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Income Taxes (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Income Taxes [Abstract]
U.S. Statutory Tax Rate	21.00%	21.00%	35.00%
Adjustment to deferred income tax expense (or deferred tax benefit)			$ 115
Provisional Transition Tax obligation			$ 62
Undistributed accumulated earnings of foreign subsidiaries	$ 1,300	$ 1,100
Accumulated earnings of foreign pass through subsidiaries	200	200
Accumulated earnings subject to additional foreign tax	$ 200	$ 200

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- Definition

Accumulated earnings attributable to our foreign subsidiaries that are considered pass-through entities for U.S. income tax purposes.

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Accumulated earnings of certain pass through subsidiaries where repatriation would result in additional foreign taxes in the form of dividend withholding tax imposed on the recipient of the distribution or dividend distribution tax imposed on the payor of the distribution.

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Amount of undistributed earnings of foreign subsidiaries.

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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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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 increase (decrease) in the income tax rates.

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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 repatriation of foreign earnings.

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