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Income Taxes - Income Tax Reconciliation (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Income Tax Disclosure [Abstract] |  |  |  |
Income tax expense (benefit) at the U.S. federal tax rate of 35% |  | $ 72 | $ 8 | $ 169
Foreign income tax differential |  | 10 | 20 | (38)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount |  | 3 | 2 | (1)
U.S. permanent book/tax differences |  | 3 | 0 | 1
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Meals and Entertainment, Amount |  | 2 | 2 | 2
Effective Income Tax Rate Reconciliation, Executive Compensation |  | 9 | 4 | 1
Employee Benefits and Share-based Compensation |  | 2 | 3 | (3)
Impact of intangible asset transfer |  | 245 | 0 | 0
Effective Income Tax Rate Reconciliation, foreign derived intangible income deduction |  | (7) | (1) | 0
Effective Income Tax Rate Reconciliation, Branch Status Change |  | (17) | (9) | 0
Goodwill impairment |  | 0 | 30 | 0
Effective Income Tax Rate Reconciliation, Nondeductible Expense, Research and Development, Amount |  | (5) | (6) | (4)
Effective Income Tax Rate Reconciliation, Deduction, Amount |  | 0 | 0 | (9)
Effective Income Tax Rate Reconciliation, Change in Deferred Tax Assets Valuation Allowance, Amount | [1] | (16) | 16 | 0
US Tax Reform, Provisional Tax Expense |  | 0 | 37 | 130
Gains/losses on entity liquidations tax impact |  | (12) | 0 | 0
Effective Income Tax Rate Reconciliation, Change in Foreign Deferred Tax Assets Valuation Allowance, Amount |  | (74) | 2 | 0
Change in liability for unrecognized tax benefits | [1] | 4 | (23) | (2)
Effective Income Tax Rate Reconciliation, Other Reconciling Items, Amount |  | (1) | (11) | 0
Other, net |  | (1) | (1) | (4)
Total income tax expense (benefit) |  | (273) | $ 73 | $ 242
Net tax benefit associated with the transfer of certain intangible assets |  | $ 264 |  |
[1] | (1) Does not include the impact of items included in the U.S. Tax Reform category

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