Income Taxes (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Sep. 30, 2020	Sep. 30, 2019	Jun. 30, 2019	Sep. 30, 2020	Sep. 30, 2019
Income Tax Disclosure [Abstract]
Effective income tax expense (benefit) rate	(2.00%)	6.00%		1.00%	(27.00%)
Tax benefit from settlement			$ 126
Tax benefit from internal restructuring			$ 18
Effective income tax expense (benefit) rate, excluding discrete items					10.00%
Proceeds from income tax refunds	$ 89			$ 94	$ 89

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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The amount of cash received during the period as refunds for the overpayment of taxes.

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