Income Taxes (Schedule of Income Tax Provision and Effective Tax Rate) (Details) - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Income Tax Disclosure [Abstract]
Deferred tax benefit (provision)	$ 88	$ 47	$ 11	$ (56)
Effective tax rate	18.00%	22.00%	13.00%	24.00%
Current Income Tax Expense (Benefit)	$ 11	$ 0	$ 11	$ 0

Amount of deferred income tax expense (benefit) pertaining to income (loss) from continuing operations.

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Data Type:	xbrli:monetaryItemType
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