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Income Taxes (Components of Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Federal:
Current	$ (7)	$ 7	$ 0
Deferred	(4)	186	545
State:
Current	(1)	2	0
Deferred	0	5	1
Foreign:
Current	368	378	335
Deferred	(4)	130	109
Total	$ 352	$ 708	$ 990

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

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