Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Income Tax Disclosure [Abstract]
Effective income tax expense (benefit) rate	6.00%	29.00%	(27.00%)	31.00%
Tax benefit from settlement			$ 126
Tax benefit from internal restructuring			$ 18
Effective income tax expense (benefit) rate, excluding discrete items			10.00%
Tax expense from foreign currency revaluation				$ 162
Income tax receivable, current	$ 42		$ 42

Effective Income Tax Rate Reconciliation, Foreign Currency Revaluation, Amount

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Effective Income Tax Rate Reconciliation, Internal Restructuring, Amount

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Effective Income Tax Rate Reconciliation, Percent, Excluding Discrete Items

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Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of the difference between reported income tax expense (benefit) and expected income tax expense (benefit) computed by applying the domestic federal statutory income tax rates to pretax income (loss) from continuing operations attributable to foreign income tax settlement.

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Carrying amount due within one year of the balance sheet date (or one operating cycle, if longer) from tax authorities as of the balance sheet date representing refunds of overpayments or recoveries based on agreed-upon resolutions of disputes.

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