon	Fiduciary Assets FiduciaryAssets	9625000000	USD
CY2016Q4	aon	Fiduciary Assets Premium Trust Balances FiduciaryAssetsPremiumTrustBalances	3300000000	USD
CY2017Q4	aon	Fiduciary Assets Premium Trust Balances FiduciaryAssetsPremiumTrustBalances	3700000000	USD
CY2016Q4	aon	Fiduciary Liabilities FiduciaryLiabilities	1604000000	USD
CY2017Q4	aon	Fiduciary Liabilities FiduciaryLiabilities	1961000000	USD
CY2017Q4	aon	Hedge Gain Loss To Be Reclassified During Next12 Months HedgeGainLossToBeReclassifiedDuringNext12Months	-9000000	USD
CY2015	aon	Income Loss Before Equity Earnings Of Subsidiaries IncomeLossBeforeEquityEarningsOfSubsidiaries	1422000000	USD
CY2016	aon	Income Loss Before Equity Earnings Of Subsidiaries IncomeLossBeforeEquityEarningsOfSubsidiaries	1430000000	USD
CY2017	aon	Income Loss Before Equity Earnings Of Subsidiaries IncomeLossBeforeEquityEarningsOfSubsidiaries	1263000000	USD
CY2015	aon	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	1428000000	USD
CY2016	aon	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	1401000000	USD
CY2017	aon	Income Loss From Continuing Operations Before Income Taxes IncomeLossFromContinuingOperationsBeforeIncomeTaxes	685000000	USD
CY2015	aon	Income Tax Holiday Income Tax Benefits IncomeTaxHolidayIncomeTaxBenefits	23000000	USD
CY2016	aon	Income Tax Holiday Income Tax Benefits IncomeTaxHolidayIncomeTaxBenefits	46000000	USD
CY2017	aon	Income Tax Holiday Income Tax Benefits IncomeTaxHolidayIncomeTaxBenefits	45000000	USD
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CY2016	aon	Increase Decrease In Fiduciary Liabilities IncreaseDecreaseInFiduciaryLiabilities	-55000000	USD
CY2017	aon	Increase Decrease In Fiduciary Liabilities IncreaseDecreaseInFiduciaryLiabilities	-36000000	USD
CY2015	aon	Increase Decrease In Fiduciary Receivables IncreaseDecreaseInFiduciaryReceivables	-599000000	USD
CY2016	aon	Increase Decrease In Fiduciary Receivables IncreaseDecreaseInFiduciaryReceivables	-595000000	USD
CY2017	aon	Increase Decrease In Fiduciary Receivables IncreaseDecreaseInFiduciaryReceivables	-171000000	USD
CY2015	aon	Intercompany Interest Expense Income IntercompanyInterestExpenseIncome	0	USD
CY2016	aon	Intercompany Interest Expense Income IntercompanyInterestExpenseIncome	0	USD
CY2017	aon	Intercompany Interest Expense Income IntercompanyInterestExpenseIncome	0	USD
CY2015	aon	Intercompany Other Income Expense Net IntercompanyOtherIncomeExpenseNet	0	USD
CY2016	aon	Intercompany Other Income Expense Net IntercompanyOtherIncomeExpenseNet	0	USD
CY2017	aon	Intercompany Other Income Expense Net IntercompanyOtherIncomeExpenseNet	0	USD
CY2016Q4	aon	Investments In Subsidiaries InvestmentsInSubsidiaries	0	USD
CY2017Q4	aon	Investments In Subsidiaries InvestmentsInSubsidiaries	0	USD
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CY2017	aon	Numberof Revenue Lines NumberofRevenueLines	5	revenue_line
CY2017Q4	aon	Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals After Year Five OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsAfterYearFive	18000000	USD
CY2017Q4	aon	Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals Year Five OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsYearFive	34000000	USD
CY2017Q4	aon	Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals Year Four OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsYearFour	34000000	USD
CY2017Q4	aon	Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals Year Three OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentalsYearThree	35000000	USD
CY2017Q4	aon	Operating Leases Future Minimum Payments Due Future Sublease Rentalsnexttwelvemonths OperatingLeasesFutureMinimumPaymentsDueFutureSubleaseRentalsnexttwelvemonths	41000000	USD
CY2017Q4	aon	Operating Leases Future Minimum Payments Due Net Of Sublease Rental Income Current OperatingLeasesFutureMinimumPaymentsDueNetOfSubleaseRentalIncomeCurrent	277000000	USD
CY2017Q4	aon	Operating Leases Future Minimum Payments Due Year Two OperatingLeasesFutureMinimumPaymentsDueYearTwo	42000000	USD
CY2017Q4	aon	Operating Leases Future Minimum Payments Net Of Sublease Rental Income Due OperatingLeasesFutureMinimumPaymentsNetOfSubleaseRentalIncomeDue	1716000000	USD
CY2017Q4	aon	Operating Leases Future Minimum Payments Net Of Sublease Rental Income Due In Five Years OperatingLeasesFutureMinimumPaymentsNetOfSubleaseRentalIncomeDueInFiveYears	171000000	USD
CY2017Q4	aon	Operating Leases Future Minimum Payments Net Of Sublease Rental Income Due In Four Years OperatingLeasesFutureMinimumPaymentsNetOfSubleaseRentalIncomeDueInFourYears	192000000	USD
CY2017Q4	aon	Operating Leases Future Minimum Payments Net Of Sublease Rental Income Due In Three Years OperatingLeasesFutureMinimumPaymentsNetOfSubleaseRentalIncomeDueInThreeYears	214000000	USD
CY2017Q4	aon	Operating Leases Future Minimum Payments Net Of Sublease Rental Income Due Thereafter OperatingLeasesFutureMinimumPaymentsNetOfSubleaseRentalIncomeDueThereafter	613000000	USD
CY2017Q4	aon	Operating Leases Future Minimum Payments Net Of Sublease Rentals Due In Two Years OperatingLeasesFutureMinimumPaymentsNetOfSubleaseRentalsDueInTwoYears	249000000	USD
CY2016	aon	Payments For Proceeds From Marketable Securities PaymentsForProceedsFromMarketableSecurities	-61000000	USD
CY2015	aon	Other General Expenses OtherGeneralExpenses	1200000000	USD
CY2016	aon	Other General Expenses OtherGeneralExpenses	1036000000	USD
CY2017	aon	Other General Expenses OtherGeneralExpenses	1272000000	USD
CY2016Q4	aon	Other Tax Assets Current OtherTaxAssetsCurrent	100000000	USD
CY2017Q4	aon	Other Tax Assets Current OtherTaxAssetsCurrent	114000000	USD
CY2016Q4	aon	Other Tax Assets Noncurrent OtherTaxAssetsNoncurrent	82000000	USD
CY2017Q4	aon	Other Tax Assets Noncurrent OtherTaxAssetsNoncurrent	84000000	USD
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CY2016	aon	Treasury Stock Acquired Additional Transaction Costs TreasuryStockAcquiredAdditionalTransactionCosts	6000000	USD
CY2017	aon	Treasury Stock Acquired Additional Transaction Costs TreasuryStockAcquiredAdditionalTransactionCosts	12000000	USD
CY2017	dei	Amendment Flag AmendmentFlag	false
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CY2017	dei	Document Fiscal Period Focus DocumentFiscalPeriodFocus	FY
CY2017	dei	Document Fiscal Year Focus DocumentFiscalYearFocus	2017
CY2017	dei	Document Period End Date DocumentPeriodEndDate	2017-12-31
CY2017	dei	Document Type DocumentType	10-K
CY2017	dei	Entity Central Index Key EntityCentralIndexKey	0000315293
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CY2017	dei	Entity Current Reporting Status EntityCurrentReportingStatus	Yes
CY2017	dei	Entity Filer Category EntityFilerCategory	Large Accelerated Filer
CY2017Q2	dei	Entity Public Float EntityPublicFloat	34061029792	USD
CY2017	dei	Entity Registrant Name EntityRegistrantName	Aon plc
CY2017	dei	Entity Voluntary Filers EntityVoluntaryFilers	No
CY2017	dei	Entity Well Known Seasoned Issuer EntityWellKnownSeasonedIssuer	Yes
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CY2017Q4	us-gaap	Accrued Income Taxes Current AccruedIncomeTaxesCurrent	139000000	USD
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CY2016Q4	us-gaap	Accumulated Depreciation Depletion And Amortization Property Plant And Equipment AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment	1196000000	USD
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CY2016	us-gaap	Adjustment For Amortization AdjustmentForAmortization	157000000	USD
CY2017	us-gaap	Adjustment For Amortization AdjustmentForAmortization	704000000	USD
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CY2016	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	331000000	USD
CY2017	us-gaap	Adjustments To Additional Paid In Capital Sharebased Compensation Requisite Service Period Recognition Value AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationRequisiteServicePeriodRecognitionValue	321000000	USD
CY2015	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	318000000	USD
CY2016	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	306000000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense AllocatedShareBasedCompensationExpense	319000000	USD
CY2015	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	231000000	USD
CY2016	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	216000000	USD
CY2017	us-gaap	Allocated Share Based Compensation Expense Net Of Tax AllocatedShareBasedCompensationExpenseNetOfTax	246000000	USD
CY2014Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	72000000	USD
CY2015Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	58000000	USD
CY2016Q4	us-gaap	Allowance For Doubtful Accounts Receivable Current AllowanceForDoubtfulAccountsReceivableCurrent	56000000	USD
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CY2017Q4	us-gaap	Assets Noncurrent AssetsNoncurrent	564000000	USD
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CY2015	us-gaap	Availableforsale Securities Gross Unrealized Gain Loss1 AvailableforsaleSecuritiesGrossUnrealizedGainLoss1	0	USD
CY2016	us-gaap	Availableforsale Securities Gross Unrealized Gain Loss1 AvailableforsaleSecuritiesGrossUnrealizedGainLoss1	0	USD
CY2017	us-gaap	Availableforsale Securities Gross Unrealized Gain Loss1 AvailableforsaleSecuritiesGrossUnrealizedGainLoss1	0	USD
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CY2016	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0	USD
CY2017	us-gaap	Cash Provided By Used In Financing Activities Discontinued Operations CashProvidedByUsedInFinancingActivitiesDiscontinuedOperations	0	USD
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CY2016	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-66000000	USD
CY2017	us-gaap	Cash Provided By Used In Investing Activities Discontinued Operations CashProvidedByUsedInInvestingActivitiesDiscontinuedOperations	-19000000	USD
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CY2017	us-gaap	Cash Provided By Used In Operating Activities Discontinued Operations CashProvidedByUsedInOperatingActivitiesDiscontinuedOperations	65000000	USD
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CY2017	us-gaap	Common Stock Dividends Per Share Cash Paid CommonStockDividendsPerShareCashPaid	1.41
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CY2017Q4	us-gaap	Common Stock Par Or Stated Value Per Share CommonStockParOrStatedValuePerShare	0.01
CY2016Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000	shares
CY2017Q4	us-gaap	Common Stock Shares Authorized CommonStockSharesAuthorized	750000000	shares
CY2016Q4	us-gaap	Common Stock Shares Issued CommonStockSharesIssued	262000000	shares
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CY2017Q4	us-gaap	Common Stock Value CommonStockValue	2000000	USD
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CY2017	us-gaap	Comprehensive Income Net Of Tax ComprehensiveIncomeNetOfTax	1642000000	USD
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CY2016	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	248000000	USD
CY2017	us-gaap	Current Income Tax Expense Benefit CurrentIncomeTaxExpenseBenefit	268000000	USD
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CY2016Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	325000000	USD
CY2017Q4	us-gaap	Deferred Income Tax Assets Net DeferredIncomeTaxAssetsNet	389000000	USD
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CY2017Q4	us-gaap	Deferred Tax Assets Investments DeferredTaxAssetsInvestments	35000000	USD
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CY2017Q4	us-gaap	Deferred Tax Assets Other DeferredTaxAssetsOther	48000000	USD
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CY2017Q4	us-gaap	Deferred Tax Assets Valuation Allowance DeferredTaxAssetsValuationAllowance	136000000	USD
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CY2017	us-gaap	Derivative Instruments Gain Loss Reclassified From Accumulated Oci Into Income Effective Portion Net DerivativeInstrumentsGainLossReclassifiedFromAccumulatedOCIIntoIncomeEffectivePortionNet	-1000000	USD
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CY2017	us-gaap	Earnings Per Share Diluted EarningsPerShareDiluted	4.70
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CY2017	us-gaap	Employee Service Share Based Compensation Nonvested Awards Total Compensation Cost Not Yet Recognized Period For Recognition1 EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognizedPeriodForRecognition1	P2Y1M0D
CY2015	us-gaap	Employee Service Share Based Compensation Tax Benefit From Compensation Expense EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense	87000000	USD
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CY2016Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	1507000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Accumulated Amortization FiniteLivedIntangibleAssetsAccumulatedAmortization	2280000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense After Year Five FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive	412000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Next Twelve Months FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths	410000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Five FiniteLivedIntangibleAssetsAmortizationExpenseYearFive	98000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Four FiniteLivedIntangibleAssetsAmortizationExpenseYearFour	140000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Three FiniteLivedIntangibleAssetsAmortizationExpenseYearThree	253000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Amortization Expense Year Two FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo	420000000	USD
CY2016Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	3397000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Gross FiniteLivedIntangibleAssetsGross	4013000000	USD
CY2017Q4	us-gaap	Finite Lived Intangible Assets Net FiniteLivedIntangibleAssetsNet	1733000000	USD
CY2015	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	30000000	USD
CY2016	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-2000000	USD
CY2017	us-gaap	Foreign Currency Transaction Gain Loss Before Tax ForeignCurrencyTransactionGainLossBeforeTax	-37000000	USD
CY2015Q4	us-gaap	Goodwill Goodwill	7068000000	USD
CY2016Q4	us-gaap	Goodwill Goodwill	7410000000	USD
CY2017Q4	us-gaap	Goodwill Goodwill	8358000000	USD
CY2016	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	642000000	USD
CY2017	us-gaap	Goodwill Acquired During Period GoodwillAcquiredDuringPeriod	619000000	USD
CY2016	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	-270000000	USD
CY2017	us-gaap	Goodwill Foreign Currency Translation Gain Loss GoodwillForeignCurrencyTranslationGainLoss	347000000	USD
CY2016	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	4000000	USD
CY2017	us-gaap	Goodwill Purchase Accounting Adjustments GoodwillPurchaseAccountingAdjustments	-13000000	USD
CY2016	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	34000000	USD
CY2017	us-gaap	Goodwill Written Off Related To Sale Of Business Unit GoodwillWrittenOffRelatedToSaleOfBusinessUnit	5000000	USD
CY2017Q4	us-gaap	Guarantee Obligations Maximum Exposure GuaranteeObligationsMaximumExposure	95000000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1428000000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	1401000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments	685000000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1253000000	USD
CY2016Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	312000000	USD
CY2016Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	273000000	USD
CY2016Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	284000000	USD
CY2017	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	435000000	USD
CY2016Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	384000000	USD
CY2016	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	1253000000	USD
CY2017Q1	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	265000000	USD
CY2017Q2	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	-43000000	USD
CY2017Q3	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	196000000	USD
CY2017Q4	us-gaap	Income Loss From Continuing Operations Including Portion Attributable To Noncontrolling Interest IncomeLossFromContinuingOperationsIncludingPortionAttributableToNoncontrollingInterest	17000000	USD
CY2015	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.33
CY2016Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.11
CY2016Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.99
CY2016Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.03
CY2016Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.42
CY2016	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	4.55
CY2017Q1	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.95
CY2017Q2	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	-0.20
CY2017Q3	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.74
CY2017Q4	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	0.04
CY2017	us-gaap	Income Loss From Continuing Operations Per Basic Share IncomeLossFromContinuingOperationsPerBasicShare	1.54
CY2015	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.28
CY2016Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.10
CY2016Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.98
CY2016Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.03
CY2016Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.40
CY2016	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	4.51
CY2017Q1	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.94
CY2017Q2	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	-0.20
CY2017Q3	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.73
CY2017Q4	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	0.04
CY2017	us-gaap	Income Loss From Continuing Operations Per Diluted Share IncomeLossFromContinuingOperationsPerDilutedShare	1.53
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	169000000	USD
CY2016Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	25000000	USD
CY2016Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	35000000	USD
CY2016Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	42000000	USD
CY2016Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	75000000	USD
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	177000000	USD
CY2017Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	40000000	USD
CY2017Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	821000000	USD
CY2017Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-4000000	USD
CY2017Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	-29000000	USD
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax IncomeLossFromDiscontinuedOperationsNetOfTax	828000000	USD
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.60
CY2016Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.09
CY2016Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.13
CY2016Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.16
CY2016Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.28
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.66
CY2017Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	0.15
CY2017Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	3.13
CY2017Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.02
CY2017Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	-0.12
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Basic Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerBasicShare	3.20
CY2015	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.60
CY2016Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.09
CY2016Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.13
CY2016Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.15
CY2016Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.28
CY2016	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.65
CY2017Q1	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	0.15
CY2017Q2	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	3.13
CY2017Q3	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.01
CY2017Q4	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	-0.11
CY2017	us-gaap	Income Loss From Discontinued Operations Net Of Tax Per Diluted Share IncomeLossFromDiscontinuedOperationsNetOfTaxPerDilutedShare	3.17
CY2015	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	13000000	USD
CY2016	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	13000000	USD
CY2017	us-gaap	Income Loss From Equity Method Investments IncomeLossFromEquityMethodInvestments	12000000	USD
CY2015	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	175000000	USD
CY2016	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	148000000	USD
CY2017	us-gaap	Income Tax Expense Benefit IncomeTaxExpenseBenefit	250000000	USD
CY2015	us-gaap	Income Tax Holiday Income Tax Benefits Per Share IncomeTaxHolidayIncomeTaxBenefitsPerShare	0.08
CY2016	us-gaap	Income Tax Holiday Income Tax Benefits Per Share IncomeTaxHolidayIncomeTaxBenefitsPerShare	0.17
CY2017	us-gaap	Income Tax Holiday Income Tax Benefits Per Share IncomeTaxHolidayIncomeTaxBenefitsPerShare	0.17
CY2015	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	249000000	USD
CY2016	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	218000000	USD
CY2017	us-gaap	Income Taxes Paid Net IncomeTaxesPaidNet	1182000000	USD
CY2015	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	88000000	USD
CY2016	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	53000000	USD
CY2017	us-gaap	Increase Decrease In Accounts Payable And Accrued Liabilities IncreaseDecreaseInAccountsPayableAndAccruedLiabilities	96000000	USD
CY2015	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	24000000	USD
CY2016	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-42000000	USD
CY2017	us-gaap	Increase Decrease In Accrued Income Taxes Payable IncreaseDecreaseInAccruedIncomeTaxesPayable	-914000000	USD
CY2015	us-gaap	Increase Decrease In Client Funds Held IncreaseDecreaseInClientFundsHeld	-206000000	USD
CY2016	us-gaap	Increase Decrease In Client Funds Held IncreaseDecreaseInClientFundsHeld	540000000	USD
CY2017	us-gaap	Increase Decrease In Client Funds Held IncreaseDecreaseInClientFundsHeld	135000000	USD
CY2015	us-gaap	Increase Decrease In Due To Affiliates IncreaseDecreaseInDueToAffiliates	0	USD
CY2016	us-gaap	Increase Decrease In Due To Affiliates IncreaseDecreaseInDueToAffiliates	0	USD
CY2017	us-gaap	Increase Decrease In Due To Affiliates IncreaseDecreaseInDueToAffiliates	0	USD
CY2015	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-110000000	USD
CY2016	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	-66000000	USD
CY2017	us-gaap	Increase Decrease In Other Operating Capital Net IncreaseDecreaseInOtherOperatingCapitalNet	8000000	USD
CY2015	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-230000000	USD
CY2016	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	42000000	USD
CY2017	us-gaap	Increase Decrease In Pension And Postretirement Obligations IncreaseDecreaseInPensionAndPostretirementObligations	-66000000	USD
CY2015	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	97000000	USD
CY2016	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	105000000	USD
CY2017	us-gaap	Increase Decrease In Receivables IncreaseDecreaseInReceivables	254000000	USD
CY2015	us-gaap	Increase Decrease In Restructuring Reserve IncreaseDecreaseInRestructuringReserve	0	USD
CY2016	us-gaap	Increase Decrease In Restructuring Reserve IncreaseDecreaseInRestructuringReserve	0	USD
CY2017	us-gaap	Increase Decrease In Restructuring Reserve IncreaseDecreaseInRestructuringReserve	172000000	USD
CY2015	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	3000000	shares
CY2016	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2200000	shares
CY2017	us-gaap	Incremental Common Shares Attributable To Share Based Payment Arrangements IncrementalCommonSharesAttributableToShareBasedPaymentArrangements	2200000	shares
CY2015	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	389000000	USD
CY2016	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	386000000	USD
CY2017	us-gaap	Information Technology And Data Processing InformationTechnologyAndDataProcessing	419000000	USD
CY2016Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1890000000	USD
CY2017Q4	us-gaap	Intangible Assets Net Excluding Goodwill IntangibleAssetsNetExcludingGoodwill	1733000000	USD
CY2015	us-gaap	Interest Expense InterestExpense	273000000	USD
CY2016	us-gaap	Interest Expense InterestExpense	282000000	USD
CY2017	us-gaap	Interest Expense InterestExpense	282000000	USD
CY2015	us-gaap	Interest Paid InterestPaid	254000000	USD
CY2016	us-gaap	Interest Paid InterestPaid	272000000	USD
CY2017	us-gaap	Interest Paid InterestPaid	272000000	USD
CY2015	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	14000000	USD
CY2016	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	9000000	USD
CY2017	us-gaap	Investment Income Interest And Dividend InvestmentIncomeInterestAndDividend	27000000	USD
CY2015	us-gaap	Labor And Related Expense LaborAndRelatedExpense	5605000000	USD
CY2016	us-gaap	Labor And Related Expense LaborAndRelatedExpense	5687000000	USD
CY2017	us-gaap	Labor And Related Expense LaborAndRelatedExpense	6089000000	USD
CY2015	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	413000000	USD
CY2016	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	358000000	USD
CY2017	us-gaap	Lease And Rental Expense LeaseAndRentalExpense	377000000	USD
CY2016Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	90000000	USD
CY2017Q4	us-gaap	Letters Of Credit Outstanding Amount LettersOfCreditOutstandingAmount	96000000	USD
CY2016Q4	us-gaap	Liabilities Liabilities	21083000000	USD
CY2017Q4	us-gaap	Liabilities Liabilities	21440000000	USD
CY2016Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	26615000000	USD
CY2017Q4	us-gaap	Liabilities And Stockholders Equity LiabilitiesAndStockholdersEquity	26088000000	USD
CY2016Q4	us-gaap	Liabilities Current LiabilitiesCurrent	12495000000	USD
CY2017Q4	us-gaap	Liabilities Current LiabilitiesCurrent	12755000000	USD
CY2016Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	940000000	USD
CY2017Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Current LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationCurrent	0	USD
CY2016Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Noncurrent LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	139000000	USD
CY2017Q4	us-gaap	Liabilities Of Disposal Group Including Discontinued Operation Noncurrent LiabilitiesOfDisposalGroupIncludingDiscontinuedOperationNoncurrent	0	USD
CY2017Q4	us-gaap	Long Term Debt LongTermDebt	5966000000	USD
CY2016Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	6264000000	USD
CY2017Q4	us-gaap	Long Term Debt Fair Value LongTermDebtFairValue	6267000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal After Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive	4770000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Next Twelve Months LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths	299000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Five LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive	0	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Four LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour	400000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Three LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree	600000000	USD
CY2017Q4	us-gaap	Long Term Debt Maturities Repayments Of Principal In Year Two LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo	0	USD
CY2016Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	5869000000	USD
CY2017Q4	us-gaap	Long Term Debt Noncurrent LongTermDebtNoncurrent	5667000000	USD
CY2016Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7000000	USD
CY2016Q4	us-gaap	Long Term Investments LongTermInvestments	119000000	USD
CY2017Q4	us-gaap	Long Term Investments LongTermInvestments	57000000	USD
CY2016Q4	us-gaap	Minority Interest MinorityInterest	57000000	USD
CY2017Q4	us-gaap	Minority Interest MinorityInterest	65000000	USD
CY2015	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	27000000	USD
CY2016	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	28000000	USD
CY2017	us-gaap	Minority Interest Decrease From Distributions To Noncontrolling Interest Holders MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders	27000000	USD
CY2015	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	6000000	USD
CY2016	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	38000000	USD
CY2017	us-gaap	Minority Interest Decrease From Redemptions MinorityInterestDecreaseFromRedemptions	11000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1689000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-1286000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities NetCashProvidedByUsedInFinancingActivities	-3265000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-1689000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-1286000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Financing Activities Continuing Operations NetCashProvidedByUsedInFinancingActivitiesContinuingOperations	-3265000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-138000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	-954000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities NetCashProvidedByUsedInInvestingActivities	2787000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-48000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	-888000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Investing Activities Continuing Operations NetCashProvidedByUsedInInvestingActivitiesContinuingOperations	2806000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2009000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	2326000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities NetCashProvidedByUsedInOperatingActivities	734000000	USD
CY2015	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	1502000000	USD
CY2016	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	1829000000	USD
CY2017	us-gaap	Net Cash Provided By Used In Operating Activities Continuing Operations NetCashProvidedByUsedInOperatingActivitiesContinuingOperations	669000000	USD
CY2015	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	37000000	USD
CY2016Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	12000000	USD
CY2016Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	8000000	USD
CY2016Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7000000	USD
CY2016	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	34000000	USD
CY2017Q1	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	14000000	USD
CY2017Q2	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	9000000	USD
CY2017Q3	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7000000	USD
CY2017Q4	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	7000000	USD
CY2017	us-gaap	Net Income Loss Attributable To Noncontrolling Interest NetIncomeLossAttributableToNoncontrollingInterest	37000000	USD
CY2015	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1385000000	USD
CY2016Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	325000000	USD
CY2016Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	300000000	USD
CY2016Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	319000000	USD
CY2016Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	452000000	USD
CY2016	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1396000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax	-8000000	USD
CY2017Q1	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	291000000	USD
CY2017Q2	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	769000000	USD
CY2017Q3	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	185000000	USD
CY2017Q4	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	-19000000	USD
CY2017	us-gaap	Net Income Loss Available To Common Stockholders Basic NetIncomeLossAvailableToCommonStockholdersBasic	1226000000	USD
CY2015	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	100000000	USD
CY2016	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	36000000	USD
CY2017	us-gaap	Nonoperating Income Expense NonoperatingIncomeExpense	-39000000	USD
CY2016	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	8	acquisition
CY2017	us-gaap	Number Of Businesses Acquired NumberOfBusinessesAcquired	17	acquisition
	us-gaap	Number Of Operating Segments NumberOfOperatingSegments	1	segment
CY2017	us-gaap	Number Of Reportable Segments NumberOfReportableSegments	1	segment
CY2015	us-gaap	Occupancy Net OccupancyNet	362000000	USD
CY2016	us-gaap	Occupancy Net OccupancyNet	343000000	USD
CY2017	us-gaap	Occupancy Net OccupancyNet	348000000	USD
CY2015	us-gaap	Operating Income Loss OperatingIncomeLoss	1587000000	USD
CY2016Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	420000000	USD
CY2016Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	387000000	USD
CY2016Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	368000000	USD
CY2016Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	463000000	USD
CY2016	us-gaap	Operating Income Loss OperatingIncomeLoss	1638000000	USD
CY2017Q1	us-gaap	Operating Income Loss OperatingIncomeLoss	343000000	USD
CY2017Q2	us-gaap	Operating Income Loss OperatingIncomeLoss	-118000000	USD
CY2017Q3	us-gaap	Operating Income Loss OperatingIncomeLoss	265000000	USD
CY2017Q4	us-gaap	Operating Income Loss OperatingIncomeLoss	489000000	USD
CY2017	us-gaap	Operating Income Loss OperatingIncomeLoss	979000000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due OperatingLeasesFutureMinimumPaymentsDue	1920000000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Current OperatingLeasesFutureMinimumPaymentsDueCurrent	318000000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Future Minimum Sublease Rentals OperatingLeasesFutureMinimumPaymentsDueFutureMinimumSubleaseRentals	204000000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Five Years OperatingLeasesFutureMinimumPaymentsDueInFiveYears	205000000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Four Years OperatingLeasesFutureMinimumPaymentsDueInFourYears	226000000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Three Years OperatingLeasesFutureMinimumPaymentsDueInThreeYears	249000000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due In Two Years OperatingLeasesFutureMinimumPaymentsDueInTwoYears	291000000	USD
CY2017Q4	us-gaap	Operating Leases Future Minimum Payments Due Thereafter OperatingLeasesFutureMinimumPaymentsDueThereafter	631000000	USD
CY2015	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	340000000	USD
CY2016	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	306000000	USD
CY2017	us-gaap	Operating Leases Rent Expense Net OperatingLeasesRentExpenseNet	320000000	USD
CY2015	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	73000000	USD
CY2016	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	52000000	USD
CY2017	us-gaap	Operating Leases Rent Expense Sublease Rentals1 OperatingLeasesRentExpenseSubleaseRentals1	57000000	USD
CY2016Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	380000000	USD
CY2017Q4	us-gaap	Other Accrued Liabilities Current OtherAccruedLiabilitiesCurrent	420000000	USD
CY2016Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	190000000	USD
CY2017Q4	us-gaap	Other Accrued Liabilities Noncurrent OtherAccruedLiabilitiesNoncurrent	304000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-495000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	-442000000	USD
CY2016Q4	us-gaap	Other Assets Current OtherAssetsCurrent	247000000	USD
CY2017Q4	us-gaap	Other Assets Current OtherAssetsCurrent	289000000	USD
CY2016Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	45000000	USD
CY2017Q4	us-gaap	Other Assets Miscellaneous Current OtherAssetsMiscellaneousCurrent	21000000	USD
CY2016Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	159000000	USD
CY2017Q4	us-gaap	Other Assets Miscellaneous Noncurrent OtherAssetsMiscellaneousNoncurrent	166000000	USD
CY2016Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	360000000	USD
CY2017Q4	us-gaap	Other Assets Noncurrent OtherAssetsNoncurrent	307000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-8000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	-12000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Available For Sale Securities Adjustment Net Of Tax OtherComprehensiveIncomeLossAvailableForSaleSecuritiesAdjustmentNetOfTax	12000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-389000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	-791000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Reclassifications Before Tax OtherComprehensiveIncomeLossBeforeReclassificationsBeforeTax	195000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-366000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	-714000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Before Reclassifications Net Of Tax OtherComprehensiveIncomeLossBeforeReclassificationsNetOfTax	242000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax	390000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-295000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	-491000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax OtherComprehensiveIncomeLossNetOfTax	421000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-6000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	-2000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Noncontrolling Interest OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToNoncontrollingInterest	5000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-289000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	-489000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Net Of Tax Portion Attributable To Parent OtherComprehensiveIncomeLossNetOfTaxPortionAttributableToParent	416000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-155000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-16000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax	-19000000	USD
CY2015	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-23000000	USD
CY2016	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-77000000	USD
CY2017	us-gaap	Other Comprehensive Income Loss Tax OtherComprehensiveIncomeLossTax	-47000000	USD
CY2016Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	656000000	USD
CY2017Q4	us-gaap	Other Liabilities Current OtherLiabilitiesCurrent	870000000	USD
CY2016Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	719000000	USD
CY2017Q4	us-gaap	Other Liabilities Noncurrent OtherLiabilitiesNoncurrent	1102000000	USD
CY2015	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	-1000000	USD
CY2016	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	0	USD
CY2017	us-gaap	Other Nonoperating Income Expense OtherNonoperatingIncomeExpense	0	USD
CY2015	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1550000000	USD
CY2016	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	1257000000	USD
CY2017	us-gaap	Payments For Repurchase Of Common Stock PaymentsForRepurchaseOfCommonStock	2399000000	USD
CY2015	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	323000000	USD
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	345000000	USD
CY2016	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	345000000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	364000000	USD
CY2017	us-gaap	Payments Of Dividends Common Stock PaymentsOfDividendsCommonStock	364000000	USD
CY2015	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	30000000	USD
CY2016	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	129000000	USD
CY2017	us-gaap	Payments Related To Tax Withholding For Share Based Compensation PaymentsRelatedToTaxWithholdingForShareBasedCompensation	121000000	USD
CY2015	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	16000000	USD
CY2016	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	879000000	USD
CY2017	us-gaap	Payments To Acquire Businesses Net Of Cash Acquired PaymentsToAcquireBusinessesNetOfCashAcquired	1029000000	USD
CY2015	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	266000000	USD
CY2016	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	64000000	USD
CY2017	us-gaap	Payments To Acquire Other Investments PaymentsToAcquireOtherInvestments	64000000	USD
CY2015	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	200000000	USD
CY2016	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	156000000	USD
CY2017	us-gaap	Payments To Acquire Property Plant And Equipment PaymentsToAcquirePropertyPlantAndEquipment	183000000	USD
CY2016Q4	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent	1760000000	USD
CY2017Q4	us-gaap	Pension And Other Postretirement And Postemployment Benefit Plans Liabilities Noncurrent PensionAndOtherPostretirementAndPostemploymentBenefitPlansLiabilitiesNoncurrent	1789000000	USD
CY2016Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	102000000	USD
CY2017Q4	us-gaap	Prepaid Expense Current PrepaidExpenseCurrent	126000000	USD
CY2015	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	205000000	USD
CY2016	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	107000000	USD
CY2017	us-gaap	Proceeds From Divestiture Of Businesses Net Of Cash Divested ProceedsFromDivestitureOfBusinessesNetOfCashDivested	4246000000	USD
CY2015	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	5351000000	USD
CY2016	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	3467000000	USD
CY2017	us-gaap	Proceeds From Issuance Of Long Term Debt ProceedsFromIssuanceOfLongTermDebt	1654000000	USD
CY2015	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-39000000	USD
CY2016	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-77000000	USD
CY2017	us-gaap	Proceeds From Payments For Other Financing Activities ProceedsFromPaymentsForOtherFinancingActivities	-36000000	USD
CY2015	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-39000000	USD
CY2016	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-77000000	USD
CY2017	us-gaap	Proceeds From Payments To Minority Shareholders ProceedsFromPaymentsToMinorityShareholders	-36000000	USD
CY2015	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	220000000	USD
CY2016	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	43000000	USD
CY2017	us-gaap	Proceeds From Sale And Maturity Of Other Investments ProceedsFromSaleAndMaturityOfOtherInvestments	68000000	USD
CY2015	us-gaap	Profit Loss ProfitLoss	1422000000	USD
CY2016Q1	us-gaap	Profit Loss ProfitLoss	337000000	USD
CY2016Q2	us-gaap	Profit Loss ProfitLoss	308000000	USD
CY2016Q3	us-gaap	Profit Loss ProfitLoss	326000000	USD
CY2016Q4	us-gaap	Profit Loss ProfitLoss	459000000	USD
CY2016	us-gaap	Profit Loss ProfitLoss	1430000000	USD
CY2017Q1	us-gaap	Profit Loss ProfitLoss	305000000	USD
CY2017Q2	us-gaap	Profit Loss ProfitLoss	778000000	USD
CY2017Q3	us-gaap	Profit Loss ProfitLoss	192000000	USD
CY2017Q4	us-gaap	Profit Loss ProfitLoss	-12000000	USD
CY2017	us-gaap	Profit Loss ProfitLoss	1263000000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1746000000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Gross PropertyPlantAndEquipmentGross	1733000000	USD
CY2016Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	550000000	USD
CY2017Q4	us-gaap	Property Plant And Equipment Net PropertyPlantAndEquipmentNet	564000000	USD
CY2015	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	12000000	USD
CY2016	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	10000000	USD
CY2017	us-gaap	Provision For Doubtful Accounts ProvisionForDoubtfulAccounts	18000000	USD
CY2015	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-128000000	USD
CY2016	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-332000000	USD
CY2017	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Before Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodBeforeTax	-227000000	USD
CY2015	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-77000000	USD
CY2016	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-225000000	USD
CY2017	us-gaap	Reclassification From Accumulated Other Comprehensive Income Current Period Net Of Tax ReclassificationFromAccumulatedOtherComprehensiveIncomeCurrentPeriodNetOfTax	-174000000	USD
CY2015	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	-51000000	USD
CY2016	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	-107000000	USD
CY2017	us-gaap	Reclassification From Aoci Current Period Tax ReclassificationFromAociCurrentPeriodTax	-53000000	USD
CY2015	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	5098000000	USD
CY2016	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	2945000000	USD
CY2017	us-gaap	Repayments Of Long Term Debt RepaymentsOfLongTermDebt	1999000000	USD
CY2016Q4	us-gaap	Restricted Cash And Investments Current RestrictedCashAndInvestmentsCurrent	82000000	USD
CY2017Q4	us-gaap	Restricted Cash And Investments Current RestrictedCashAndInvestmentsCurrent	96000000	USD
CY2017Q4	us-gaap	Restructuring And Related Cost Expected Cost Remaining1 RestructuringAndRelatedCostExpectedCostRemaining1	528000000	USD
CY2016Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	3807000000	USD
CY2017Q4	us-gaap	Retained Earnings Accumulated Deficit RetainedEarningsAccumulatedDeficit	2302000000	USD
CY2015	us-gaap	Revenues Revenues	9480000000	USD
CY2016Q1	us-gaap	Revenues Revenues	2276000000	USD
CY2016Q2	us-gaap	Revenues Revenues	2282000000	USD
CY2016Q3	us-gaap	Revenues Revenues	2201000000	USD
CY2016Q4	us-gaap	Revenues Revenues	2650000000	USD
CY2016	us-gaap	Revenues Revenues	9409000000	USD
CY2017Q1	us-gaap	Revenues Revenues	2381000000	USD
CY2017Q2	us-gaap	Revenues Revenues	2368000000	USD
CY2017Q3	us-gaap	Revenues Revenues	2340000000	USD
CY2017Q4	us-gaap	Revenues Revenues	2909000000	USD
CY2017	us-gaap	Revenues Revenues	9998000000	USD
CY2016Q4	us-gaap	Secured Debt Current SecuredDebtCurrent	0	USD
CY2017Q4	us-gaap	Secured Debt Current SecuredDebtCurrent	299000000	USD
CY2015	us-gaap	Share Based Compensation ShareBasedCompensation	320000000	USD
CY2016	us-gaap	Share Based Compensation ShareBasedCompensation	306000000	USD
CY2017	us-gaap	Share Based Compensation ShareBasedCompensation	319000000	USD
CY2016Q4	us-gaap	Short Term Investments ShortTermInvestments	290000000	USD
CY2017Q4	us-gaap	Short Term Investments ShortTermInvestments	529000000	USD
CY2016Q4	us-gaap	Shortterm Debt Fair Value ShorttermDebtFairValue	0	USD
CY2017Q4	us-gaap	Shortterm Debt Fair Value ShorttermDebtFairValue	301000000	USD
CY2015	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-155000000	USD
CY2016	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-125000000	USD
CY2017	us-gaap	Stock Issued During Period Value Share Based Compensation StockIssuedDuringPeriodValueShareBasedCompensation	-121000000	USD
CY2016Q4	us-gaap	Stockholders Equity StockholdersEquity	5475000000	USD
CY2017Q4	us-gaap	Stockholders Equity StockholdersEquity	4583000000	USD
CY2014Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6527000000	USD
CY2015Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	6059000000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	5532000000	USD
CY2017Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest	4648000000	USD
CY2016Q4	us-gaap	Stockholders Equity Including Portion Attributable To Noncontrolling Interest Adjusted Balance1 StockholdersEquityIncludingPortionAttributableToNoncontrollingInterestAdjustedBalance1	5581000000	USD
CY2015	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1550000000	USD
CY2016	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	1257000000	USD
CY2017	us-gaap	Treasury Stock Value Acquired Cost Method TreasuryStockValueAcquiredCostMethod	2415000000	USD
CY2017Q4	us-gaap	Undistributed Earnings Of Foreign Subsidiaries UndistributedEarningsOfForeignSubsidiaries	3200000000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	238000000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	278000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits UnrecognizedTaxBenefits	280000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsDecreasesResultingFromForeignCurrencyTranslation	1000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	12000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions	26000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	0	USD
CY2017	us-gaap	Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities	6000000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	33000000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	48000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Accrued UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestAccrued	55000000	USD
CY2015	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	2000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	15000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Income Tax Penalties And Interest Expense UnrecognizedTaxBenefitsIncomeTaxPenaltiesAndInterestExpense	11000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	2000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Acquisition UnrecognizedTaxBenefitsIncreasesResultingFromAcquisition	0	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	20000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions	12000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Foreign Currency Translation UnrecognizedTaxBenefitsIncreasesResultingFromForeignCurrencyTranslation	4000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	36000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions	25000000	USD
CY2016	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	5000000	USD
CY2017	us-gaap	Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations	7000000	USD
CY2015Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	200000000	USD
CY2016Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	240000000	USD
CY2017Q4	us-gaap	Unrecognized Tax Benefits That Would Impact Effective Tax Rate UnrecognizedTaxBenefitsThatWouldImpactEffectiveTaxRate	219000000	USD
CY2017	us-gaap	Valuation Allowance Deferred Tax Asset Change In Amount ValuationAllowanceDeferredTaxAssetChangeInAmount	6000000	USD
CY2015	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	283800000	shares
CY2016	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	270300000	shares
CY2017	us-gaap	Weighted Average Number Of Diluted Shares Outstanding WeightedAverageNumberOfDilutedSharesOutstanding	260700000	shares
CY2015	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	280800000	shares
CY2016	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	268100000	shares
CY2017	us-gaap	Weighted Average Number Of Shares Outstanding Basic WeightedAverageNumberOfSharesOutstandingBasic	258500000	shares
CY2017	us-gaap	Use Of Estimates UseOfEstimates	<div style="font-family:Times New Roman;font-size:10pt;"><div style="line-height:120%;padding-bottom:10px;padding-top:10px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;font-style:italic;font-weight:bold;">Use of Estimates</font></div><div style="line-height:120%;padding-bottom:10px;padding-top:10px;text-align:justify;font-size:10pt;"><font style="font-family:inherit;font-size:10pt;">The preparation of the accompanying Consolidated Financial Statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities, the disclosures of contingent assets and liabilities at the date of the financial statements, and the reported amounts of reserves and expenses. These estimates and assumptions are based on management’s best estimates and judgments. Management evaluates its estimates and assumptions on an ongoing basis using historical experience and other factors, including the current economic environment. Management believes its estimates to be reasonable given the current facts available. Aon adjusts such estimates and assumptions when facts and circumstances dictate. Illiquid credit markets, volatile equity markets, and foreign currency exchange rate movements increase the uncertainty inherent in such estimates and assumptions. As future events and their effects cannot be determined with precision, actual results could differ significantly from these estimates. Changes in estimates resulting from continuing changes in the economic environment would, if applicable, be reflected in the financial statements in future periods.</font></div></div>

Files In Submission

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0001628280-18-001923.txt	Edgar Link	pending
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aon-20171231.xml	Edgar Link	completed
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$AON
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2017 Form 10-K Financial Statement

#000162828018001923 Filed on February 20, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

$AON Aon PLC Stock $aon

2017 Form 10-K Financial Statement

#000162828018001923 Filed on February 20, 2018

Income Statement

Balance Sheet

Cashflow Statement

Facts In Submission

Files In Submission

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Aon PLC Stock $aon