2019 Q4 Form 10-K Financial Statement
#000156459020006736 Filed on February 26, 2020
Income Statement
Concept | 2019 Q4 | 2018 Q4 | 2018 Q3 |
---|---|---|---|
Revenue | $2.690B | $2.372B | $1.859B |
YoY Change | 13.41% | 14.15% | 0.38% |
Cost Of Revenue | |||
YoY Change | |||
Gross Profit | |||
YoY Change | |||
Gross Profit Margin | |||
Selling, General & Admin | |||
YoY Change | |||
% of Gross Profit | |||
Research & Development | |||
YoY Change | |||
% of Gross Profit | |||
Depreciation & Amortization | |||
YoY Change | |||
% of Gross Profit | |||
Operating Expenses | $1.902B | $1.842B | |
YoY Change | -4.8% | -1.92% | |
Operating Profit | $687.0M | $470.0M | $17.00M |
YoY Change | 46.17% | 487.5% | -165.38% |
Interest Expense | $51.00M | ||
YoY Change | 8.51% | ||
% of Operating Profit | 300.0% | ||
Other Income/Expense, Net | $70.00M | ||
YoY Change | 84.21% | ||
Pretax Income | $36.00M | ||
YoY Change | -202.86% | ||
Income Tax | -$10.00M | ||
% Of Pretax Income | -27.78% | ||
Net Earnings | $544.0M | $378.0M | $44.00M |
YoY Change | 43.92% | 54.29% | -181.48% |
Net Earnings / Revenue | 20.22% | 15.94% | 2.37% |
Basic Earnings Per Share | $4.20 | $2.91 | $0.34 |
Diluted Earnings Per Share | $4.18 | $2.89 | $0.33 |
COMMON SHARES | |||
Basic Shares Outstanding | 128.6M | 129.9M | 131.0M |
Diluted Shares Outstanding | 132.0M |
Balance Sheet
Concept | 2019 Q4 | 2018 Q4 | 2018 Q3 |
---|---|---|---|
SHORT-TERM ASSETS | |||
Cash & Short-Term Investments | |||
YoY Change | |||
Cash & Equivalents | $887.0M | $1.033B | $931.0M |
Short-Term Investments | |||
Other Short-Term Assets | $112.0M | $57.00M | $68.00M |
YoY Change | 96.49% | -19.72% | 1.49% |
Inventory | |||
Prepaid Expenses | |||
Receivables | $2.621B | $2.379B | $2.132B |
Other Receivables | |||
Total Short-Term Assets | $17.04B | $16.42B | $16.76B |
YoY Change | 3.76% | 3.52% | 6.79% |
LONG-TERM ASSETS | |||
Property, Plant & Equipment | $1.046B | $942.0M | $944.0M |
YoY Change | 11.04% | -4.37% | 0.75% |
Goodwill | $10.39B | $10.47B | $10.46B |
YoY Change | -0.76% | -0.51% | -0.68% |
Intangibles | $3.478B | $3.318B | $3.429B |
YoY Change | 4.82% | -14.53% | -15.0% |
Long-Term Investments | |||
YoY Change | |||
Other Assets | $835.0M | $467.0M | $500.0M |
YoY Change | 78.8% | 4.47% | 15.74% |
Total Long-Term Assets | $18.39B | $15.97B | $16.29B |
YoY Change | 15.18% | -3.81% | -1.79% |
TOTAL ASSETS | |||
Total Short-Term Assets | $17.04B | $16.42B | $16.76B |
Total Long-Term Assets | $18.39B | $15.97B | $16.29B |
Total Assets | $35.43B | $32.39B | $33.04B |
YoY Change | 9.39% | -0.22% | 2.38% |
SHORT-TERM LIABILITIES | |||
YoY Change | |||
Accounts Payable | $163.0M | ||
YoY Change | 19.85% | ||
Accrued Expenses | |||
YoY Change | |||
Deferred Revenue | |||
YoY Change | |||
Short-Term Debt | |||
YoY Change | |||
Long-Term Debt Due | $316.0M | $186.0M | |
YoY Change | 69.89% | ||
Total Short-Term Liabilities | $16.07B | $15.30B | $15.56B |
YoY Change | 5.03% | 3.7% | 6.86% |
LONG-TERM LIABILITIES | |||
Long-Term Debt | $5.301B | $4.389B | $4.498B |
YoY Change | 20.78% | -1.37% | 0.11% |
Other Long-Term Liabilities | $335.0M | $429.0M | $448.0M |
YoY Change | -21.91% | -21.14% | -5.88% |
Total Long-Term Liabilities | $8.987B | $7.087B | $7.296B |
YoY Change | 26.81% | -4.57% | -4.44% |
TOTAL LIABILITIES | |||
Total Short-Term Liabilities | $16.07B | $15.30B | $15.56B |
Total Long-Term Liabilities | $8.987B | $7.087B | $7.296B |
Total Liabilities | $25.06B | $22.39B | $22.85B |
YoY Change | 11.92% | 0.93% | 2.97% |
SHAREHOLDERS EQUITY | |||
Retained Earnings | $1.792B | $1.201B | $1.102B |
YoY Change | 49.21% | 8.79% | -2.48% |
Common Stock | $10.69B | $10.62B | $10.58B |
YoY Change | 0.68% | 0.73% | |
Preferred Stock | |||
YoY Change | |||
Treasury Stock (at cost) | $3.000M | $3.000M | $3.000M |
YoY Change | 0.0% | 0.0% | -92.5% |
Treasury Stock Shares | |||
Shareholders Equity | $10.25B | $9.852B | $10.05B |
YoY Change | |||
Total Liabilities & Shareholders Equity | $35.43B | $32.39B | $33.04B |
YoY Change | 9.39% | -0.22% | 2.38% |
Cashflow Statement
Concept | 2019 Q4 | 2018 Q4 | 2018 Q3 |
---|---|---|---|
OPERATING ACTIVITIES | |||
Net Income | $544.0M | $378.0M | $44.00M |
YoY Change | 43.92% | 54.29% | -181.48% |
Depreciation, Depletion And Amortization | |||
YoY Change | |||
Cash From Operating Activities | |||
YoY Change | |||
INVESTING ACTIVITIES | |||
Capital Expenditures | |||
YoY Change | |||
Acquisitions | |||
YoY Change | |||
Other Investing Activities | |||
YoY Change | |||
Cash From Investing Activities | |||
YoY Change | |||
FINANCING ACTIVITIES | |||
Cash Dividend Paid | |||
YoY Change | |||
Common Stock Issuance & Retirement, Net | |||
YoY Change | |||
Debt Paid & Issued, Net | |||
YoY Change | |||
Cash From Financing Activities | |||
YoY Change | |||
NET CHANGE | |||
Cash From Operating Activities | |||
Cash From Investing Activities | |||
Cash From Financing Activities | |||
Net Change In Cash | |||
YoY Change | |||
FREE CASH FLOW | |||
Cash From Operating Activities | |||
Capital Expenditures | |||
Free Cash Flow | |||
YoY Change |
Facts In Submission
Frame | Concept Type | Concept / XBRL Key | Value | Unit |
---|---|---|---|---|
CY2018Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
0 | |
CY2018 | us-gaap |
Revenues
Revenues
|
8513000000 | |
CY2017 | us-gaap |
Revenues
Revenues
|
8202000000 | |
CY2019 | dei |
Local Phone Number
LocalPhoneNumber
|
44-20-3124-6000 | |
CY2019 | dei |
City Area Code
CityAreaCode
|
011 | |
CY2019 | dei |
Entity Address Country
EntityAddressCountry
|
GB | |
CY2018 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
534000000 | |
CY2017 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
581000000 | |
CY2019 | wltw |
Depreciation Not Including Integration Component
DepreciationNotIncludingIntegrationComponent
|
240000000 | |
CY2018 | wltw |
Depreciation Not Including Integration Component
DepreciationNotIncludingIntegrationComponent
|
208000000 | |
CY2019 | dei |
Entity Tax Identification Number
EntityTaxIdentificationNumber
|
98-0352587 | |
CY2019 | dei |
Entity Address Address Line1
EntityAddressAddressLine1
|
c/o Willis Group Limited | |
CY2019 | dei |
Entity Address City Or Town
EntityAddressCityOrTown
|
London | |
CY2019 | dei |
Entity Address Postal Zip Code
EntityAddressPostalZipCode
|
EC3M 7DQ | |
CY2019 | dei |
Entity File Number
EntityFileNumber
|
001-16503 | |
CY2019 | dei |
Entity Incorporation State Country Code
EntityIncorporationStateCountryCode
|
L2 | |
CY2019 | dei |
Entity Address Address Line2
EntityAddressAddressLine2
|
51 Lime Street | |
CY2017 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
164000000 | |
CY2019 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
814000000 | |
CY2018 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
7704000000 | |
CY2017 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
7686000000 | |
CY2019 | wltw |
Business Combination Integration Related Costs Credits
BusinessCombinationIntegrationRelatedCostsCredits
|
13000000 | |
CY2019 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
7710000000 | |
CY2018 | wltw |
Business Combination Integration Related Costs Credits
BusinessCombinationIntegrationRelatedCostsCredits
|
202000000 | |
CY2019 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
1329000000 | |
CY2018 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
809000000 | |
CY2018 | us-gaap |
Interest Expense
InterestExpense
|
208000000 | |
CY2017 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
516000000 | |
CY2017 | us-gaap |
Interest Expense
InterestExpense
|
188000000 | |
CY2019 | us-gaap |
Labor And Related Expense
LaborAndRelatedExpense
|
5249000000 | |
CY2019 | us-gaap |
Other Cost And Expense Operating
OtherCostAndExpenseOperating
|
1719000000 | |
CY2018 | us-gaap |
Other Cost And Expense Operating
OtherCostAndExpenseOperating
|
1637000000 | |
CY2019 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
489000000 | |
CY2019Q3 | us-gaap |
Debt Instrument Term
DebtInstrumentTerm
|
P1Y | |
CY2019Q4 | us-gaap |
Commitments And Contingencies
CommitmentsAndContingencies
|
0 | |
CY2017 | wltw |
Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Nonredeemable Noncontrolling Interest
OtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNonredeemableNoncontrollingInterest
|
378000000 | |
CY2019 | us-gaap |
Stock Issued During Period Value Share Based Compensation
StockIssuedDuringPeriodValueShareBasedCompensation
|
45000000 | |
CY2018 | us-gaap |
Proceeds From Issuance Of Senior Long Term Debt
ProceedsFromIssuanceOfSeniorLongTermDebt
|
998000000 | |
CY2017 | us-gaap |
Proceeds From Issuance Of Senior Long Term Debt
ProceedsFromIssuanceOfSeniorLongTermDebt
|
649000000 | |
CY2017 | us-gaap |
Stock Issued During Period Value Share Based Compensation
StockIssuedDuringPeriodValueShareBasedCompensation
|
62000000 | |
CY2017 | wltw |
Adjustments To Additional Paid In Capital Sharebased Compensation And Net Settlements
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndNetSettlements
|
67000000 | |
CY2017 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
384000000 | |
CY2017 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
492000000 | |
CY2018 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
20000000 | |
CY2019Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
10249000000 | |
CY2018 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
851000000 | |
CY2019 | us-gaap |
Profit Loss
ProfitLoss
|
1073000000 | |
CY2018 | us-gaap |
Profit Loss
ProfitLoss
|
715000000 | |
CY2017 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
24000000 | |
CY2017 | us-gaap |
Net Income Loss
NetIncomeLoss
|
568000000 | |
CY2019 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities
UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
|
0 | |
CY2018 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities
UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
|
4000000 | |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
249000000 | |
CY2018 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
136000000 | |
CY2017 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-100000000 | |
CY2017 | us-gaap |
Profit Loss
ProfitLoss
|
592000000 | |
CY2019 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
29000000 | |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
1044000000 | |
CY2018 | us-gaap |
Net Income Loss
NetIncomeLoss
|
695000000 | |
CY2019 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
8.05 | |
CY2019 | us-gaap |
Revenues
Revenues
|
9039000000 | |
CY2018 | us-gaap |
Labor And Related Expense
LaborAndRelatedExpense
|
5123000000 | |
CY2017 | us-gaap |
Labor And Related Expense
LaborAndRelatedExpense
|
4967000000 | |
CY2017 | us-gaap |
Other Cost And Expense Operating
OtherCostAndExpenseOperating
|
1534000000 | |
CY2017 | wltw |
Depreciation Not Including Integration Component
DepreciationNotIncludingIntegrationComponent
|
203000000 | |
CY2019 | us-gaap |
Restructuring Charges
RestructuringCharges
|
0 | |
CY2018 | us-gaap |
Restructuring Charges
RestructuringCharges
|
0 | |
CY2017 | us-gaap |
Restructuring Charges
RestructuringCharges
|
132000000 | |
CY2017 | wltw |
Business Combination Integration Related Costs Credits
BusinessCombinationIntegrationRelatedCostsCredits
|
269000000 | |
CY2019 | us-gaap |
Interest Expense
InterestExpense
|
234000000 | |
CY2019 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
227000000 | |
CY2018 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
250000000 | |
CY2019 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
1322000000 | |
CY2019Q4 | us-gaap |
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1
RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
|
P1Y | |
CY2019Q4 | us-gaap |
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1
RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
|
P2Y | |
CY2019Q4 | us-gaap |
Revenue Remaining Performance Obligation Expected Timing Of Satisfaction Period1
RevenueRemainingPerformanceObligationExpectedTimingOfSatisfactionPeriod1
|
||
CY2019Q4 | us-gaap |
Operating Lease Weighted Average Remaining Lease Term1
OperatingLeaseWeightedAverageRemainingLeaseTerm1
|
P8Y9M18D | |
CY2019Q4 | us-gaap |
Finance Lease Weighted Average Remaining Lease Term1
FinanceLeaseWeightedAverageRemainingLeaseTerm1
|
P6Y | |
CY2019 | dei |
Document Annual Report
DocumentAnnualReport
|
true | |
CY2019 | dei |
Document Transition Report
DocumentTransitionReport
|
false | |
CY2019 | dei |
Security12b Title
Security12bTitle
|
Ordinary Shares, nominal value $0.000304635 per share | |
CY2019 | dei |
Security Exchange Name
SecurityExchangeName
|
NASDAQ | |
CY2019 | dei |
Entity Interactive Data Current
EntityInteractiveDataCurrent
|
Yes | |
CY2018 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
5.29 | |
CY2017 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
4.21 | |
CY2019 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
8.02 | |
CY2018 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
5.27 | |
CY2017 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
4.18 | |
CY2019 | us-gaap |
Profit Loss
ProfitLoss
|
1073000000 | |
CY2018 | us-gaap |
Profit Loss
ProfitLoss
|
715000000 | |
CY2017 | us-gaap |
Profit Loss
ProfitLoss
|
592000000 | |
CY2019 | us-gaap |
Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax
OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
|
78000000 | |
CY2018 | us-gaap |
Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax
OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
|
-251000000 | |
CY2017 | us-gaap |
Other Comprehensive Income Loss Foreign Currency Transaction And Translation Adjustment Net Of Tax
OtherComprehensiveIncomeLossForeignCurrencyTransactionAndTranslationAdjustmentNetOfTax
|
295000000 | |
CY2019 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
|
329000000 | |
CY2018 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
|
199000000 | |
CY2017 | us-gaap |
Other Comprehensive Income Loss Pension And Other Postretirement Benefit Plans Adjustment Net Of Tax
OtherComprehensiveIncomeLossPensionAndOtherPostretirementBenefitPlansAdjustmentNetOfTax
|
-14000000 | |
CY2019 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
|
21000000 | |
CY2018 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
|
2000000 | |
CY2017 | us-gaap |
Other Comprehensive Income Loss Derivatives Qualifying As Hedges Net Of Tax
OtherComprehensiveIncomeLossDerivativesQualifyingAsHedgesNetOfTax
|
75000000 | |
CY2018 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
-448000000 | |
CY2018Q4 | wltw |
Operating And Capital Lease Liability
OperatingAndCapitalLeaseLiability
|
1178000000 | |
CY2017 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
384000000 | |
CY2019 | us-gaap |
Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
|
843000000 | |
CY2019 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
-230000000 | |
CY2019Q4 | us-gaap |
Deferred Income Tax Liabilities Net
DeferredIncomeTaxLiabilitiesNet
|
526000000 | |
CY2018Q4 | us-gaap |
Deferred Income Tax Liabilities Net
DeferredIncomeTaxLiabilitiesNet
|
559000000 | |
CY2019Q4 | wltw |
Provision For Liabilities Non Current
ProvisionForLiabilitiesNonCurrent
|
537000000 | |
CY2018Q4 | wltw |
Provision For Liabilities Non Current
ProvisionForLiabilitiesNonCurrent
|
540000000 | |
CY2018 | us-gaap |
Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
|
267000000 | |
CY2019Q4 | us-gaap |
Defined Benefit Plan Assets For Plan Benefits Noncurrent
DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
|
868000000 | |
CY2018Q4 | us-gaap |
Defined Benefit Plan Assets For Plan Benefits Noncurrent
DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
|
773000000 | |
CY2019Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
835000000 | |
CY2018Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
467000000 | |
CY2019Q4 | us-gaap |
Assets Noncurrent
AssetsNoncurrent
|
18389000000 | |
CY2019Q4 | us-gaap |
Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
|
164000000 | |
CY2018Q4 | us-gaap |
Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
|
0 | |
CY2019Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
802000000 | |
CY2018Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
864000000 | |
CY2019Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
16070000000 | |
CY2018Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
15301000000 | |
CY2019Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
5301000000 | |
CY2019Q4 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
968000000 | |
CY2018Q4 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
0 | |
CY2018Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
4389000000 | |
CY2019Q4 | us-gaap |
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
|
1324000000 | |
CY2018Q4 | us-gaap |
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
|
1170000000 | |
CY2017 | us-gaap |
Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
|
976000000 | |
CY2019 | us-gaap |
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
|
29000000 | |
CY2018 | us-gaap |
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
|
20000000 | |
CY2017 | us-gaap |
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
|
37000000 | |
CY2018 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
247000000 | |
CY2017 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
939000000 | |
CY2019Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
887000000 | |
CY2018Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
1033000000 | |
CY2019Q4 | us-gaap |
Funds Held For Clients
FundsHeldForClients
|
13004000000 | |
CY2018Q4 | us-gaap |
Funds Held For Clients
FundsHeldForClients
|
12604000000 | |
CY2019Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
2621000000 | |
CY2018Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
2379000000 | |
CY2019Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
525000000 | |
CY2018Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
404000000 | |
CY2019Q4 | us-gaap |
Assets Current
AssetsCurrent
|
17037000000 | |
CY2018Q4 | us-gaap |
Assets Current
AssetsCurrent
|
16420000000 | |
CY2019Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
1046000000 | |
CY2018Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
942000000 | |
CY2019Q4 | us-gaap |
Goodwill
Goodwill
|
11194000000 | |
CY2018Q4 | us-gaap |
Goodwill
Goodwill
|
10465000000 | |
CY2019Q4 | us-gaap |
Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
|
3478000000 | |
CY2018Q4 | us-gaap |
Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
|
3318000000 | |
CY2018Q4 | us-gaap |
Assets Noncurrent
AssetsNoncurrent
|
15965000000 | |
CY2019Q4 | us-gaap |
Assets
Assets
|
35426000000 | |
CY2018Q4 | us-gaap |
Assets
Assets
|
32385000000 | |
CY2019Q4 | wltw |
Fiduciary Liabilities Current
FiduciaryLiabilitiesCurrent
|
13004000000 | |
CY2018Q4 | wltw |
Fiduciary Liabilities Current
FiduciaryLiabilitiesCurrent
|
12604000000 | |
CY2019Q4 | wltw |
Deferred Revenue And Accrued Liabilities Current
DeferredRevenueAndAccruedLiabilitiesCurrent
|
1784000000 | |
CY2018Q4 | wltw |
Deferred Revenue And Accrued Liabilities Current
DeferredRevenueAndAccruedLiabilitiesCurrent
|
1647000000 | |
CY2019Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
316000000 | |
CY2018Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
186000000 | |
CY2019Q4 | wltw |
Defined Benefit Plan Expected Future Benefit Payments
DefinedBenefitPlanExpectedFutureBenefitPayments
|
4464000000 | |
CY2019Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
316000000 | |
CY2019Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
335000000 | |
CY2019Q4 | us-gaap |
Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
|
964000000 | |
CY2018Q4 | us-gaap |
Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
|
0 | |
CY2018Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
429000000 | |
CY2019Q4 | us-gaap |
Liabilities Noncurrent
LiabilitiesNoncurrent
|
8987000000 | |
CY2018Q4 | us-gaap |
Liabilities Noncurrent
LiabilitiesNoncurrent
|
7087000000 | |
CY2019Q4 | us-gaap |
Liabilities
Liabilities
|
25057000000 | |
CY2018Q4 | us-gaap |
Minority Interest
MinorityInterest
|
119000000 | |
CY2018Q4 | us-gaap |
Liabilities
Liabilities
|
22388000000 | |
CY2019Q4 | us-gaap |
Redeemable Noncontrolling Interest Equity Carrying Amount
RedeemableNoncontrollingInterestEquityCarryingAmount
|
0 | |
CY2018Q4 | us-gaap |
Treasury Stock Value
TreasuryStockValue
|
3000000 | |
CY2018Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
9852000000 | |
CY2019Q4 | us-gaap |
Minority Interest
MinorityInterest
|
120000000 | |
CY2018Q4 | us-gaap |
Redeemable Noncontrolling Interest Equity Carrying Amount
RedeemableNoncontrollingInterestEquityCarryingAmount
|
26000000 | |
CY2019Q4 | us-gaap |
Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
|
10687000000 | |
CY2018Q4 | us-gaap |
Additional Paid In Capital Common Stock
AdditionalPaidInCapitalCommonStock
|
10615000000 | |
CY2019Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
1792000000 | |
CY2018Q4 | us-gaap |
Retained Earnings Accumulated Deficit
RetainedEarningsAccumulatedDeficit
|
1201000000 | |
CY2019Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
-2227000000 | |
CY2018Q4 | us-gaap |
Accumulated Other Comprehensive Income Loss Net Of Tax
AccumulatedOtherComprehensiveIncomeLossNetOfTax
|
-1961000000 | |
CY2019Q4 | us-gaap |
Treasury Stock Value
TreasuryStockValue
|
3000000 | |
CY2019Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
10369000000 | |
CY2018Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
9971000000 | |
CY2019Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
35426000000 | |
CY2018Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
32385000000 | |
CY2019Q4 | us-gaap |
Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
|
0.000115 | |
CY2018Q4 | us-gaap |
Preferred Stock Par Or Stated Value Per Share
PreferredStockParOrStatedValuePerShare
|
0.000115 | |
CY2019Q4 | us-gaap |
Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
|
1000000000 | |
CY2018Q4 | us-gaap |
Preferred Stock Shares Authorized
PreferredStockSharesAuthorized
|
1000000000 | |
CY2019Q4 | us-gaap |
Preferred Stock Shares Issued
PreferredStockSharesIssued
|
0 | |
CY2018Q4 | us-gaap |
Preferred Stock Shares Issued
PreferredStockSharesIssued
|
0 | |
CY2019 | us-gaap |
Profit Loss
ProfitLoss
|
1073000000 | |
CY2018 | us-gaap |
Profit Loss
ProfitLoss
|
715000000 | |
CY2017 | us-gaap |
Profit Loss
ProfitLoss
|
592000000 | |
CY2019 | us-gaap |
Depreciation
Depreciation
|
240000000 | |
CY2018 | us-gaap |
Depreciation
Depreciation
|
213000000 | |
CY2017 | us-gaap |
Depreciation
Depreciation
|
252000000 | |
CY2019 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
489000000 | |
CY2018 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
534000000 | |
CY2017 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
581000000 | |
CY2019 | wltw |
Operating Lease Right Of Use Asset Amortization
OperatingLeaseRightOfUseAssetAmortization
|
148000000 | |
CY2018 | wltw |
Operating Lease Right Of Use Asset Amortization
OperatingLeaseRightOfUseAssetAmortization
|
0 | |
CY2017 | wltw |
Operating Lease Right Of Use Asset Amortization
OperatingLeaseRightOfUseAssetAmortization
|
0 | |
CY2019 | us-gaap |
Pension And Other Postretirement Benefits Expense Reversal Of Expense Noncash
PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash
|
-135000000 | |
CY2018 | us-gaap |
Pension And Other Postretirement Benefits Expense Reversal Of Expense Noncash
PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash
|
-163000000 | |
CY2017 | us-gaap |
Pension And Other Postretirement Benefits Expense Reversal Of Expense Noncash
PensionAndOtherPostretirementBenefitsExpenseReversalOfExpenseNoncash
|
-91000000 | |
CY2019 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
9000000 | |
CY2018 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
8000000 | |
CY2017 | us-gaap |
Provision For Doubtful Accounts
ProvisionForDoubtfulAccounts
|
17000000 | |
CY2019 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
-72000000 | |
CY2018 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
-115000000 | |
CY2017 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
-285000000 | |
CY2019 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
74000000 | |
CY2018 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
50000000 | |
CY2017 | us-gaap |
Share Based Compensation
ShareBasedCompensation
|
67000000 | |
CY2019 | us-gaap |
Gain Loss On Sale Of Business
GainLossOnSaleOfBusiness
|
-2000000 | |
CY2018 | us-gaap |
Gain Loss On Sale Of Business
GainLossOnSaleOfBusiness
|
-9000000 | |
CY2017 | us-gaap |
Gain Loss On Sale Of Business
GainLossOnSaleOfBusiness
|
13000000 | |
CY2019 | us-gaap |
Foreign Currency Transaction Gain Loss Before Tax
ForeignCurrencyTransactionGainLossBeforeTax
|
-26000000 | |
CY2019Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
5301000000 | |
CY2017 | us-gaap |
Foreign Currency Transaction Gain Loss Before Tax
ForeignCurrencyTransactionGainLossBeforeTax
|
-77000000 | |
CY2018 | us-gaap |
Foreign Currency Transaction Gain Loss Before Tax
ForeignCurrencyTransactionGainLossBeforeTax
|
-26000000 | |
CY2019 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
-17000000 | |
CY2019 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
1329000000 | |
CY2018 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
36000000 | |
CY2018 | us-gaap |
Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
|
22000000 | |
CY2017 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
13000000 | |
CY2018 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
-8000000 | |
CY2017 | us-gaap |
Other Noncash Income Expense
OtherNoncashIncomeExpense
|
57000000 | |
CY2019 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
261000000 | |
CY2018 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
-68000000 | |
CY2017 | us-gaap |
Increase Decrease In Accounts Receivable
IncreaseDecreaseInAccountsReceivable
|
64000000 | |
CY2019 | wltw |
Increase Decrease In Fiduciary Assets
IncreaseDecreaseInFiduciaryAssets
|
365000000 | |
CY2018 | wltw |
Increase Decrease In Fiduciary Assets
IncreaseDecreaseInFiduciaryAssets
|
839000000 | |
CY2017 | wltw |
Increase Decrease In Fiduciary Assets
IncreaseDecreaseInFiduciaryAssets
|
1167000000 | |
CY2019 | wltw |
Increase Decrease In Fiduciary Liabilities
IncreaseDecreaseInFiduciaryLiabilities
|
365000000 | |
CY2018 | wltw |
Increase Decrease In Fiduciary Liabilities
IncreaseDecreaseInFiduciaryLiabilities
|
839000000 | |
CY2017 | wltw |
Increase Decrease In Fiduciary Liabilities
IncreaseDecreaseInFiduciaryLiabilities
|
1167000000 | |
CY2019 | us-gaap |
Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
|
269000000 | |
CY2017 | us-gaap |
Increase Decrease In Other Operating Assets
IncreaseDecreaseInOtherOperatingAssets
|
128000000 | |
CY2019 | us-gaap |
Increase Decrease In Other Operating Liabilities
IncreaseDecreaseInOtherOperatingLiabilities
|
-264000000 | |
CY2018 | us-gaap |
Increase Decrease In Other Operating Liabilities
IncreaseDecreaseInOtherOperatingLiabilities
|
-20000000 | |
CY2017 | us-gaap |
Increase Decrease In Other Operating Liabilities
IncreaseDecreaseInOtherOperatingLiabilities
|
-51000000 | |
CY2019 | wltw |
Increase Decrease In Provision For Liabilities
IncreaseDecreaseInProvisionForLiabilities
|
4000000 | |
CY2018 | wltw |
Increase Decrease In Provision For Liabilities
IncreaseDecreaseInProvisionForLiabilities
|
-23000000 | |
CY2017 | wltw |
Increase Decrease In Provision For Liabilities
IncreaseDecreaseInProvisionForLiabilities
|
-35000000 | |
CY2019 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
1081000000 | |
CY2018 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
1288000000 | |
CY2017 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
862000000 | |
CY2019 | wltw |
Payments To Acquire Fixed Assets And Software For Internal Use
PaymentsToAcquireFixedAssetsAndSoftwareForInternalUse
|
246000000 | |
CY2018 | wltw |
Payments To Acquire Fixed Assets And Software For Internal Use
PaymentsToAcquireFixedAssetsAndSoftwareForInternalUse
|
268000000 | |
CY2017 | wltw |
Payments To Acquire Fixed Assets And Software For Internal Use
PaymentsToAcquireFixedAssetsAndSoftwareForInternalUse
|
300000000 | |
CY2019 | us-gaap |
Payments To Develop Software
PaymentsToDevelopSoftware
|
59000000 | |
CY2018 | us-gaap |
Payments To Develop Software
PaymentsToDevelopSoftware
|
54000000 | |
CY2017 | us-gaap |
Payments To Develop Software
PaymentsToDevelopSoftware
|
75000000 | |
CY2019 | us-gaap |
Proceeds From Divestiture Of Businesses Net Of Cash Divested
ProceedsFromDivestitureOfBusinessesNetOfCashDivested
|
17000000 | |
CY2018 | us-gaap |
Proceeds From Divestiture Of Businesses Net Of Cash Divested
ProceedsFromDivestitureOfBusinessesNetOfCashDivested
|
4000000 | |
CY2017 | us-gaap |
Proceeds From Divestiture Of Businesses Net Of Cash Divested
ProceedsFromDivestitureOfBusinessesNetOfCashDivested
|
57000000 | |
CY2019 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
-3000000 | |
CY2018 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
-13000000 | |
CY2017 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
4000000 | |
CY2019 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-1614000000 | |
CY2018 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-341000000 | |
CY2017 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-335000000 | |
CY2019 | us-gaap |
Proceeds From Repayments Of Lines Of Credit
ProceedsFromRepaymentsOfLinesOfCredit
|
-131000000 | |
CY2018 | us-gaap |
Proceeds From Repayments Of Lines Of Credit
ProceedsFromRepaymentsOfLinesOfCredit
|
-754000000 | |
CY2017 | us-gaap |
Proceeds From Repayments Of Lines Of Credit
ProceedsFromRepaymentsOfLinesOfCredit
|
642000000 | |
CY2019 | us-gaap |
Proceeds From Issuance Of Senior Long Term Debt
ProceedsFromIssuanceOfSeniorLongTermDebt
|
997000000 | |
CY2019 | us-gaap |
Proceeds From Issuance Of Other Long Term Debt
ProceedsFromIssuanceOfOtherLongTermDebt
|
1100000000 | |
CY2018 | us-gaap |
Proceeds From Issuance Of Other Long Term Debt
ProceedsFromIssuanceOfOtherLongTermDebt
|
0 | |
CY2017 | us-gaap |
Proceeds From Issuance Of Other Long Term Debt
ProceedsFromIssuanceOfOtherLongTermDebt
|
32000000 | |
CY2019 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
13000000 | |
CY2018 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
8000000 | |
CY2017 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
9000000 | |
CY2019 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
995000000 | |
CY2018 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
170000000 | |
CY2017 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
734000000 | |
CY2019 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
150000000 | |
CY2017 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
277000000 | |
CY2019 | us-gaap |
Proceeds From Payments To Minority Shareholders
ProceedsFromPaymentsToMinorityShareholders
|
-55000000 | |
CY2018 | us-gaap |
Proceeds From Payments To Minority Shareholders
ProceedsFromPaymentsToMinorityShareholders
|
-26000000 | |
CY2018 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
602000000 | |
CY2017 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
532000000 | |
CY2017 | us-gaap |
Proceeds From Payments To Minority Shareholders
ProceedsFromPaymentsToMinorityShareholders
|
-51000000 | |
CY2019 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
397000000 | |
CY2018 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
-903000000 | |
CY2017 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
-479000000 | |
CY2019 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
|
-136000000 | |
CY2017 | us-gaap |
Dividends Common Stock
DividendsCommonStock
|
285000000 | |
CY2018 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
|
44000000 | |
CY2017 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
|
48000000 | |
CY2017 | us-gaap |
Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest
NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest
|
584000000 | |
CY2017 | us-gaap |
Profit Loss
ProfitLoss
|
592000000 | |
CY2017 | us-gaap |
Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
|
2.12 | |
CY2019 | us-gaap |
Payments Related To Tax Withholding For Share Based Compensation
PaymentsRelatedToTaxWithholdingForShareBasedCompensation
|
15000000 | |
CY2018 | us-gaap |
Payments Related To Tax Withholding For Share Based Compensation
PaymentsRelatedToTaxWithholdingForShareBasedCompensation
|
30000000 | |
CY2017 | us-gaap |
Payments Related To Tax Withholding For Share Based Compensation
PaymentsRelatedToTaxWithholdingForShareBasedCompensation
|
18000000 | |
CY2019 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
329000000 | |
CY2018 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
306000000 | |
CY2019 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
45000000 | |
CY2018 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
45000000 | |
CY2017 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
61000000 | |
CY2019 | wltw |
Payments For Cancellation Of Shares
PaymentsForCancellationOfShares
|
0 | |
CY2018 | wltw |
Payments For Cancellation Of Shares
PaymentsForCancellationOfShares
|
0 | |
CY2017 | wltw |
Payments For Cancellation Of Shares
PaymentsForCancellationOfShares
|
177000000 | |
CY2019 | wltw |
Payments For Deferred Contingent Consideration Financing Activities
PaymentsForDeferredContingentConsiderationFinancingActivities
|
57000000 | |
CY2018 | wltw |
Payments For Deferred Contingent Consideration Financing Activities
PaymentsForDeferredContingentConsiderationFinancingActivities
|
50000000 | |
CY2017 | wltw |
Payments For Deferred Contingent Consideration Financing Activities
PaymentsForDeferredContingentConsiderationFinancingActivities
|
65000000 | |
CY2019 | us-gaap |
Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
-2000000 | |
CY2018 | us-gaap |
Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
-41000000 | |
CY2017 | us-gaap |
Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
112000000 | |
CY2018Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
1033000000 | |
CY2017Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
1030000000 | |
CY2016Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
870000000 | |
CY2019Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
895000000 | |
CY2018Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
1033000000 | |
CY2017Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
1030000000 | |
CY2018Q4 | us-gaap |
Restricted Cash Current
RestrictedCashCurrent
|
0 | |
CY2017Q4 | us-gaap |
Restricted Cash Current
RestrictedCashCurrent
|
0 | |
CY2016Q4 | us-gaap |
Restricted Cash Current
RestrictedCashCurrent
|
0 | |
CY2016Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
10183000000 | |
CY2017 | us-gaap |
Stock Repurchased And Retired During Period Value
StockRepurchasedAndRetiredDuringPeriodValue
|
532000000 | |
CY2017 | us-gaap |
Stockholders Equity Other
StockholdersEquityOther
|
-177000000 | |
CY2017 | us-gaap |
Minority Interest Decrease From Distributions To Noncontrolling Interest Holders
MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
|
15000000 | |
CY2017 | us-gaap |
Minority Interest Decrease From Redemptions
MinorityInterestDecreaseFromRedemptions
|
-3000000 | |
CY2017 | wltw |
Adjustments To Additional Paid In Capital Foreign Currency Translation Gain Loss
AdjustmentsToAdditionalPaidInCapitalForeignCurrencyTranslationGainLoss
|
-10000000 | |
CY2017Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
10249000000 | |
CY2018 | us-gaap |
Stock Repurchased And Retired During Period Value
StockRepurchasedAndRetiredDuringPeriodValue
|
602000000 | |
CY2018 | us-gaap |
Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest
NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest
|
713000000 | |
CY2018 | us-gaap |
Profit Loss
ProfitLoss
|
715000000 | |
CY2018 | us-gaap |
Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
|
2.40 | |
CY2018 | us-gaap |
Dividends Common Stock
DividendsCommonStock
|
313000000 | |
CY2018 | us-gaap |
Minority Interest Decrease From Distributions To Noncontrolling Interest Holders
MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
|
24000000 | |
CY2018 | wltw |
Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Nonredeemable Noncontrolling Interest
OtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNonredeemableNoncontrollingInterest
|
-446000000 | |
CY2018 | us-gaap |
Stock Issued During Period Value Share Based Compensation
StockIssuedDuringPeriodValueShareBasedCompensation
|
45000000 | |
CY2018 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
-448000000 | |
CY2019 | us-gaap |
Dividends Common Stock
DividendsCommonStock
|
339000000 | |
CY2019 | us-gaap |
Minority Interest Decrease From Distributions To Noncontrolling Interest Holders
MinorityInterestDecreaseFromDistributionsToNoncontrollingInterestHolders
|
21000000 | |
CY2019 | us-gaap |
Revenues
Revenues
|
9039000000 | |
CY2019 | us-gaap |
Common Stock Dividends Per Share Declared
CommonStockDividendsPerShareDeclared
|
2.60 | |
CY2018 | wltw |
Adjustments To Additional Paid In Capital Sharebased Compensation And Net Settlements
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndNetSettlements
|
27000000 | |
CY2018 | wltw |
Adjustments To Additional Paid In Capital Foreign Currency Translation Gain Loss
AdjustmentsToAdditionalPaidInCapitalForeignCurrencyTranslationGainLoss
|
5000000 | |
CY2018Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
9971000000 | |
CY2019 | us-gaap |
Stock Repurchased And Retired During Period Value
StockRepurchasedAndRetiredDuringPeriodValue
|
150000000 | |
CY2019 | us-gaap |
Net Income Loss Including Portion Attributable To Nonredeemable Noncontrolling Interest
NetIncomeLossIncludingPortionAttributableToNonredeemableNoncontrollingInterest
|
1067000000 | |
CY2019 | us-gaap |
Profit Loss
ProfitLoss
|
1073000000 | |
CY2019 | wltw |
Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Nonredeemable Noncontrolling Interest
OtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNonredeemableNoncontrollingInterest
|
-230000000 | |
CY2019 | wltw |
Other Comprehensive Income Loss Net Of Tax Including Portion Attributable To Nonredeemable Noncontrolling Interest
OtherComprehensiveIncomeLossNetOfTaxIncludingPortionAttributableToNonredeemableNoncontrollingInterest
|
-230000000 | |
CY2019 | wltw |
Adjustments To Additional Paid In Capital Sharebased Compensation And Net Settlements
AdjustmentsToAdditionalPaidInCapitalSharebasedCompensationAndNetSettlements
|
32000000 | |
CY2019 | us-gaap |
Minority Interest Decrease From Redemptions
MinorityInterestDecreaseFromRedemptions
|
-7000000 | |
CY2019 | wltw |
Adjustments To Additional Paid In Capital Foreign Currency Translation Gain Loss
AdjustmentsToAdditionalPaidInCapitalForeignCurrencyTranslationGainLoss
|
1000000 | |
CY2019Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
10369000000 | |
CY2019 | us-gaap |
Nature Of Operations
NatureOfOperations
|
<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-weight:bold;font-size:10pt;font-family:Times New Roman;font-style:normal;text-transform:none;font-variant: normal;">Note 1 — Nature of Operations</p> <p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Willis Towers Watson plc is a leading global advisory, broking and solutions company that helps clients around the world turn risk into a path for growth. The Company has more than 45,000 employees and services clients in more than 140 countries. </p> <p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">We design and deliver solutions that manage risk, optimize benefits, cultivate talent, and expand the power of capital to protect and strengthen institutions and individuals. </p> <p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">Our risk management services include strategic risk consulting (including providing actuarial analysis), a variety of due diligence services, the provision of practical on-site risk control services (such as health and safety and property loss control consulting), and analytical and advisory services (such as hazard modeling and reinsurance optimization studies). We also assist our clients with planning for addressing incidents or crises when they occur. These services include contingency planning, security audits and product tampering plans. </p> <p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">We help our clients enhance business performance by delivering consulting services, technology and solutions that optimize benefits and cultivate talent. Our services and solutions encompass such areas as employee benefits, total rewards, talent and benefits outsourcing. In addition, we provide investment advice to help our clients develop disciplined and efficient strategies to meet their investment goals and expand the power of capital. </p> <p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">As an insurance broker, we act as an intermediary between our clients and insurance carriers by advising on their risk management requirements, helping them to determine the best means of managing risk and negotiating and placing insurance with insurance carriers through our global distribution network. </p> <p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">We operate a private Medicare marketplace in the U.S. through which, along with our active employee marketplace, we help our clients move to a more sustainable economic model by capping and controlling the costs associated with healthcare benefits. Additionally, with the acquisition of TRANZACT in July 2019 (see Note 3 – Acquisitions and Divestitures), we also provide direct-to-consumer sales of Medicare coverage. </p> <p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-size:10pt;font-family:Times New Roman;font-weight:normal;font-style:normal;text-transform:none;font-variant: normal;">We are not an insurance company, and therefore we do not underwrite insurable risks for our own account. We believe our broad perspective allows us to see the critical intersections between talent, assets and ideas - the dynamic formula that drives business performance.</p> | |
CY2019Q4 | dei |
Entity Number Of Employees
EntityNumberOfEmployees
|
45000 | |
CY2019Q4 | us-gaap |
Number Of Countries In Which Entity Operates
NumberOfCountriesInWhichEntityOperates
|
140 | |
CY2019Q1 | us-gaap |
Cumulative Effect Of New Accounting Principle In Period Of Adoption
CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
|
36000000 | |
CY2019 | us-gaap |
Use Of Estimates
UseOfEstimates
|
<p style="margin-top:9pt;margin-bottom:0pt;text-indent:0%;font-style:italic;font-size:10pt;font-family:Times New Roman;font-weight:normal;text-transform:none;font-variant: normal;"><span style="text-decoration:underline;">Use of Estimates</span><span style="font-style:normal;"> — These consolidated financial statements conform to U.S. GAAP, which requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities as well as disclosures of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenue and expenses during the reporting periods. Our estimates, judgments and assumptions are continually evaluated based on available information and experience. Because of the use of estimates inherent in the financial reporting process, actual results could differ from those estimates. Estimates are used when accounting for revenue recognition and related costs, the selection of useful lives of fixed and intangible assets, impairment testing, valuation of billed and unbilled receivables from clients, discretionary compensation, income taxes, pension assumptions, incurred but not reported claims, legal reserves and goodwill and intangible assets.</span></p> | |
CY2019Q1 | us-gaap |
Cumulative Effect Of New Accounting Principle In Period Of Adoption
CumulativeEffectOfNewAccountingPrincipleInPeriodOfAdoption
|
36000000 | |
wltw |
Dispositions Numberof Businesses
DispositionsNumberofBusinesses
|
5 | ||
CY2017 | us-gaap |
Disposal Group Not Discontinued Operation Gain Loss On Disposal
DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
|
13000000 | |
CY2017 | wltw |
Dispositions Revenuespriorto Sales
DispositionsRevenuespriortoSales
|
54000000 | |
CY2017 | wltw |
Dispositions Operating Incomeor Losspriorto Sales
DispositionsOperatingIncomeorLosspriortoSales
|
13000000 | |
CY2019 | us-gaap |
Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
|
8941000000 | |
CY2018 | us-gaap |
Revenue From Contract With Customer Excluding Assessed Tax
RevenueFromContractWithCustomerExcludingAssessedTax
|
8413000000 | |
CY2019 | us-gaap |
Interest And Other Income
InterestAndOtherIncome
|
98000000 | |
CY2018 | us-gaap |
Interest And Other Income
InterestAndOtherIncome
|
100000000 | |
CY2019Q4 | wltw |
Percentage Of Lease Denominated In Major Currencies
PercentageOfLeaseDenominatedInMajorCurrencies
|
0.90 | |
CY2019 | us-gaap |
Number Of Reporting Units
NumberOfReportingUnits
|
9 | |
CY2018 | us-gaap |
Revenues
Revenues
|
8513000000 | |
CY2018Q4 | us-gaap |
Contract With Customer Liability
ContractWithCustomerLiability
|
448000000 | |
CY2019Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
2621000000 | |
CY2018Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
2379000000 | |
CY2019Q4 | us-gaap |
Accounts Receivable Net Noncurrent
AccountsReceivableNetNoncurrent
|
30000000 | |
CY2018Q4 | us-gaap |
Accounts Receivable Net Noncurrent
AccountsReceivableNetNoncurrent
|
20000000 | |
CY2019Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
|
37000000 | |
CY2018Q4 | us-gaap |
Allowance For Doubtful Accounts Receivable
AllowanceForDoubtfulAccountsReceivable
|
40000000 | |
CY2019Q4 | us-gaap |
Billed Contract Receivables
BilledContractReceivables
|
1831000000 | |
CY2018Q4 | us-gaap |
Billed Contract Receivables
BilledContractReceivables
|
1702000000 | |
CY2019Q4 | us-gaap |
Unbilled Receivables Current
UnbilledReceivablesCurrent
|
434000000 | |
CY2018Q4 | us-gaap |
Unbilled Receivables Current
UnbilledReceivablesCurrent
|
356000000 | |
CY2019Q4 | us-gaap |
Contract With Customer Asset Net Current
ContractWithCustomerAssetNetCurrent
|
356000000 | |
CY2018Q4 | us-gaap |
Contract With Customer Asset Net Current
ContractWithCustomerAssetNetCurrent
|
321000000 | |
CY2019Q4 | us-gaap |
Contract With Customer Asset Net Noncurrent
ContractWithCustomerAssetNetNoncurrent
|
105000000 | |
CY2018Q4 | us-gaap |
Contract With Customer Asset Net Noncurrent
ContractWithCustomerAssetNetNoncurrent
|
3000000 | |
CY2019Q4 | us-gaap |
Contract With Customer Liability
ContractWithCustomerLiability
|
538000000 | |
CY2019 | us-gaap |
Contract With Customer Performance Obligation Satisfied In Previous Period
ContractWithCustomerPerformanceObligationSatisfiedInPreviousPeriod
|
32000000 | |
CY2019Q4 | us-gaap |
Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
|
492000000 | |
CY2019Q4 | us-gaap |
Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
|
367000000 | |
CY2019Q4 | us-gaap |
Revenue Remaining Performance Obligation
RevenueRemainingPerformanceObligation
|
420000000 | |
CY2018Q4 | us-gaap |
Capitalized Contract Cost Net
CapitalizedContractCostNet
|
148000000 | |
CY2017Q4 | us-gaap |
Capitalized Contract Cost Net
CapitalizedContractCostNet
|
126000000 | |
CY2019 | wltw |
Capitalized Contract Cost Additions
CapitalizedContractCostAdditions
|
488000000 | |
CY2018 | wltw |
Capitalized Contract Cost Additions
CapitalizedContractCostAdditions
|
465000000 | |
CY2019 | us-gaap |
Capitalized Contract Cost Amortization
CapitalizedContractCostAmortization
|
460000000 | |
CY2018 | us-gaap |
Capitalized Contract Cost Amortization
CapitalizedContractCostAmortization
|
442000000 | |
CY2019 | us-gaap |
Capitalized Contract Cost Impairment Loss
CapitalizedContractCostImpairmentLoss
|
0 | |
CY2018 | wltw |
Capitalized Contract Cost Foreign Exchange Translation Gain Loss
CapitalizedContractCostForeignExchangeTranslationGainLoss
|
-1000000 | |
CY2019Q4 | us-gaap |
Capitalized Contract Cost Net
CapitalizedContractCostNet
|
177000000 | |
CY2018Q4 | us-gaap |
Capitalized Contract Cost Net
CapitalizedContractCostNet
|
148000000 | |
CY2019 | us-gaap |
Number Of Operating Segments
NumberOfOperatingSegments
|
4 | |
CY2019 | us-gaap |
Number Of Reportable Segments
NumberOfReportableSegments
|
4 | |
CY2019 | us-gaap |
Revenues
Revenues
|
9039000000 | |
CY2018 | us-gaap |
Revenues
Revenues
|
8513000000 | |
CY2017 | us-gaap |
Revenues
Revenues
|
8202000000 | |
CY2019 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
1329000000 | |
CY2018 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
809000000 | |
CY2017 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
516000000 | |
CY2019 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
1322000000 | |
CY2018 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
851000000 | |
CY2017 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
492000000 | |
CY2019 | us-gaap |
Revenues
Revenues
|
9039000000 | |
CY2018 | us-gaap |
Revenues
Revenues
|
8513000000 | |
CY2017 | us-gaap |
Revenues
Revenues
|
8202000000 | |
CY2019Q4 | us-gaap |
Noncurrent Assets
NoncurrentAssets
|
18317000000 | |
CY2018Q4 | us-gaap |
Noncurrent Assets
NoncurrentAssets
|
15906000000 | |
CY2017Q4 | us-gaap |
Noncurrent Assets
NoncurrentAssets
|
16551000000 | |
CY2017 | us-gaap |
Restructuring Charges
RestructuringCharges
|
132000000 | |
CY2017 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.35 | |
CY2019 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
1322000000 | |
CY2018 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
851000000 | |
CY2017 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
6000000 | |
CY2019 | us-gaap |
Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
|
15000000 | |
CY2018 | us-gaap |
Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
|
6000000 | |
CY2017 | us-gaap |
Deferred Foreign Income Tax Expense Benefit
DeferredForeignIncomeTaxExpenseBenefit
|
-9000000 | |
CY2019 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
1322000000 | |
CY2018 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
851000000 | |
CY2017 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Minority Interest And Income Loss From Equity Method Investments
IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
|
492000000 | |
CY2019 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
108000000 | |
CY2018 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
98000000 | |
CY2017 | us-gaap |
Current Federal Tax Expense Benefit
CurrentFederalTaxExpenseBenefit
|
65000000 | |
CY2019 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
43000000 | |
CY2018 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
25000000 | |
CY2017 | us-gaap |
Current State And Local Tax Expense Benefit
CurrentStateAndLocalTaxExpenseBenefit
|
7000000 | |
CY2019 | us-gaap |
Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
|
43000000 | |
CY2018 | us-gaap |
Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
|
16000000 | |
CY2017 | us-gaap |
Current Foreign Tax Expense Benefit
CurrentForeignTaxExpenseBenefit
|
14000000 | |
CY2019 | wltw |
Current Other Jurisdictions Tax Expense Benefit
CurrentOtherJurisdictionsTaxExpenseBenefit
|
127000000 | |
CY2018 | wltw |
Current Other Jurisdictions Tax Expense Benefit
CurrentOtherJurisdictionsTaxExpenseBenefit
|
112000000 | |
CY2017 | wltw |
Current Other Jurisdictions Tax Expense Benefit
CurrentOtherJurisdictionsTaxExpenseBenefit
|
99000000 | |
CY2019 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
321000000 | |
CY2018 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
251000000 | |
CY2017 | us-gaap |
Current Income Tax Expense Benefit
CurrentIncomeTaxExpenseBenefit
|
185000000 | |
CY2019 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
-56000000 | |
CY2018 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
-79000000 | |
CY2017 | us-gaap |
Deferred Federal Income Tax Expense Benefit
DeferredFederalIncomeTaxExpenseBenefit
|
-268000000 | |
CY2019 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
-14000000 | |
CY2018 | us-gaap |
Deferred State And Local Income Tax Expense Benefit
DeferredStateAndLocalIncomeTaxExpenseBenefit
|
-12000000 | |
CY2019 | wltw |
Deferred Other Jurisdictions Tax Expense Benefit
DeferredOtherJurisdictionsTaxExpenseBenefit
|
-17000000 | |
CY2018 | wltw |
Deferred Other Jurisdictions Tax Expense Benefit
DeferredOtherJurisdictionsTaxExpenseBenefit
|
-30000000 | |
CY2017 | wltw |
Deferred Other Jurisdictions Tax Expense Benefit
DeferredOtherJurisdictionsTaxExpenseBenefit
|
-14000000 | |
CY2019 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
-72000000 | |
CY2018 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
-115000000 | |
CY2017 | us-gaap |
Deferred Income Tax Expense Benefit
DeferredIncomeTaxExpenseBenefit
|
-285000000 | |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
249000000 | |
CY2018 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
136000000 | |
CY2017 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-100000000 | |
CY2017 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
492000000 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.21 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.21 | |
CY2017 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
-204000000 | |
CY2019 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
5000000 | |
CY2019 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
278000000 | |
CY2018 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
5000000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Other Adjustments
IncomeTaxReconciliationOtherAdjustments
|
-4000000 | |
CY2018 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
179000000 | |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
249000000 | |
CY2018 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
136000000 | |
CY2017 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-100000000 | |
CY2017 | wltw |
Tax Cuts And Jobs Act Of2017 Incomplete Accounting Change In Federal Corporate Tax Rate And Remeasurement Of Deferred Tax Liabilities Related To Acquisition Based Intangibles Provisional Income Tax Benefit
TaxCutsAndJobsActOf2017IncompleteAccountingChangeInFederalCorporateTaxRateAndRemeasurementOfDeferredTaxLiabilitiesRelatedToAcquisitionBasedIntangiblesProvisionalIncomeTaxBenefit
|
-208000000 | |
CY2018 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.21 | |
CY2017 | us-gaap |
Income Tax Reconciliation Income Tax Expense Benefit At Federal Statutory Income Tax Rate
IncomeTaxReconciliationIncomeTaxExpenseBenefitAtFederalStatutoryIncomeTaxRate
|
172000000 | |
CY2019 | us-gaap |
Income Tax Reconciliation Nondeductible Expense
IncomeTaxReconciliationNondeductibleExpense
|
34000000 | |
CY2019 | us-gaap |
Effective Income Tax Rate Reconciliation At Federal Statutory Income Tax Rate
EffectiveIncomeTaxRateReconciliationAtFederalStatutoryIncomeTaxRate
|
0.21 | |
CY2019Q4 | wltw |
Accrued Expenses Not Currently Deductible
AccruedExpensesNotCurrentlyDeductible
|
201000000 | |
CY2018Q4 | wltw |
Accrued Expenses Not Currently Deductible
AccruedExpensesNotCurrentlyDeductible
|
177000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
|
116000000 | |
CY2019 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
0 | |
CY2018 | us-gaap |
Income Tax Reconciliation Other Reconciling Items
IncomeTaxReconciliationOtherReconcilingItems
|
0 | |
CY2018 | us-gaap |
Income Tax Reconciliation Nondeductible Expense
IncomeTaxReconciliationNondeductibleExpense
|
44000000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Nondeductible Expense
IncomeTaxReconciliationNondeductibleExpense
|
68000000 | |
CY2019 | wltw |
Effective Income Tax Rate Reconciliation Non Deductible Acquisition Costs
EffectiveIncomeTaxRateReconciliationNonDeductibleAcquisitionCosts
|
2000000 | |
CY2018 | wltw |
Effective Income Tax Rate Reconciliation Non Deductible Acquisition Costs
EffectiveIncomeTaxRateReconciliationNonDeductibleAcquisitionCosts
|
2000000 | |
CY2017 | wltw |
Effective Income Tax Rate Reconciliation Non Deductible Acquisition Costs
EffectiveIncomeTaxRateReconciliationNonDeductibleAcquisitionCosts
|
11000000 | |
CY2019 | us-gaap |
Income Tax Reconciliation Disposition Of Business
IncomeTaxReconciliationDispositionOfBusiness
|
0 | |
CY2018 | us-gaap |
Income Tax Reconciliation Disposition Of Business
IncomeTaxReconciliationDispositionOfBusiness
|
-1000000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Disposition Of Business
IncomeTaxReconciliationDispositionOfBusiness
|
11000000 | |
CY2019 | us-gaap |
Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
|
0 | |
CY2018 | us-gaap |
Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
|
-7000000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Change In Enacted Tax Rate
IncomeTaxReconciliationChangeInEnactedTaxRate
|
0 | |
CY2019 | wltw |
Effective Income Tax Rate Reconciliation Effect Of Foreign Exchange And Other Differences
EffectiveIncomeTaxRateReconciliationEffectOfForeignExchangeAndOtherDifferences
|
-1000000 | |
CY2018 | wltw |
Effective Income Tax Rate Reconciliation Effect Of Foreign Exchange And Other Differences
EffectiveIncomeTaxRateReconciliationEffectOfForeignExchangeAndOtherDifferences
|
-1000000 | |
CY2017 | wltw |
Effective Income Tax Rate Reconciliation Effect Of Foreign Exchange And Other Differences
EffectiveIncomeTaxRateReconciliationEffectOfForeignExchangeAndOtherDifferences
|
3000000 | |
CY2019 | wltw |
Effective Income Tax Rate Reconciliation Non Deductible Foreign Exchange Loss
EffectiveIncomeTaxRateReconciliationNonDeductibleForeignExchangeLoss
|
0 | |
CY2018 | wltw |
Effective Income Tax Rate Reconciliation Non Deductible Foreign Exchange Loss
EffectiveIncomeTaxRateReconciliationNonDeductibleForeignExchangeLoss
|
0 | |
CY2017 | wltw |
Effective Income Tax Rate Reconciliation Non Deductible Foreign Exchange Loss
EffectiveIncomeTaxRateReconciliationNonDeductibleForeignExchangeLoss
|
2000000 | |
CY2019 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
6000000 | |
CY2018 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
80000000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
-13000000 | |
CY2019 | us-gaap |
Income Tax Reconciliation Deductions Other
IncomeTaxReconciliationDeductionsOther
|
93000000 | |
CY2018 | us-gaap |
Income Tax Reconciliation Deductions Other
IncomeTaxReconciliationDeductionsOther
|
99000000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Deductions Other
IncomeTaxReconciliationDeductionsOther
|
97000000 | |
CY2019 | us-gaap |
Income Tax Reconciliation Foreign Income Tax Rate Differential
IncomeTaxReconciliationForeignIncomeTaxRateDifferential
|
2000000 | |
CY2018 | us-gaap |
Income Tax Reconciliation Foreign Income Tax Rate Differential
IncomeTaxReconciliationForeignIncomeTaxRateDifferential
|
2000000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Foreign Income Tax Rate Differential
IncomeTaxReconciliationForeignIncomeTaxRateDifferential
|
-69000000 | |
CY2019 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
21000000 | |
CY2018 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
77000000 | |
CY2017 | us-gaap |
Income Tax Reconciliation State And Local Income Taxes
IncomeTaxReconciliationStateAndLocalIncomeTaxes
|
-6000000 | |
CY2019 | wltw |
Income Tax Reconciliation Global Intangible Low Taxed Income
IncomeTaxReconciliationGlobalIntangibleLowTaxedIncome
|
7000000 | |
CY2018 | wltw |
Income Tax Reconciliation Global Intangible Low Taxed Income
IncomeTaxReconciliationGlobalIntangibleLowTaxedIncome
|
15000000 | |
CY2017 | wltw |
Income Tax Reconciliation Global Intangible Low Taxed Income
IncomeTaxReconciliationGlobalIntangibleLowTaxedIncome
|
0 | |
CY2018Q4 | us-gaap |
Deferred Tax Assets Operating Loss Carryforwards
DeferredTaxAssetsOperatingLossCarryforwards
|
91000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Capital Loss Carryforwards
DeferredTaxAssetsCapitalLossCarryforwards
|
33000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Assets Capital Loss Carryforwards
DeferredTaxAssetsCapitalLossCarryforwards
|
30000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits
|
326000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Postretirement Benefits
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsPostretirementBenefits
|
285000000 | |
CY2019Q4 | wltw |
Deferred Tax Assets Operating Lease Liabilities
DeferredTaxAssetsOperatingLeaseLiabilities
|
181000000 | |
CY2018Q4 | wltw |
Deferred Tax Assets Operating Lease Liabilities
DeferredTaxAssetsOperatingLeaseLiabilities
|
0 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits
|
86000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Assets Derivative Instruments
DeferredTaxAssetsDerivativeInstruments
|
1000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
961000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefits
|
82000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
|
18000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Assets Tax Deferred Expense Compensation And Benefits Share Based Compensation Cost
DeferredTaxAssetsTaxDeferredExpenseCompensationAndBenefitsShareBasedCompensationCost
|
22000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Derivative Instruments
DeferredTaxAssetsDerivativeInstruments
|
0 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
76000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
81000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Assets Gross
DeferredTaxAssetsGross
|
688000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
885000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
607000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets
DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets
|
865000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities Goodwill And Intangible Assets Intangible Assets
DeferredTaxLiabilitiesGoodwillAndIntangibleAssetsIntangibleAssets
|
825000000 | |
CY2019Q4 | wltw |
Deferred Tax Liabilities Operating Lease Right Of Use Assets
DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets
|
177000000 | |
CY2018Q4 | wltw |
Deferred Tax Liabilities Operating Lease Right Of Use Assets
DeferredTaxLiabilitiesOperatingLeaseRightOfUseAssets
|
0 | |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
53000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities Property Plant And Equipment
DeferredTaxLiabilitiesPropertyPlantAndEquipment
|
37000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Prepaid Expenses
DeferredTaxLiabilitiesPrepaidExpenses
|
121000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities Prepaid Expenses
DeferredTaxLiabilitiesPrepaidExpenses
|
101000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Derivatives
DeferredTaxLiabilitiesDerivatives
|
3000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities Derivatives
DeferredTaxLiabilitiesDerivatives
|
0 | |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Tax Deferred Income
DeferredTaxLiabilitiesTaxDeferredIncome
|
120000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities Tax Deferred Income
DeferredTaxLiabilitiesTaxDeferredIncome
|
144000000 | |
CY2019Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
1339000000 | |
CY2018Q4 | us-gaap |
Deferred Income Tax Liabilities
DeferredIncomeTaxLiabilities
|
1107000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
454000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
500000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Net Noncurrent
DeferredTaxAssetsNetNoncurrent
|
72000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Assets Net Noncurrent
DeferredTaxAssetsNetNoncurrent
|
59000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Liabilities Gross Noncurrent
DeferredTaxLiabilitiesGrossNoncurrent
|
526000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities Gross Noncurrent
DeferredTaxLiabilitiesGrossNoncurrent
|
559000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Liabilities
DeferredTaxLiabilities
|
500000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Net
DeferredTaxAssetsNet
|
885000000 | |
CY2019 | us-gaap |
Valuation Allowance Deferred Tax Asset Change In Amount
ValuationAllowanceDeferredTaxAssetChangeInAmount
|
-5000000 | |
CY2018 | us-gaap |
Valuation Allowance Deferred Tax Asset Change In Amount
ValuationAllowanceDeferredTaxAssetChangeInAmount
|
-81000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
76000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Assets Valuation Allowance
DeferredTaxAssetsValuationAllowance
|
81000000 | |
CY2019 | us-gaap |
Valuation Allowance Deferred Tax Asset Change In Amount
ValuationAllowanceDeferredTaxAssetChangeInAmount
|
-5000000 | |
CY2018 | us-gaap |
Valuation Allowance Deferred Tax Asset Change In Amount
ValuationAllowanceDeferredTaxAssetChangeInAmount
|
-81000000 | |
CY2017 | us-gaap |
Income Tax Reconciliation Change In Deferred Tax Assets Valuation Allowance
IncomeTaxReconciliationChangeInDeferredTaxAssetsValuationAllowance
|
-13000000 | |
CY2018 | wltw |
Additional Repatriation Amount Previously Deemed Indefinitely Reinvested
AdditionalRepatriationAmountPreviouslyDeemedIndefinitelyReinvested
|
2100000000 | |
CY2018 | us-gaap |
Income Tax Reconciliation Repatriation Of Foreign Earnings
IncomeTaxReconciliationRepatriationOfForeignEarnings
|
11000000 | |
CY2019Q4 | us-gaap |
Undistributed Earnings Of Foreign Subsidiaries
UndistributedEarningsOfForeignSubsidiaries
|
8200000000 | |
CY2019Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
49000000 | |
CY2018Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
49000000 | |
CY2017Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
59000000 | |
CY2016Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
56000000 | |
CY2019 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
|
2000000 | |
CY2018 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
|
2000000 | |
CY2017 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromPriorPeriodTaxPositions
|
2000000 | |
CY2019 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
1000000 | |
CY2018Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
49000000 | |
CY2018 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
4000000 | |
CY2017 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Prior Period Tax Positions
UnrecognizedTaxBenefitsDecreasesResultingFromPriorPeriodTaxPositions
|
5000000 | |
CY2017Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
59000000 | |
CY2019Q4 | us-gaap |
Decrease In Unrecognized Tax Benefits Is Reasonably Possible
DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible
|
3000000 | |
CY2017 | us-gaap |
Unrecognized Tax Benefits Decreases Resulting From Settlements With Taxing Authorities
UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities
|
0 | |
CY2019 | us-gaap |
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations
UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
|
1000000 | |
CY2018 | us-gaap |
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations
UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
|
5000000 | |
CY2018 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
3000000 | |
CY2017 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
9000000 | |
CY2019 | wltw |
Unrecognized Tax Benefits Other Increase Decrease
UnrecognizedTaxBenefitsOtherIncreaseDecrease
|
0 | |
CY2017 | us-gaap |
Unrecognized Tax Benefits Reductions Resulting From Lapse Of Applicable Statute Of Limitations
UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
|
2000000 | |
CY2019 | us-gaap |
Unrecognized Tax Benefits Increases Resulting From Current Period Tax Positions
UnrecognizedTaxBenefitsIncreasesResultingFromCurrentPeriodTaxPositions
|
0 | |
CY2018 | wltw |
Unrecognized Tax Benefits Other Increase Decrease
UnrecognizedTaxBenefitsOtherIncreaseDecrease
|
-2000000 | |
CY2018Q4 | us-gaap |
Decrease In Unrecognized Tax Benefits Is Reasonably Possible
DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible
|
2000000 | |
CY2018Q4 | us-gaap |
Unrecognized Tax Benefits Interest On Income Taxes Accrued
UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
|
3000000 | |
CY2017 | wltw |
Unrecognized Tax Benefits Other Increase Decrease
UnrecognizedTaxBenefitsOtherIncreaseDecrease
|
-1000000 | |
CY2019Q4 | us-gaap |
Unrecognized Tax Benefits
UnrecognizedTaxBenefits
|
49000000 | |
CY2017Q4 | us-gaap |
Decrease In Unrecognized Tax Benefits Is Reasonably Possible
DecreaseInUnrecognizedTaxBenefitsIsReasonablyPossible
|
3000000 | |
CY2019Q4 | us-gaap |
Unrecognized Tax Benefits Interest On Income Taxes Accrued
UnrecognizedTaxBenefitsInterestOnIncomeTaxesAccrued
|
4000000 | |
CY2018Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
768000000 | |
CY2019 | us-gaap |
Depreciation
Depreciation
|
240000000 | |
CY2019 | us-gaap |
Accumulated Depreciation Depletion And Amortization Sale Of Property Plant And Equipment1
AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment1
|
120000000 | |
CY2019 | wltw |
Accumulated Depreciation Depletion And Amortization Foreign Exchange
AccumulatedDepreciationDepletionAndAmortizationForeignExchange
|
8000000 | |
CY2019Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
896000000 | |
CY2018Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
942000000 | |
CY2018 | us-gaap |
Accumulated Depreciation Depletion And Amortization Reclassifications From Property Plant And Equipment1
AccumulatedDepreciationDepletionAndAmortizationReclassificationsFromPropertyPlantAndEquipment1
|
19000000 | |
CY2018 | wltw |
Accumulated Depreciation Depletion And Amortization Foreign Exchange
AccumulatedDepreciationDepletionAndAmortizationForeignExchange
|
-26000000 | |
CY2018 | us-gaap |
Goodwill Acquired During Period
GoodwillAcquiredDuringPeriod
|
38000000 | |
CY2017Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
1862000000 | |
CY2018 | us-gaap |
Property Plant And Equipment Additions
PropertyPlantAndEquipmentAdditions
|
319000000 | |
CY2018 | us-gaap |
Property Plant And Equipment Disposals
PropertyPlantAndEquipmentDisposals
|
313000000 | |
CY2018 | wltw |
Reclassification Of Property Plant And Equipment
ReclassificationOfPropertyPlantAndEquipment
|
-102000000 | |
CY2018 | wltw |
Property Plant And Equipment Increase Decrease Due To Foreign Exchange
PropertyPlantAndEquipmentIncreaseDecreaseDueToForeignExchange
|
-56000000 | |
CY2018Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
1710000000 | |
CY2019 | us-gaap |
Property Plant And Equipment Additions
PropertyPlantAndEquipmentAdditions
|
336000000 | |
CY2019 | wltw |
Property Plant And Equipment Acquisitions
PropertyPlantAndEquipmentAcquisitions
|
10000000 | |
CY2019 | us-gaap |
Property Plant And Equipment Disposals
PropertyPlantAndEquipmentDisposals
|
132000000 | |
CY2019 | wltw |
Reclassification Of Property Plant And Equipment
ReclassificationOfPropertyPlantAndEquipment
|
-3000000 | |
CY2019 | wltw |
Property Plant And Equipment Increase Decrease Due To Foreign Exchange
PropertyPlantAndEquipmentIncreaseDecreaseDueToForeignExchange
|
21000000 | |
CY2019Q4 | us-gaap |
Property Plant And Equipment Gross
PropertyPlantAndEquipmentGross
|
1942000000 | |
CY2017Q4 | us-gaap |
Accumulated Depreciation Depletion And Amortization Property Plant And Equipment
AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
|
877000000 | |
CY2018 | us-gaap |
Depreciation
Depreciation
|
213000000 | |
CY2018 | us-gaap |
Accumulated Depreciation Depletion And Amortization Sale Of Property Plant And Equipment1
AccumulatedDepreciationDepletionAndAmortizationSaleOfPropertyPlantAndEquipment1
|
277000000 | |
CY2019Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
1046000000 | |
CY2019Q4 | wltw |
Finance Lease Right Of Use Asset Gross
FinanceLeaseRightOfUseAssetGross
|
29000000 | |
CY2018Q4 | wltw |
Finance Lease Right Of Use Asset Gross
FinanceLeaseRightOfUseAssetGross
|
31000000 | |
CY2019Q4 | wltw |
Finance Lease Right Of Use Asset Accumulated Depreciation
FinanceLeaseRightOfUseAssetAccumulatedDepreciation
|
19000000 | |
CY2018Q4 | wltw |
Finance Lease Right Of Use Asset Accumulated Depreciation
FinanceLeaseRightOfUseAssetAccumulatedDepreciation
|
16000000 | |
CY2019Q4 | us-gaap |
Finance Lease Right Of Use Asset
FinanceLeaseRightOfUseAsset
|
10000000 | |
CY2018Q4 | us-gaap |
Finance Lease Right Of Use Asset
FinanceLeaseRightOfUseAsset
|
15000000 | |
CY2017Q4 | us-gaap |
Goodwill Gross
GoodwillGross
|
11011000000 | |
CY2017Q4 | us-gaap |
Goodwill Impaired Accumulated Impairment Loss
GoodwillImpairedAccumulatedImpairmentLoss
|
492000000 | |
CY2017Q4 | us-gaap |
Goodwill
Goodwill
|
10519000000 | |
CY2018 | us-gaap |
Goodwill Transfers
GoodwillTransfers
|
0 | |
CY2018 | us-gaap |
Finite Lived Intangible Assets Foreign Currency Translation Gain Loss
FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss
|
-60000000 | |
CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
|
3318000000 | |
CY2019 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
489000000 | |
CY2017 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
154000000 | |
CY2018 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
534000000 | |
CY2017 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
581000000 | |
CY2018Q4 | us-gaap |
Below Market Lease Net
BelowMarketLeaseNet
|
21000000 | |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Gross
FiniteLivedIntangibleAssetsGross
|
5967000000 | |
CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Gross
FiniteLivedIntangibleAssetsGross
|
5318000000 | |
CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Accumulated Amortization
FiniteLivedIntangibleAssetsAccumulatedAmortization
|
2000000000 | |
CY2019Q4 | us-gaap |
Below Market Lease Gross
BelowMarketLeaseGross
|
0 | |
CY2019Q4 | us-gaap |
Below Market Lease Accumulated Amortization
BelowMarketLeaseAccumulatedAmortization
|
0 | |
CY2019 | us-gaap |
Finite Lived Intangible Asset Useful Life
FiniteLivedIntangibleAssetUsefulLife
|
P13Y8M12D | |
CY2017Q4 | us-gaap |
Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
|
3882000000 | |
CY2018 | us-gaap |
Finitelived Intangible Assets Acquired1
FinitelivedIntangibleAssetsAcquired1
|
39000000 | |
CY2018 | wltw |
Finite Lived Intangible Assets Disposed
FiniteLivedIntangibleAssetsDisposed
|
7000000 | |
CY2018 | us-gaap |
Goodwill Written Off Related To Sale Of Business Unit
GoodwillWrittenOffRelatedToSaleOfBusinessUnit
|
5000000 | |
CY2018 | us-gaap |
Goodwill Foreign Currency Translation Gain Loss
GoodwillForeignCurrencyTranslationGainLoss
|
-87000000 | |
CY2018Q4 | us-gaap |
Goodwill Gross
GoodwillGross
|
10957000000 | |
CY2018Q4 | us-gaap |
Goodwill Impaired Accumulated Impairment Loss
GoodwillImpairedAccumulatedImpairmentLoss
|
492000000 | |
CY2018Q4 | us-gaap |
Goodwill
Goodwill
|
10465000000 | |
CY2019 | us-gaap |
Goodwill Acquired During Period
GoodwillAcquiredDuringPeriod
|
737000000 | |
CY2019 | us-gaap |
Goodwill Written Off Related To Sale Of Business Unit
GoodwillWrittenOffRelatedToSaleOfBusinessUnit
|
6000000 | |
CY2019 | us-gaap |
Goodwill Foreign Currency Translation Gain Loss
GoodwillForeignCurrencyTranslationGainLoss
|
-2000000 | |
CY2019Q4 | us-gaap |
Goodwill Gross
GoodwillGross
|
11686000000 | |
CY2019Q4 | us-gaap |
Goodwill Impaired Accumulated Impairment Loss
GoodwillImpairedAccumulatedImpairmentLoss
|
492000000 | |
CY2019Q4 | us-gaap |
Goodwill
Goodwill
|
11194000000 | |
CY2018Q4 | us-gaap |
Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
|
3318000000 | |
CY2019 | wltw |
Finite Lived Intangible Assets Reclassification Of Favorable Lease Agreement Assets To Right Of Use Assets
FiniteLivedIntangibleAssetsReclassificationOfFavorableLeaseAgreementAssetsToRightOfUseAssets
|
-9000000 | |
CY2019 | us-gaap |
Finitelived Intangible Assets Acquired1
FinitelivedIntangibleAssetsAcquired1
|
660000000 | |
CY2019 | wltw |
Finite Lived Intangible Assets Disposed
FiniteLivedIntangibleAssetsDisposed
|
10000000 | |
CY2019 | wltw |
Amortization Of Intangible Assets Including Off Market Leases
AmortizationOfIntangibleAssetsIncludingOffMarketLeases
|
489000000 | |
CY2019 | us-gaap |
Finite Lived Intangible Assets Foreign Currency Translation Gain Loss
FiniteLivedIntangibleAssetsForeignCurrencyTranslationGainLoss
|
8000000 | |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
|
3478000000 | |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Next Twelve Months
FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths
|
455000000 | |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Two
FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo
|
378000000 | |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Three
FiniteLivedIntangibleAssetsAmortizationExpenseYearThree
|
319000000 | |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Four
FiniteLivedIntangibleAssetsAmortizationExpenseYearFour
|
269000000 | |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense Year Five
FiniteLivedIntangibleAssetsAmortizationExpenseYearFive
|
236000000 | |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Amortization Expense After Year Five
FiniteLivedIntangibleAssetsAmortizationExpenseAfterYearFive
|
1821000000 | |
CY2019Q4 | us-gaap |
Finite Lived Intangible Assets Net
FiniteLivedIntangibleAssetsNet
|
3478000000 | |
CY2018Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
4389000000 | |
CY2019 | us-gaap |
Variable Lease Cost
VariableLeaseCost
|
51000000 | |
CY2019 | us-gaap |
Derivative Instruments Gain Loss Reclassification From Accumulated Oci To Income Estimated Net Amount To Be Transferred
DerivativeInstrumentsGainLossReclassificationFromAccumulatedOCIToIncomeEstimatedNetAmountToBeTransferred
|
2000000 | |
CY2019 | us-gaap |
Sublease Income
SubleaseIncome
|
16000000 | |
CY2018Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
186000000 | |
CY2019 | us-gaap |
Lease Cost
LeaseCost
|
233000000 | |
CY2019 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Settlements
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilitySettlements
|
45000000 | |
CY2019 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Earnings
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInEarnings
|
-3000000 | |
CY2019 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Gain Loss Included In Other Comprehensive Income
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityGainLossIncludedInOtherComprehensiveIncome
|
1000000 | |
CY2019Q4 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value
FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
|
17000000 | |
CY2019 | wltw |
Fair Value Level One Level Two Or Level Three Transfers Amount
FairValueLevelOneLevelTwoOrLevelThreeTransfersAmount
|
0 | |
CY2018 | wltw |
Fair Value Level One Level Two Or Level Three Transfers Amount
FairValueLevelOneLevelTwoOrLevelThreeTransfersAmount
|
0 | |
CY2018Q3 | wltw |
Debt Instrument Interest Accrual Date Description
DebtInstrumentInterestAccrualDateDescription
|
Interest has accrued on both the 2028 senior notes and 2048 senior notes from September 10, 2018 and is paid in cash on March 15 and September 15 of each year. | |
CY2018Q3 | us-gaap |
Proceeds From Debt Net Of Issuance Costs
ProceedsFromDebtNetOfIssuanceCosts
|
989000000 | |
CY2019Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Next Twelve Months
LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths
|
534000000 | |
CY2019Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Two
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo
|
1160000000 | |
CY2019Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Three
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree
|
786000000 | |
CY2019Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Four
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour
|
416000000 | |
CY2019Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal In Year Five
LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive
|
785000000 | |
CY2019Q4 | us-gaap |
Long Term Debt Maturities Repayments Of Principal After Year Five
LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive
|
4336000000 | |
CY2019Q4 | us-gaap |
Long Term Debt
LongTermDebt
|
8017000000 | |
CY2019 | us-gaap |
Interest Expense
InterestExpense
|
234000000 | |
CY2018 | us-gaap |
Interest Expense
InterestExpense
|
208000000 | |
CY2017 | us-gaap |
Interest Expense
InterestExpense
|
188000000 | |
CY2018Q4 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliations Recurring Basis Liability Value
FairValueMeasurementWithUnobservableInputsReconciliationsRecurringBasisLiabilityValue
|
51000000 | |
CY2019 | us-gaap |
Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Liability Purchases
FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityPurchases
|
13000000 | |
CY2019 | wltw |
Defined Benefit Plans Percentage Of Obligation From Plans
DefinedBenefitPlansPercentageOfObligationFromPlans
|
0.99 | |
CY2018 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
243000000 | |
CY2017 | us-gaap |
Lease And Rental Expense
LeaseAndRentalExpense
|
261000000 | |
CY2019Q1 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
1200000000 | |
CY2018Q4 | wltw |
Defined Benefit Plan Other Adjustments
DefinedBenefitPlanOtherAdjustments
|
12000000 | |
CY2019Q4 | wltw |
Defined Benefit Plan Fair Value Of Plan Assets Liabilities Reconciliation
DefinedBenefitPlanFairValueOfPlanAssetsLiabilitiesReconciliation
|
9547000000 | |
CY2018Q4 | wltw |
Defined Benefit Plan Fair Value Of Plan Assets Liabilities Reconciliation
DefinedBenefitPlanFairValueOfPlanAssetsLiabilitiesReconciliation
|
8292000000 | |
CY2019 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
150000000 | |
CY2018 | us-gaap |
Defined Contribution Plan Cost Recognized
DefinedContributionPlanCostRecognized
|
150000000 | |
CY2019Q4 | wltw |
Defined Benefit Plan Net Assets Held In Investments
DefinedBenefitPlanNetAssetsHeldInInvestments
|
9553000000 | |
CY2018Q4 | wltw |
Defined Benefit Plan Net Assets Held In Investments
DefinedBenefitPlanNetAssetsHeldInInvestments
|
8279000000 | |
CY2019Q4 | wltw |
Defined Benefit Plan Postretirement Health Assets
DefinedBenefitPlanPostretirementHealthAssets
|
0 | |
CY2018Q4 | wltw |
Defined Benefit Plan Postretirement Health Assets
DefinedBenefitPlanPostretirementHealthAssets
|
1000000 | |
CY2019Q4 | wltw |
Defined Benefit Plan Net Payable Receivable For Investments Purchased
DefinedBenefitPlanNetPayableReceivableForInvestmentsPurchased
|
-7000000 | |
CY2018Q4 | wltw |
Defined Benefit Plan Net Payable Receivable For Investments Purchased
DefinedBenefitPlanNetPayableReceivableForInvestmentsPurchased
|
-1000000 | |
CY2019Q4 | wltw |
Defined Benefit Plan Dividend And Interest Receivable
DefinedBenefitPlanDividendAndInterestReceivable
|
1000000 | |
CY2018Q4 | wltw |
Defined Benefit Plan Dividend And Interest Receivable
DefinedBenefitPlanDividendAndInterestReceivable
|
1000000 | |
CY2019Q4 | wltw |
Defined Benefit Plan Other Adjustments
DefinedBenefitPlanOtherAdjustments
|
0 | |
CY2019Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Next Twelve Months
DefinedBenefitPlanExpectedFutureBenefitPaymentsNextTwelveMonths
|
387000000 | |
CY2019Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Year Two
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearTwo
|
417000000 | |
CY2019Q1 | us-gaap |
Cumulative Effect On Retained Earnings Net Of Tax1
CumulativeEffectOnRetainedEarningsNetOfTax1
|
0 | |
CY2019Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Year Three
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearThree
|
411000000 | |
CY2019Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Year Four
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFour
|
428000000 | |
CY2019Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Year Five
DefinedBenefitPlanExpectedFutureBenefitPaymentsYearFive
|
447000000 | |
CY2019Q4 | us-gaap |
Defined Benefit Plan Expected Future Benefit Payments Five Fiscal Years Thereafter
DefinedBenefitPlanExpectedFutureBenefitPaymentsFiveFiscalYearsThereafter
|
2374000000 | |
CY2019 | wltw |
Payments For Deferred Contingent Consideration Financing Activities
PaymentsForDeferredContingentConsiderationFinancingActivities
|
57000000 | |
CY2019 | us-gaap |
Short Term Lease Cost
ShortTermLeaseCost
|
2000000 | |
CY2019Q1 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
1000000000.0 | |
CY2019Q4 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
968000000 | |
CY2019Q4 | us-gaap |
Finance Lease Right Of Use Asset
FinanceLeaseRightOfUseAsset
|
10000000 | |
CY2019Q4 | wltw |
Lease Right Of Use Asset
LeaseRightOfUseAsset
|
978000000 | |
CY2019Q4 | us-gaap |
Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
|
164000000 | |
CY2019Q4 | us-gaap |
Finance Lease Liability Current
FinanceLeaseLiabilityCurrent
|
3000000 | |
CY2019Q4 | wltw |
Lease Liability Current
LeaseLiabilityCurrent
|
167000000 | |
CY2019Q4 | us-gaap |
Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
|
964000000 | |
CY2019Q4 | us-gaap |
Finance Lease Liability Noncurrent
FinanceLeaseLiabilityNoncurrent
|
22000000 | |
CY2019Q4 | wltw |
Lease Liability Noncurrent
LeaseLiabilityNoncurrent
|
986000000 | |
CY2019 | us-gaap |
Finance Lease Right Of Use Asset Amortization
FinanceLeaseRightOfUseAssetAmortization
|
2000000 | |
CY2019 | us-gaap |
Finance Lease Interest Expense
FinanceLeaseInterestExpense
|
3000000 | |
CY2019 | us-gaap |
Operating Lease Cost
OperatingLeaseCost
|
191000000 | |
CY2019 | us-gaap |
Operating Lease Payments
OperatingLeasePayments
|
205000000 | |
CY2019 | us-gaap |
Finance Lease Interest Payment On Liability
FinanceLeaseInterestPaymentOnLiability
|
3000000 | |
CY2019 | us-gaap |
Finance Lease Principal Payments
FinanceLeasePrincipalPayments
|
2000000 | |
CY2019 | wltw |
Lease Payment
LeasePayment
|
210000000 | |
CY2019 | us-gaap |
Right Of Use Asset Obtained In Exchange For Operating Lease Liability
RightOfUseAssetObtainedInExchangeForOperatingLeaseLiability
|
124000000 | |
CY2019 | wltw |
Amount Payable From Option
AmountPayableFromOption
|
38000000 | |
CY2019Q4 | us-gaap |
Finance Lease Liability Payments Due
FinanceLeaseLiabilityPaymentsDue
|
37000000 | |
CY2018Q4 | wltw |
Operating And Capital Lease Liability Future Minimum Payments Due Year Three
OperatingAndCapitalLeaseLiabilityFutureMinimumPaymentsDueYearThree
|
165000000 | |
CY2019Q4 | wltw |
Lease Liability Payments Due
LeaseLiabilityPaymentsDue
|
1357000000 | |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Undiscounted Excess Amount
LesseeOperatingLeaseLiabilityUndiscountedExcessAmount
|
192000000 | |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Two
LesseeOperatingLeaseLiabilityPaymentsDueYearTwo
|
172000000 | |
CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Four Years
OperatingLeasesFutureMinimumPaymentsDueInFourYears
|
142000000 | |
CY2018Q4 | us-gaap |
Capital Leases Future Minimum Payments Due In Four Years
CapitalLeasesFutureMinimumPaymentsDueInFourYears
|
6000000 | |
CY2019Q4 | us-gaap |
Finance Lease Liability Payments Due Year Two
FinanceLeaseLiabilityPaymentsDueYearTwo
|
6000000 | |
CY2019Q4 | wltw |
Lease Liability Payments Due Year Two
LeaseLiabilityPaymentsDueYearTwo
|
178000000 | |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Three
LesseeOperatingLeaseLiabilityPaymentsDueYearThree
|
156000000 | |
CY2019Q4 | us-gaap |
Finance Lease Liability Payments Due Year Three
FinanceLeaseLiabilityPaymentsDueYearThree
|
6000000 | |
CY2019Q4 | wltw |
Lease Liability Payments Due Year Three
LeaseLiabilityPaymentsDueYearThree
|
162000000 | |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Four
LesseeOperatingLeaseLiabilityPaymentsDueYearFour
|
146000000 | |
CY2019Q4 | us-gaap |
Finance Lease Liability Payments Due Year Four
FinanceLeaseLiabilityPaymentsDueYearFour
|
6000000 | |
CY2019Q4 | wltw |
Lease Liability Payments Due Year Four
LeaseLiabilityPaymentsDueYearFour
|
152000000 | |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Year Five
LesseeOperatingLeaseLiabilityPaymentsDueYearFive
|
130000000 | |
CY2019Q4 | us-gaap |
Finance Lease Liability Payments Due Year Five
FinanceLeaseLiabilityPaymentsDueYearFive
|
6000000 | |
CY2018Q4 | wltw |
Operating And Capital Lease Liability Future Minimum Payments Due Year Two
OperatingAndCapitalLeaseLiabilityFutureMinimumPaymentsDueYearTwo
|
186000000 | |
CY2019Q4 | wltw |
Lease Liability Payments Due Year Five
LeaseLiabilityPaymentsDueYearFive
|
136000000 | |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due After Year Five
LesseeOperatingLeaseLiabilityPaymentsDueAfterYearFive
|
524000000 | |
CY2019Q4 | us-gaap |
Finance Lease Liability Payments Due After Year Five
FinanceLeaseLiabilityPaymentsDueAfterYearFive
|
7000000 | |
CY2018Q4 | us-gaap |
Capital Leases Future Minimum Payments Interest Included In Payments
CapitalLeasesFutureMinimumPaymentsInterestIncludedInPayments
|
14000000 | |
CY2018Q4 | wltw |
Operating And Capital Lease Liability Future Minimum Payments Interest Included In Payments
OperatingAndCapitalLeaseLiabilityFutureMinimumPaymentsInterestIncludedInPayments
|
216000000 | |
CY2019Q4 | wltw |
Lease Liability Payments Due After Year Five
LeaseLiabilityPaymentsDueAfterYearFive
|
531000000 | |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due
LesseeOperatingLeaseLiabilityPaymentsDue
|
1320000000 | |
CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Three Years
OperatingLeasesFutureMinimumPaymentsDueInThreeYears
|
159000000 | |
CY2018Q4 | us-gaap |
Capital Leases Future Minimum Payments Due In Three Years
CapitalLeasesFutureMinimumPaymentsDueInThreeYears
|
6000000 | |
CY2019Q4 | us-gaap |
Operating Lease Weighted Average Discount Rate Percent
OperatingLeaseWeightedAverageDiscountRatePercent
|
0.036 | |
CY2019Q4 | us-gaap |
Finance Lease Weighted Average Discount Rate Percent
FinanceLeaseWeightedAverageDiscountRatePercent
|
0.129 | |
CY2019Q4 | us-gaap |
Lessee Operating Lease Liability Payments Due Next Twelve Months
LesseeOperatingLeaseLiabilityPaymentsDueNextTwelveMonths
|
192000000 | |
CY2019Q4 | us-gaap |
Finance Lease Liability Payments Due Next Twelve Months
FinanceLeaseLiabilityPaymentsDueNextTwelveMonths
|
6000000 | |
CY2019Q4 | wltw |
Lease Liability Payments Due Next Twelve Months
LeaseLiabilityPaymentsDueNextTwelveMonths
|
198000000 | |
CY2019Q4 | us-gaap |
Finance Lease Liability Undiscounted Excess Amount
FinanceLeaseLiabilityUndiscountedExcessAmount
|
12000000 | |
CY2019Q4 | wltw |
Lease Liability Undiscounted Excess Amount
LeaseLiabilityUndiscountedExcessAmount
|
204000000 | |
CY2019Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
1128000000 | |
CY2019Q4 | us-gaap |
Finance Lease Liability
FinanceLeaseLiability
|
25000000 | |
CY2019Q4 | wltw |
Lease Liability
LeaseLiability
|
1153000000 | |
CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due Current
OperatingLeasesFutureMinimumPaymentsDueCurrent
|
197000000 | |
CY2018Q4 | us-gaap |
Capital Leases Future Minimum Payments Due Current
CapitalLeasesFutureMinimumPaymentsDueCurrent
|
5000000 | |
CY2018Q4 | wltw |
Operating And Capital Lease Liability Future Minimum Payments Due Next Twelve Months
OperatingAndCapitalLeaseLiabilityFutureMinimumPaymentsDueNextTwelveMonths
|
202000000 | |
CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Two Years
OperatingLeasesFutureMinimumPaymentsDueInTwoYears
|
180000000 | |
CY2018Q4 | us-gaap |
Capital Leases Future Minimum Payments Due In Two Years
CapitalLeasesFutureMinimumPaymentsDueInTwoYears
|
6000000 | |
CY2018Q4 | wltw |
Operating And Capital Lease Liability Future Minimum Payments Due Year Four
OperatingAndCapitalLeaseLiabilityFutureMinimumPaymentsDueYearFour
|
148000000 | |
CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due In Five Years
OperatingLeasesFutureMinimumPaymentsDueInFiveYears
|
131000000 | |
CY2018Q4 | us-gaap |
Capital Leases Future Minimum Payments Due In Five Years
CapitalLeasesFutureMinimumPaymentsDueInFiveYears
|
6000000 | |
CY2018Q4 | wltw |
Operating And Capital Lease Liability Future Minimum Payments Due Year Five
OperatingAndCapitalLeaseLiabilityFutureMinimumPaymentsDueYearFive
|
137000000 | |
CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due Thereafter
OperatingLeasesFutureMinimumPaymentsDueThereafter
|
542000000 | |
CY2018Q4 | us-gaap |
Capital Leases Future Minimum Payments Due Thereafter
CapitalLeasesFutureMinimumPaymentsDueThereafter
|
14000000 | |
CY2018Q4 | wltw |
Operating And Capital Lease Liability Future Minimum Payments Due Thereafter
OperatingAndCapitalLeaseLiabilityFutureMinimumPaymentsDueThereafter
|
556000000 | |
CY2018Q4 | us-gaap |
Operating Leases Future Minimum Payments Due
OperatingLeasesFutureMinimumPaymentsDue
|
1351000000 | |
CY2018Q4 | us-gaap |
Capital Leases Future Minimum Payments Due
CapitalLeasesFutureMinimumPaymentsDue
|
43000000 | |
CY2018Q4 | wltw |
Operating And Capital Lease Liability Future Minimum Payments Due
OperatingAndCapitalLeaseLiabilityFutureMinimumPaymentsDue
|
1394000000 | |
CY2018Q4 | wltw |
Operating Leases Future Minimum Payments Interest Included In Payment
OperatingLeasesFutureMinimumPaymentsInterestIncludedInPayment
|
202000000 | |
CY2019Q4 | wltw |
Deferred Revenue And Accrued Liabilities Current
DeferredRevenueAndAccruedLiabilitiesCurrent
|
1784000000 | |
CY2018Q4 | us-gaap |
Operating Lease Liability
OperatingLeaseLiability
|
1149000000 | |
CY2019Q4 | wltw |
Business Combination Deferred And Contingent Consideration
BusinessCombinationDeferredAndContingentConsideration
|
38000000 | |
CY2019Q4 | us-gaap |
Contract With Customer Asset Net Noncurrent
ContractWithCustomerAssetNetNoncurrent
|
105000000 | |
CY2018Q4 | us-gaap |
Capital Lease Obligations
CapitalLeaseObligations
|
29000000 | |
CY2018Q4 | us-gaap |
Contract With Customer Asset Net Noncurrent
ContractWithCustomerAssetNetNoncurrent
|
3000000 | |
CY2019Q4 | us-gaap |
Other Assets Miscellaneous Noncurrent
OtherAssetsMiscellaneousNoncurrent
|
123000000 | |
CY2019Q4 | wltw |
Acquired Renewal Commissions Receivable Non Current
AcquiredRenewalCommissionsReceivableNonCurrent
|
125000000 | |
CY2019Q4 | wltw |
Prepaid Expense And Accrued Revenue Receivable Current
PrepaidExpenseAndAccruedRevenueReceivableCurrent
|
145000000 | |
CY2018Q4 | wltw |
Prepaid Expense And Accrued Revenue Receivable Current
PrepaidExpenseAndAccruedRevenueReceivableCurrent
|
136000000 | |
CY2019Q4 | wltw |
Deferred Contract Costs Current
DeferredContractCostsCurrent
|
101000000 | |
CY2018Q4 | wltw |
Deferred Contract Costs Current
DeferredContractCostsCurrent
|
102000000 | |
CY2019Q4 | wltw |
Derivatives And Investments Current
DerivativesAndInvestmentsCurrent
|
49000000 | |
CY2018Q4 | wltw |
Derivatives And Investments Current
DerivativesAndInvestmentsCurrent
|
25000000 | |
CY2019Q4 | wltw |
Deferred Compensation Plan Assets Current
DeferredCompensationPlanAssetsCurrent
|
18000000 | |
CY2018Q4 | wltw |
Deferred Compensation Plan Assets Current
DeferredCompensationPlanAssetsCurrent
|
18000000 | |
CY2019Q4 | wltw |
Prepaid Bonuses Current
PrepaidBonusesCurrent
|
11000000 | |
CY2018Q4 | wltw |
Prepaid Bonuses Current
PrepaidBonusesCurrent
|
5000000 | |
CY2019Q4 | us-gaap |
Income Taxes Receivable
IncomeTaxesReceivable
|
56000000 | |
CY2018Q4 | us-gaap |
Income Taxes Receivable
IncomeTaxesReceivable
|
61000000 | |
CY2019Q4 | us-gaap |
Restricted Cash Current
RestrictedCashCurrent
|
8000000 | |
CY2019Q4 | wltw |
Acquired Renewal Commission Receivable Current
AcquiredRenewalCommissionReceivableCurrent
|
25000000 | |
CY2019Q4 | us-gaap |
Other Assets Current
OtherAssetsCurrent
|
112000000 | |
CY2018Q4 | us-gaap |
Other Assets Current
OtherAssetsCurrent
|
57000000 | |
CY2019Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
525000000 | |
CY2018Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
404000000 | |
CY2019Q4 | wltw |
Prepaid Expense And Accrued Revenue Receivable Noncurrent
PrepaidExpenseAndAccruedRevenueReceivableNoncurrent
|
12000000 | |
CY2018Q4 | wltw |
Prepaid Expense And Accrued Revenue Receivable Noncurrent
PrepaidExpenseAndAccruedRevenueReceivableNoncurrent
|
14000000 | |
CY2019Q4 | wltw |
Deferred Contract Costs Noncurrent
DeferredContractCostsNoncurrent
|
76000000 | |
CY2018Q4 | wltw |
Deferred Contract Costs Noncurrent
DeferredContractCostsNoncurrent
|
46000000 | |
CY2019Q4 | us-gaap |
Deferred Compensation Plan Assets
DeferredCompensationPlanAssets
|
150000000 | |
CY2018Q4 | us-gaap |
Deferred Compensation Plan Assets
DeferredCompensationPlanAssets
|
125000000 | |
CY2019Q4 | us-gaap |
Deferred Tax Assets Liabilities Net Noncurrent
DeferredTaxAssetsLiabilitiesNetNoncurrent
|
72000000 | |
CY2018Q4 | us-gaap |
Deferred Tax Assets Liabilities Net Noncurrent
DeferredTaxAssetsLiabilitiesNetNoncurrent
|
59000000 | |
CY2019Q4 | us-gaap |
Accounts Receivable Net Noncurrent
AccountsReceivableNetNoncurrent
|
30000000 | |
CY2018Q4 | us-gaap |
Accounts Receivable Net Noncurrent
AccountsReceivableNetNoncurrent
|
20000000 | |
CY2018Q4 | us-gaap |
Other Assets Miscellaneous Noncurrent
OtherAssetsMiscellaneousNoncurrent
|
107000000 | |
CY2019Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
835000000 | |
CY2018Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
467000000 | |
CY2018Q4 | wltw |
Deferred Revenue And Accrued Liabilities Current
DeferredRevenueAndAccruedLiabilitiesCurrent
|
1647000000 | |
CY2019Q4 | us-gaap |
Other Investments
OtherInvestments
|
23000000 | |
CY2018Q4 | us-gaap |
Accrued Sales Commission Current
AccruedSalesCommissionCurrent
|
169000000 | |
CY2019Q4 | us-gaap |
Other Sundry Liabilities Current
OtherSundryLiabilitiesCurrent
|
75000000 | |
CY2018Q4 | us-gaap |
Other Investments
OtherInvestments
|
7000000 | |
CY2018Q4 | us-gaap |
Other Employee Related Liabilities Current
OtherEmployeeRelatedLiabilitiesCurrent
|
87000000 | |
CY2018Q4 | us-gaap |
Other Sundry Liabilities Current
OtherSundryLiabilitiesCurrent
|
122000000 | |
CY2019Q4 | us-gaap |
Other Employee Related Liabilities Current
OtherEmployeeRelatedLiabilitiesCurrent
|
64000000 | |
CY2019Q4 | wltw |
Business Combination Contingent Consideration Liability And Deferred Consideration Current
BusinessCombinationContingentConsiderationLiabilityAndDeferredConsiderationCurrent
|
12000000 | |
CY2018Q4 | wltw |
Business Combination Contingent Consideration Liability And Deferred Consideration Current
BusinessCombinationContingentConsiderationLiabilityAndDeferredConsiderationCurrent
|
61000000 | |
CY2019Q4 | wltw |
Payroll Related Liabilities Current
PayrollRelatedLiabilitiesCurrent
|
216000000 | |
CY2018Q4 | wltw |
Payroll Related Liabilities Current
PayrollRelatedLiabilitiesCurrent
|
210000000 | |
CY2019Q4 | us-gaap |
Derivative Liabilities Current
DerivativeLiabilitiesCurrent
|
3000000 | |
CY2019Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
802000000 | |
CY2019Q4 | us-gaap |
Insurance Settlements Receivable Noncurrent
InsuranceSettlementsReceivableNoncurrent
|
119000000 | |
CY2018Q4 | us-gaap |
Insurance Settlements Receivable Noncurrent
InsuranceSettlementsReceivableNoncurrent
|
86000000 | |
CY2019Q4 | us-gaap |
Accounts Payable Other Current
AccountsPayableOtherCurrent
|
856000000 | |
CY2018Q4 | us-gaap |
Accounts Payable Other Current
AccountsPayableOtherCurrent
|
691000000 | |
CY2019Q4 | wltw |
Accrued Discretionary And Incentive Compensation
AccruedDiscretionaryAndIncentiveCompensation
|
727000000 | |
CY2018Q4 | wltw |
Accrued Discretionary And Incentive Compensation
AccruedDiscretionaryAndIncentiveCompensation
|
758000000 | |
CY2019Q4 | us-gaap |
Other Deferred Compensation Arrangements Liability Current
OtherDeferredCompensationArrangementsLiabilityCurrent
|
137000000 | |
CY2018Q4 | us-gaap |
Other Deferred Compensation Arrangements Liability Current
OtherDeferredCompensationArrangementsLiabilityCurrent
|
111000000 | |
CY2018Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
864000000 | |
CY2018Q4 | us-gaap |
Derivative Liabilities Current
DerivativeLiabilitiesCurrent
|
13000000 | |
CY2019Q4 | us-gaap |
Accrued Sales Commission Current
AccruedSalesCommissionCurrent
|
179000000 | |
CY2019Q4 | us-gaap |
Dividends Payable Current
DividendsPayableCurrent
|
100000000 | |
CY2018Q4 | us-gaap |
Dividends Payable Current
DividendsPayableCurrent
|
87000000 | |
CY2019Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
138000000 | |
CY2018Q4 | us-gaap |
Taxes Payable Current
TaxesPayableCurrent
|
129000000 | |
CY2019Q4 | us-gaap |
Interest Payable Current
InterestPayableCurrent
|
65000000 | |
CY2018Q4 | us-gaap |
Interest Payable Current
InterestPayableCurrent
|
59000000 | |
CY2019Q4 | us-gaap |
Deferred Compensation Liability Current
DeferredCompensationLiabilityCurrent
|
14000000 | |
CY2018Q4 | us-gaap |
Deferred Compensation Liability Current
DeferredCompensationLiabilityCurrent
|
14000000 | |
CY2019Q4 | us-gaap |
Litigation Reserve Noncurrent
LitigationReserveNoncurrent
|
456000000 | |
CY2018Q4 | us-gaap |
Litigation Reserve Noncurrent
LitigationReserveNoncurrent
|
455000000 | |
CY2019Q4 | us-gaap |
Other Accrued Liabilities Noncurrent
OtherAccruedLiabilitiesNoncurrent
|
81000000 | |
CY2018Q4 | us-gaap |
Other Accrued Liabilities Noncurrent
OtherAccruedLiabilitiesNoncurrent
|
85000000 | |
CY2019Q4 | wltw |
Provision For Liabilities Non Current
ProvisionForLiabilitiesNonCurrent
|
537000000 | |
CY2018Q4 | wltw |
Provision For Liabilities Non Current
ProvisionForLiabilitiesNonCurrent
|
540000000 | |
CY2018Q4 | us-gaap |
Deferred Compensation Liability Classified Noncurrent
DeferredCompensationLiabilityClassifiedNoncurrent
|
125000000 | |
CY2018Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
429000000 | |
CY2018Q4 | us-gaap |
Incentive From Lessor
IncentiveFromLessor
|
120000000 | |
CY2019Q4 | us-gaap |
Deferred Compensation Liability Classified Noncurrent
DeferredCompensationLiabilityClassifiedNoncurrent
|
150000000 | |
CY2019Q4 | wltw |
Business Combination Contingent Consideration Liability And Deferred Consideration Noncurrent
BusinessCombinationContingentConsiderationLiabilityAndDeferredConsiderationNoncurrent
|
26000000 | |
CY2018Q4 | wltw |
Business Combination Contingent Consideration Liability And Deferred Consideration Noncurrent
BusinessCombinationContingentConsiderationLiabilityAndDeferredConsiderationNoncurrent
|
22000000 | |
CY2019Q4 | wltw |
Unrecognized Tax Benefits Including Interest
UnrecognizedTaxBenefitsIncludingInterest
|
48000000 | |
CY2018Q4 | wltw |
Unrecognized Tax Benefits Including Interest
UnrecognizedTaxBenefitsIncludingInterest
|
46000000 | |
CY2019Q4 | us-gaap |
Finance Lease Liability Noncurrent
FinanceLeaseLiabilityNoncurrent
|
22000000 | |
CY2018Q4 | us-gaap |
Finance Lease Liability Noncurrent
FinanceLeaseLiabilityNoncurrent
|
26000000 | |
CY2019Q4 | us-gaap |
Other Sundry Liabilities Noncurrent
OtherSundryLiabilitiesNoncurrent
|
89000000 | |
CY2018Q4 | us-gaap |
Other Sundry Liabilities Noncurrent
OtherSundryLiabilitiesNoncurrent
|
90000000 | |
CY2019Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
335000000 | |
CY2019 | us-gaap |
Disposal Group Not Discontinued Operation Gain Loss On Disposal
DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
|
-2000000 | |
CY2018 | us-gaap |
Disposal Group Not Discontinued Operation Gain Loss On Disposal
DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
|
-9000000 | |
CY2017 | us-gaap |
Disposal Group Not Discontinued Operation Gain Loss On Disposal
DisposalGroupNotDiscontinuedOperationGainLossOnDisposal
|
13000000 | |
CY2019 | us-gaap |
Defined Benefit Plan Net Periodic Benefit Cost
DefinedBenefitPlanNetPeriodicBenefitCost
|
-234000000 | |
CY2018 | us-gaap |
Defined Benefit Plan Net Periodic Benefit Cost
DefinedBenefitPlanNetPeriodicBenefitCost
|
-280000000 | |
CY2017 | us-gaap |
Defined Benefit Plan Net Periodic Benefit Cost
DefinedBenefitPlanNetPeriodicBenefitCost
|
-222000000 | |
CY2019 | us-gaap |
Investment Income Interest
InvestmentIncomeInterest
|
21000000 | |
CY2018 | us-gaap |
Investment Income Interest
InvestmentIncomeInterest
|
3000000 | |
CY2017 | us-gaap |
Investment Income Interest
InvestmentIncomeInterest
|
3000000 | |
CY2017 | wltw |
Effect Of Exchange Rate Changes On Net Income
EffectOfExchangeRateChangesOnNetIncome
|
2000000 | |
CY2019 | us-gaap |
Foreign Currency Transaction Gain Loss Realized
ForeignCurrencyTransactionGainLossRealized
|
-26000000 | |
CY2018 | us-gaap |
Foreign Currency Transaction Gain Loss Realized
ForeignCurrencyTransactionGainLossRealized
|
-24000000 | |
CY2017 | us-gaap |
Foreign Currency Transaction Gain Loss Realized
ForeignCurrencyTransactionGainLossRealized
|
-72000000 | |
CY2019 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
227000000 | |
CY2018 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
250000000 | |
CY2017 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
164000000 | |
CY2019 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
-230000000 | |
CY2019 | us-gaap |
Other Comprehensive Income Loss Before Tax
OtherComprehensiveIncomeLossBeforeTax
|
-311000000 | |
CY2019 | us-gaap |
Other Comprehensive Income Loss Tax
OtherComprehensiveIncomeLossTax
|
-81000000 | |
CY2019 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
8.02 | |
CY2018 | us-gaap |
Other Comprehensive Income Loss Before Tax
OtherComprehensiveIncomeLossBeforeTax
|
-504000000 | |
CY2018 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
5.27 | |
CY2017 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
4.18 | |
CY2018 | us-gaap |
Other Comprehensive Income Loss Tax
OtherComprehensiveIncomeLossTax
|
-56000000 | |
CY2018 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
-448000000 | |
CY2017 | us-gaap |
Other Comprehensive Income Loss Before Tax
OtherComprehensiveIncomeLossBeforeTax
|
388000000 | |
CY2017 | us-gaap |
Other Comprehensive Income Loss Tax
OtherComprehensiveIncomeLossTax
|
4000000 | |
CY2017 | us-gaap |
Other Comprehensive Income Loss Net Of Tax
OtherComprehensiveIncomeLossNetOfTax
|
384000000 | |
CY2017 | us-gaap |
Reclassification From Aoci Current Period Tax
ReclassificationFromAociCurrentPeriodTax
|
18000000 | |
CY2018 | us-gaap |
Reclassification From Aoci Current Period Tax
ReclassificationFromAociCurrentPeriodTax
|
17000000 | |
CY2019 | us-gaap |
Reclassification From Aoci Current Period Tax
ReclassificationFromAociCurrentPeriodTax
|
9000000 | |
CY2019 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
74000000 | |
CY2018 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
50000000 | |
CY2017 | us-gaap |
Allocated Share Based Compensation Expense
AllocatedShareBasedCompensationExpense
|
67000000 | |
CY2019 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
|
11000000 | |
CY2018 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
|
10000000 | |
CY2017 | us-gaap |
Employee Service Share Based Compensation Tax Benefit From Compensation Expense
EmployeeServiceShareBasedCompensationTaxBenefitFromCompensationExpense
|
22000000 | |
CY2019 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
45000000 | |
CY2018 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
45000000 | |
CY2017 | us-gaap |
Proceeds From Stock Options Exercised
ProceedsFromStockOptionsExercised
|
61000000 | |
CY2019 | wltw |
Employee Services Share Based Compensation Tax Benefit Realized From Vesting Of Rs Us
EmployeeServicesShareBasedCompensationTaxBenefitRealizedFromVestingOfRSUs
|
7000000 | |
CY2018 | wltw |
Employee Services Share Based Compensation Tax Benefit Realized From Vesting Of Rs Us
EmployeeServicesShareBasedCompensationTaxBenefitRealizedFromVestingOfRSUs
|
12000000 | |
CY2017 | wltw |
Employee Services Share Based Compensation Tax Benefit Realized From Vesting Of Rs Us
EmployeeServicesShareBasedCompensationTaxBenefitRealizedFromVestingOfRSUs
|
19000000 | |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
1044000000 | |
CY2018 | us-gaap |
Net Income Loss
NetIncomeLoss
|
695000000 | |
CY2017 | us-gaap |
Net Income Loss
NetIncomeLoss
|
568000000 | |
CY2019 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
130000000 | |
CY2018 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
131000000 | |
CY2017 | us-gaap |
Weighted Average Number Of Shares Outstanding Basic
WeightedAverageNumberOfSharesOutstandingBasic
|
135000000 | |
CY2019 | us-gaap |
Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
|
0 | |
CY2018 | us-gaap |
Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
|
1000000 | |
CY2017 | us-gaap |
Weighted Average Number Diluted Shares Outstanding Adjustment
WeightedAverageNumberDilutedSharesOutstandingAdjustment
|
1000000 | |
CY2019 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
130000000 | |
CY2018 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
132000000 | |
CY2017 | us-gaap |
Weighted Average Number Of Diluted Shares Outstanding
WeightedAverageNumberOfDilutedSharesOutstanding
|
136000000 | |
CY2019 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
8.05 | |
CY2018 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
5.29 | |
CY2017 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
4.21 | |
CY2019 | wltw |
Dilutive Securities Effect On Basic Earnings Per Share
DilutiveSecuritiesEffectOnBasicEarningsPerShare
|
-0.03 | |
CY2018 | wltw |
Dilutive Securities Effect On Basic Earnings Per Share
DilutiveSecuritiesEffectOnBasicEarningsPerShare
|
-0.02 | |
CY2017 | wltw |
Dilutive Securities Effect On Basic Earnings Per Share
DilutiveSecuritiesEffectOnBasicEarningsPerShare
|
-0.03 | |
CY2019Q2 | us-gaap |
Net Income Loss
NetIncomeLoss
|
138000000 | |
CY2019Q3 | us-gaap |
Net Income Loss
NetIncomeLoss
|
75000000 | |
CY2019Q4 | us-gaap |
Net Income Loss
NetIncomeLoss
|
544000000 | |
CY2019Q3 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.58 | |
CY2019Q1 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
2.21 | |
CY2019Q1 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
1953000000 | |
CY2019Q2 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
1872000000 | |
CY2019Q3 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
1882000000 | |
CY2019Q2 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
1.06 | |
CY2019Q3 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.58 | |
CY2019Q4 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
4.20 | |
CY2019Q4 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
2003000000 | |
CY2019Q1 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
359000000 | |
CY2019Q1 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
2.20 | |
CY2019Q2 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
1.06 | |
CY2019Q2 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
176000000 | |
CY2019Q3 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
107000000 | |
CY2019 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
299000000 | |
CY2018 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
178000000 | |
CY2017 | us-gaap |
Income Taxes Paid Net
IncomeTaxesPaidNet
|
203000000 | |
CY2019 | us-gaap |
Interest Paid Net
InterestPaidNet
|
210000000 | |
CY2018 | us-gaap |
Interest Paid Net
InterestPaidNet
|
176000000 | |
CY2017 | us-gaap |
Interest Paid Net
InterestPaidNet
|
169000000 | |
CY2019 | us-gaap |
Cash Acquired From Acquisition
CashAcquiredFromAcquisition
|
11000000 | |
CY2018 | us-gaap |
Cash Acquired From Acquisition
CashAcquiredFromAcquisition
|
13000000 | |
CY2017 | us-gaap |
Cash Acquired From Acquisition
CashAcquiredFromAcquisition
|
0 | |
CY2019 | wltw |
Non Cash Or Part Non Cash Acquisition Fair Value Of Deferred And Contingent Consideration
NonCashOrPartNonCashAcquisitionFairValueOfDeferredAndContingentConsideration
|
13000000 | |
CY2018 | wltw |
Non Cash Or Part Non Cash Acquisition Fair Value Of Deferred And Contingent Consideration
NonCashOrPartNonCashAcquisitionFairValueOfDeferredAndContingentConsideration
|
36000000 | |
CY2017 | wltw |
Non Cash Or Part Non Cash Acquisition Fair Value Of Deferred And Contingent Consideration
NonCashOrPartNonCashAcquisitionFairValueOfDeferredAndContingentConsideration
|
0 | |
CY2019Q1 | us-gaap |
Revenues
Revenues
|
2312000000 | |
CY2019Q2 | us-gaap |
Revenues
Revenues
|
2048000000 | |
CY2019Q3 | us-gaap |
Revenues
Revenues
|
1989000000 | |
CY2019Q4 | us-gaap |
Revenues
Revenues
|
2690000000 | |
CY2019Q4 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
687000000 | |
CY2019Q1 | us-gaap |
Profit Loss
ProfitLoss
|
293000000 | |
CY2019Q2 | us-gaap |
Profit Loss
ProfitLoss
|
149000000 | |
CY2019Q3 | us-gaap |
Profit Loss
ProfitLoss
|
80000000 | |
CY2019Q4 | us-gaap |
Profit Loss
ProfitLoss
|
551000000 | |
CY2019Q1 | us-gaap |
Net Income Loss
NetIncomeLoss
|
287000000 | |
CY2019Q4 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
4.18 | |
CY2018Q3 | us-gaap |
Revenues
Revenues
|
1859000000 | |
CY2018Q4 | us-gaap |
Revenues
Revenues
|
2372000000 | |
CY2018Q1 | us-gaap |
Revenues
Revenues
|
2292000000 | |
CY2018Q2 | us-gaap |
Revenues
Revenues
|
1990000000 | |
CY2018 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
7704000000 | |
CY2018 | wltw |
Business Combination Integration Related Costs Credits
BusinessCombinationIntegrationRelatedCostsCredits
|
202000000 | |
CY2018Q1 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
2033000000 | |
CY2018Q2 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
1927000000 | |
CY2018Q3 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
1842000000 | |
CY2018Q4 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
1902000000 | |
CY2018Q1 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
259000000 | |
CY2018Q2 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
63000000 | |
CY2018Q3 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
17000000 | |
CY2018Q4 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
470000000 | |
CY2018Q1 | us-gaap |
Profit Loss
ProfitLoss
|
221000000 | |
CY2018Q2 | us-gaap |
Profit Loss
ProfitLoss
|
65000000 | |
CY2018Q3 | us-gaap |
Profit Loss
ProfitLoss
|
46000000 | |
CY2018Q4 | us-gaap |
Profit Loss
ProfitLoss
|
383000000 | |
CY2018Q1 | us-gaap |
Net Income Loss
NetIncomeLoss
|
215000000 | |
CY2018Q2 | us-gaap |
Net Income Loss
NetIncomeLoss
|
58000000 | |
CY2018Q3 | us-gaap |
Net Income Loss
NetIncomeLoss
|
44000000 | |
CY2018Q4 | us-gaap |
Net Income Loss
NetIncomeLoss
|
378000000 | |
CY2018Q1 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
1.62 | |
CY2018Q2 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.44 | |
CY2018Q3 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
0.34 | |
CY2018Q4 | us-gaap |
Earnings Per Share Basic
EarningsPerShareBasic
|
2.91 | |
CY2018Q1 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
1.61 | |
CY2018Q2 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.44 | |
CY2018Q3 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
0.33 | |
CY2018Q4 | us-gaap |
Earnings Per Share Diluted
EarningsPerShareDiluted
|
2.89 | |
CY2019 | us-gaap |
Revenues
Revenues
|
9039000000 | |
CY2019 | us-gaap |
Labor And Related Expense
LaborAndRelatedExpense
|
5249000000 | |
CY2019 | us-gaap |
Other Cost And Expense Operating
OtherCostAndExpenseOperating
|
1719000000 | |
CY2019 | wltw |
Depreciation Not Including Integration Component
DepreciationNotIncludingIntegrationComponent
|
240000000 | |
CY2019 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
489000000 | |
CY2019 | wltw |
Business Combination Integration Related Costs Credits
BusinessCombinationIntegrationRelatedCostsCredits
|
13000000 | |
CY2019 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
7710000000 | |
CY2019 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
1329000000 | |
CY2019 | wltw |
Intercompany Income Expense
IntercompanyIncomeExpense
|
0 | |
CY2019 | us-gaap |
Interest Expense
InterestExpense
|
234000000 | |
CY2019 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
227000000 | |
CY2019 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
1322000000 | |
CY2019 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
249000000 | |
CY2019 | us-gaap |
Income Loss From Subsidiaries Net Of Tax
IncomeLossFromSubsidiariesNetOfTax
|
0 | |
CY2019 | us-gaap |
Profit Loss
ProfitLoss
|
1073000000 | |
CY2019 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
29000000 | |
CY2019 | us-gaap |
Net Income Loss
NetIncomeLoss
|
1044000000 | |
CY2019 | us-gaap |
Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
|
843000000 | |
CY2019 | us-gaap |
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
|
29000000 | |
CY2019 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
814000000 | |
CY2018 | us-gaap |
Revenues
Revenues
|
8513000000 | |
CY2018 | us-gaap |
Labor And Related Expense
LaborAndRelatedExpense
|
5123000000 | |
CY2018 | us-gaap |
Other Cost And Expense Operating
OtherCostAndExpenseOperating
|
1637000000 | |
CY2018 | wltw |
Depreciation Not Including Integration Component
DepreciationNotIncludingIntegrationComponent
|
208000000 | |
CY2018 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
534000000 | |
CY2018 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
809000000 | |
CY2018 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
250000000 | |
CY2018 | wltw |
Intercompany Income Expense
IntercompanyIncomeExpense
|
0 | |
CY2019Q4 | wltw |
Deferred Revenue And Accrued Liabilities Current
DeferredRevenueAndAccruedLiabilitiesCurrent
|
1784000000 | |
CY2019Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
316000000 | |
CY2018 | us-gaap |
Interest Expense
InterestExpense
|
208000000 | |
CY2019Q4 | us-gaap |
Operating Lease Liability Current
OperatingLeaseLiabilityCurrent
|
164000000 | |
CY2019Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
802000000 | |
CY2018 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
20000000 | |
CY2019Q4 | us-gaap |
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
|
1324000000 | |
CY2019Q4 | us-gaap |
Deferred Income Tax Liabilities Net
DeferredIncomeTaxLiabilitiesNet
|
526000000 | |
CY2018 | us-gaap |
Net Income Loss
NetIncomeLoss
|
695000000 | |
CY2018 | us-gaap |
Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
|
267000000 | |
CY2019Q4 | us-gaap |
Assets
Assets
|
35426000000 | |
CY2019Q4 | wltw |
Fiduciary Liabilities Current
FiduciaryLiabilitiesCurrent
|
13004000000 | |
CY2018 | us-gaap |
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
|
20000000 | |
CY2019Q4 | wltw |
Provision For Liabilities Non Current
ProvisionForLiabilitiesNonCurrent
|
537000000 | |
CY2018 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
851000000 | |
CY2018 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
136000000 | |
CY2018 | us-gaap |
Income Loss From Subsidiaries Net Of Tax
IncomeLossFromSubsidiariesNetOfTax
|
0 | |
CY2018 | us-gaap |
Profit Loss
ProfitLoss
|
715000000 | |
CY2018 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
247000000 | |
CY2017 | us-gaap |
Revenues
Revenues
|
8202000000 | |
CY2017 | us-gaap |
Labor And Related Expense
LaborAndRelatedExpense
|
4967000000 | |
CY2017 | us-gaap |
Other Cost And Expense Operating
OtherCostAndExpenseOperating
|
1534000000 | |
CY2017 | wltw |
Depreciation Not Including Integration Component
DepreciationNotIncludingIntegrationComponent
|
203000000 | |
CY2017 | us-gaap |
Amortization Of Intangible Assets
AmortizationOfIntangibleAssets
|
581000000 | |
CY2017 | us-gaap |
Restructuring Charges
RestructuringCharges
|
132000000 | |
CY2017 | wltw |
Business Combination Integration Related Costs Credits
BusinessCombinationIntegrationRelatedCostsCredits
|
269000000 | |
CY2017 | us-gaap |
Costs And Expenses
CostsAndExpenses
|
7686000000 | |
CY2017 | us-gaap |
Operating Income Loss
OperatingIncomeLoss
|
516000000 | |
CY2017 | wltw |
Intercompany Income Expense
IntercompanyIncomeExpense
|
0 | |
CY2017 | us-gaap |
Interest Expense
InterestExpense
|
188000000 | |
CY2017 | us-gaap |
Other Nonoperating Income Expense
OtherNonoperatingIncomeExpense
|
164000000 | |
CY2017 | us-gaap |
Income Loss From Continuing Operations Before Income Taxes Extraordinary Items Noncontrolling Interest
IncomeLossFromContinuingOperationsBeforeIncomeTaxesExtraordinaryItemsNoncontrollingInterest
|
492000000 | |
CY2017 | us-gaap |
Income Tax Expense Benefit
IncomeTaxExpenseBenefit
|
-100000000 | |
CY2017 | us-gaap |
Income Loss From Subsidiaries Net Of Tax
IncomeLossFromSubsidiariesNetOfTax
|
0 | |
CY2017 | us-gaap |
Profit Loss
ProfitLoss
|
592000000 | |
CY2017 | us-gaap |
Net Income Loss Attributable To Noncontrolling Interest
NetIncomeLossAttributableToNoncontrollingInterest
|
24000000 | |
CY2017 | us-gaap |
Net Income Loss
NetIncomeLoss
|
568000000 | |
CY2017 | us-gaap |
Comprehensive Income Net Of Tax Including Portion Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxIncludingPortionAttributableToNoncontrollingInterest
|
976000000 | |
CY2017 | us-gaap |
Comprehensive Income Net Of Tax Attributable To Noncontrolling Interest
ComprehensiveIncomeNetOfTaxAttributableToNoncontrollingInterest
|
37000000 | |
CY2017 | us-gaap |
Comprehensive Income Net Of Tax
ComprehensiveIncomeNetOfTax
|
939000000 | |
CY2019Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
887000000 | |
CY2019Q4 | us-gaap |
Funds Held For Clients
FundsHeldForClients
|
13004000000 | |
CY2019Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
2621000000 | |
CY2019Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
525000000 | |
CY2019Q4 | us-gaap |
Assets Current
AssetsCurrent
|
17037000000 | |
CY2019Q4 | us-gaap |
Due From Affiliates
DueFromAffiliates
|
0 | |
CY2019Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
1046000000 | |
CY2019Q4 | us-gaap |
Goodwill
Goodwill
|
11194000000 | |
CY2019Q4 | us-gaap |
Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
|
3478000000 | |
CY2019Q4 | us-gaap |
Operating Lease Right Of Use Asset
OperatingLeaseRightOfUseAsset
|
968000000 | |
CY2019Q4 | us-gaap |
Defined Benefit Plan Assets For Plan Benefits Noncurrent
DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
|
868000000 | |
CY2019Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
835000000 | |
CY2019Q4 | wltw |
Assets Noncurrent Before Investments In Affiliates Subsidiaries Associates And Joint Ventures
AssetsNoncurrentBeforeInvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
|
18389000000 | |
CY2019Q4 | us-gaap |
Investments In Affiliates Subsidiaries Associates And Joint Ventures
InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
|
0 | |
CY2019Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
16070000000 | |
CY2019Q4 | us-gaap |
Due To Affiliate Current And Noncurrent
DueToAffiliateCurrentAndNoncurrent
|
0 | |
CY2019Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
5301000000 | |
CY2019Q4 | us-gaap |
Operating Lease Liability Noncurrent
OperatingLeaseLiabilityNoncurrent
|
964000000 | |
CY2019Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
335000000 | |
CY2018Q4 | us-gaap |
Property Plant And Equipment Net
PropertyPlantAndEquipmentNet
|
942000000 | |
CY2019Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
35426000000 | |
CY2019Q4 | us-gaap |
Liabilities Noncurrent
LiabilitiesNoncurrent
|
8987000000 | |
CY2019Q4 | us-gaap |
Minority Interest
MinorityInterest
|
120000000 | |
CY2019Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
10369000000 | |
CY2018Q4 | us-gaap |
Goodwill
Goodwill
|
10465000000 | |
CY2018Q4 | us-gaap |
Intangible Assets Net Excluding Goodwill
IntangibleAssetsNetExcludingGoodwill
|
3318000000 | |
CY2018Q4 | us-gaap |
Defined Benefit Plan Assets For Plan Benefits Noncurrent
DefinedBenefitPlanAssetsForPlanBenefitsNoncurrent
|
773000000 | |
CY2018Q4 | us-gaap |
Other Assets Noncurrent
OtherAssetsNoncurrent
|
467000000 | |
CY2018Q4 | wltw |
Assets Noncurrent Before Investments In Affiliates Subsidiaries Associates And Joint Ventures
AssetsNoncurrentBeforeInvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
|
15965000000 | |
CY2018Q4 | us-gaap |
Investments In Affiliates Subsidiaries Associates And Joint Ventures
InvestmentsInAffiliatesSubsidiariesAssociatesAndJointVentures
|
0 | |
CY2019Q4 | us-gaap |
Liabilities
Liabilities
|
25057000000 | |
CY2019Q4 | us-gaap |
Redeemable Noncontrolling Interest Equity Carrying Amount
RedeemableNoncontrollingInterestEquityCarryingAmount
|
0 | |
CY2019Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
10249000000 | |
CY2018Q4 | us-gaap |
Assets
Assets
|
32385000000 | |
CY2018Q4 | wltw |
Fiduciary Liabilities Current
FiduciaryLiabilitiesCurrent
|
12604000000 | |
CY2018Q4 | wltw |
Deferred Revenue And Accrued Liabilities Current
DeferredRevenueAndAccruedLiabilitiesCurrent
|
1647000000 | |
CY2018Q4 | us-gaap |
Long Term Debt Current
LongTermDebtCurrent
|
186000000 | |
CY2018Q4 | us-gaap |
Cash And Cash Equivalents At Carrying Value
CashAndCashEquivalentsAtCarryingValue
|
1033000000 | |
CY2018Q4 | us-gaap |
Funds Held For Clients
FundsHeldForClients
|
12604000000 | |
CY2018Q4 | us-gaap |
Accounts Receivable Net Current
AccountsReceivableNetCurrent
|
2379000000 | |
CY2018Q4 | us-gaap |
Prepaid Expense And Other Assets Current
PrepaidExpenseAndOtherAssetsCurrent
|
404000000 | |
CY2018Q4 | us-gaap |
Assets Current
AssetsCurrent
|
16420000000 | |
CY2018Q4 | us-gaap |
Due From Affiliates
DueFromAffiliates
|
0 | |
CY2018Q4 | us-gaap |
Other Liabilities Current
OtherLiabilitiesCurrent
|
864000000 | |
CY2018Q4 | us-gaap |
Liabilities Current
LiabilitiesCurrent
|
15301000000 | |
CY2018Q4 | us-gaap |
Due To Affiliate Current And Noncurrent
DueToAffiliateCurrentAndNoncurrent
|
0 | |
CY2018Q4 | us-gaap |
Long Term Debt Noncurrent
LongTermDebtNoncurrent
|
4389000000 | |
CY2018Q4 | us-gaap |
Pension And Other Postretirement Defined Benefit Plans Liabilities Noncurrent
PensionAndOtherPostretirementDefinedBenefitPlansLiabilitiesNoncurrent
|
1170000000 | |
CY2018Q4 | us-gaap |
Deferred Income Tax Liabilities Net
DeferredIncomeTaxLiabilitiesNet
|
559000000 | |
CY2018Q4 | wltw |
Provision For Liabilities Non Current
ProvisionForLiabilitiesNonCurrent
|
540000000 | |
CY2018Q4 | us-gaap |
Other Liabilities Noncurrent
OtherLiabilitiesNoncurrent
|
429000000 | |
CY2018Q4 | us-gaap |
Liabilities Noncurrent
LiabilitiesNoncurrent
|
7087000000 | |
CY2018Q4 | us-gaap |
Liabilities
Liabilities
|
22388000000 | |
CY2018Q4 | us-gaap |
Redeemable Noncontrolling Interest Equity Carrying Amount
RedeemableNoncontrollingInterestEquityCarryingAmount
|
26000000 | |
CY2018Q4 | us-gaap |
Stockholders Equity
StockholdersEquity
|
9852000000 | |
CY2018Q4 | us-gaap |
Minority Interest
MinorityInterest
|
119000000 | |
CY2018Q4 | us-gaap |
Stockholders Equity Including Portion Attributable To Noncontrolling Interest
StockholdersEquityIncludingPortionAttributableToNoncontrollingInterest
|
9971000000 | |
CY2018Q4 | us-gaap |
Liabilities And Stockholders Equity
LiabilitiesAndStockholdersEquity
|
32385000000 | |
CY2019 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
1081000000 | |
CY2019 | wltw |
Payments To Acquire Fixed Assets And Software For Internal Use
PaymentsToAcquireFixedAssetsAndSoftwareForInternalUse
|
246000000 | |
CY2019 | us-gaap |
Payments To Develop Software
PaymentsToDevelopSoftware
|
59000000 | |
CY2019 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
1329000000 | |
CY2019 | us-gaap |
Proceeds From Divestiture Of Businesses Net Of Cash Divested
ProceedsFromDivestitureOfBusinessesNetOfCashDivested
|
17000000 | |
CY2019 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
-3000000 | |
CY2019 | wltw |
Proceeds From Repayments Of Intercompany Investing Activities
ProceedsFromRepaymentsOfIntercompanyInvestingActivities
|
0 | |
CY2019 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-1614000000 | |
CY2019 | us-gaap |
Proceeds From Repayments Of Lines Of Credit
ProceedsFromRepaymentsOfLinesOfCredit
|
-131000000 | |
CY2019 | us-gaap |
Proceeds From Issuance Of Senior Long Term Debt
ProceedsFromIssuanceOfSeniorLongTermDebt
|
997000000 | |
CY2019 | us-gaap |
Proceeds From Issuance Of Other Long Term Debt
ProceedsFromIssuanceOfOtherLongTermDebt
|
1100000000 | |
CY2019 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
13000000 | |
CY2019 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
995000000 | |
CY2019 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
150000000 | |
CY2019 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
45000000 | |
CY2019 | wltw |
Payments For Deferred Contingent Consideration Financing Activities
PaymentsForDeferredContingentConsiderationFinancingActivities
|
57000000 | |
CY2019 | us-gaap |
Payments Related To Tax Withholding For Share Based Compensation
PaymentsRelatedToTaxWithholdingForShareBasedCompensation
|
15000000 | |
CY2019 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
329000000 | |
CY2019 | us-gaap |
Proceeds From Payments To Minority Shareholders
ProceedsFromPaymentsToMinorityShareholders
|
-55000000 | |
CY2019 | wltw |
Repayments Of Intercompany Financing Activities
RepaymentsOfIntercompanyFinancingActivities
|
0 | |
CY2019 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
397000000 | |
CY2019 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
|
-136000000 | |
CY2018 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
-13000000 | |
CY2018 | wltw |
Proceeds From Repayments Of Intercompany Investing Activities
ProceedsFromRepaymentsOfIntercompanyInvestingActivities
|
0 | |
CY2019 | us-gaap |
Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
-2000000 | |
CY2018Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
1033000000 | |
CY2018 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-341000000 | |
CY2018 | us-gaap |
Proceeds From Repayments Of Lines Of Credit
ProceedsFromRepaymentsOfLinesOfCredit
|
-754000000 | |
CY2018 | us-gaap |
Proceeds From Issuance Of Senior Long Term Debt
ProceedsFromIssuanceOfSeniorLongTermDebt
|
998000000 | |
CY2018 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
8000000 | |
CY2018 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
170000000 | |
CY2018 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
602000000 | |
CY2018 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
45000000 | |
CY2018 | wltw |
Payments For Deferred Contingent Consideration Financing Activities
PaymentsForDeferredContingentConsiderationFinancingActivities
|
50000000 | |
CY2018 | us-gaap |
Payments Related To Tax Withholding For Share Based Compensation
PaymentsRelatedToTaxWithholdingForShareBasedCompensation
|
30000000 | |
CY2018 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
306000000 | |
CY2018 | us-gaap |
Proceeds From Payments To Minority Shareholders
ProceedsFromPaymentsToMinorityShareholders
|
-26000000 | |
CY2018 | wltw |
Repayments Of Intercompany Financing Activities
RepaymentsOfIntercompanyFinancingActivities
|
0 | |
CY2019Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
895000000 | |
CY2018Q4 | us-gaap |
Restricted Cash Current
RestrictedCashCurrent
|
0 | |
CY2018 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
1288000000 | |
CY2018 | wltw |
Payments To Acquire Fixed Assets And Software For Internal Use
PaymentsToAcquireFixedAssetsAndSoftwareForInternalUse
|
268000000 | |
CY2018 | us-gaap |
Payments To Develop Software
PaymentsToDevelopSoftware
|
54000000 | |
CY2018 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
36000000 | |
CY2018 | us-gaap |
Proceeds From Divestiture Of Businesses Net Of Cash Divested
ProceedsFromDivestitureOfBusinessesNetOfCashDivested
|
4000000 | |
CY2018 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
-903000000 | |
CY2018 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
|
44000000 | |
CY2018 | us-gaap |
Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
-41000000 | |
CY2017Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
1030000000 | |
CY2018Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
1033000000 | |
CY2017 | us-gaap |
Net Cash Provided By Used In Operating Activities
NetCashProvidedByUsedInOperatingActivities
|
862000000 | |
CY2017 | wltw |
Payments To Acquire Fixed Assets And Software For Internal Use
PaymentsToAcquireFixedAssetsAndSoftwareForInternalUse
|
300000000 | |
CY2017 | us-gaap |
Payments To Develop Software
PaymentsToDevelopSoftware
|
75000000 | |
CY2017 | us-gaap |
Payments To Acquire Businesses Net Of Cash Acquired
PaymentsToAcquireBusinessesNetOfCashAcquired
|
13000000 | |
CY2017 | us-gaap |
Proceeds From Divestiture Of Businesses Net Of Cash Divested
ProceedsFromDivestitureOfBusinessesNetOfCashDivested
|
57000000 | |
CY2017 | us-gaap |
Payments For Proceeds From Other Investing Activities
PaymentsForProceedsFromOtherInvestingActivities
|
4000000 | |
CY2017 | wltw |
Proceeds From Repayments Of Intercompany Investing Activities
ProceedsFromRepaymentsOfIntercompanyInvestingActivities
|
0 | |
CY2017 | wltw |
Proceeds From Repayments Of Investment In Intercompany Investing Activities
ProceedsFromRepaymentsOfInvestmentInIntercompanyInvestingActivities
|
0 | |
CY2017 | us-gaap |
Net Cash Provided By Used In Investing Activities
NetCashProvidedByUsedInInvestingActivities
|
-335000000 | |
CY2017 | us-gaap |
Proceeds From Repayments Of Lines Of Credit
ProceedsFromRepaymentsOfLinesOfCredit
|
642000000 | |
CY2017 | us-gaap |
Proceeds From Issuance Of Senior Long Term Debt
ProceedsFromIssuanceOfSeniorLongTermDebt
|
649000000 | |
CY2017 | us-gaap |
Proceeds From Issuance Of Other Long Term Debt
ProceedsFromIssuanceOfOtherLongTermDebt
|
32000000 | |
CY2017 | us-gaap |
Payments Of Debt Issuance Costs
PaymentsOfDebtIssuanceCosts
|
9000000 | |
CY2017 | us-gaap |
Repayments Of Long Term Debt
RepaymentsOfLongTermDebt
|
734000000 | |
CY2017 | us-gaap |
Payments For Repurchase Of Common Stock
PaymentsForRepurchaseOfCommonStock
|
532000000 | |
CY2017 | us-gaap |
Proceeds From Issuance Of Common Stock
ProceedsFromIssuanceOfCommonStock
|
61000000 | |
CY2017 | us-gaap |
Payments For Repurchase Of Equity
PaymentsForRepurchaseOfEquity
|
177000000 | |
CY2017 | wltw |
Payments For Deferred Contingent Consideration Financing Activities
PaymentsForDeferredContingentConsiderationFinancingActivities
|
65000000 | |
CY2017 | us-gaap |
Payments Related To Tax Withholding For Share Based Compensation
PaymentsRelatedToTaxWithholdingForShareBasedCompensation
|
18000000 | |
CY2017 | us-gaap |
Payments Of Dividends Common Stock
PaymentsOfDividendsCommonStock
|
277000000 | |
CY2017 | us-gaap |
Proceeds From Payments To Minority Shareholders
ProceedsFromPaymentsToMinorityShareholders
|
-51000000 | |
CY2017 | wltw |
Repayments Of Intercompany Financing Activities
RepaymentsOfIntercompanyFinancingActivities
|
0 | |
CY2017 | us-gaap |
Net Cash Provided By Used In Financing Activities
NetCashProvidedByUsedInFinancingActivities
|
-479000000 | |
CY2017 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents Period Increase Decrease Excluding Exchange Rate Effect
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalentsPeriodIncreaseDecreaseExcludingExchangeRateEffect
|
48000000 | |
CY2017 | us-gaap |
Effect Of Exchange Rate On Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
EffectOfExchangeRateOnCashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
112000000 | |
CY2016Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
870000000 | |
CY2017Q4 | us-gaap |
Cash Cash Equivalents Restricted Cash And Restricted Cash Equivalents
CashCashEquivalentsRestrictedCashAndRestrictedCashEquivalents
|
1030000000 |