Income Taxes (Unaudited) (Details) - USD ($)	3 Months Ended
Mar. 31, 2018	Mar. 31, 2017
Schedule Of Income Taxes [Line Items]
U.S. operations	$ 3,000,000	$ (7,000,000)
International operations	(509,000,000)	(167,000,000)
Total	(506,000,000)	$ (174,000,000)
Tax Cuts and Jobs Act of 2017, Measurement Period Adjustment, Income Tax Expense (Benefit)	$ 0
Consolidated effective income tax rate (percent)	38.00%	40.00%

Schedule Of Income Taxes [Line Items]

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Amount of income tax expense (benefit) for measurement period adjustment from accounting for tax effect pursuant to Tax Cuts and Jobs Act of 2017

+ References

No definition available.

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- Definition

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

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of current and deferred federal income tax expense (benefit) attributable to income (loss) from continuing operations.

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-Publisher FASB
-Name Accounting Standards Codification
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Amount of current and deferred foreign income tax expense (benefit) attributable to income (loss) from continuing operations.

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

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