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Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
IncomeTaxesLineItems [Line Items]
Income tax expense (benefit)	$ (179)	$ (76)	$ (170)	$ (30)
Effective Income Tax Rate Reconciliation, Percent	21.00%	30.00%	18.00%
Pre-tax income (loss)	$ (850)	$ (250)	$ (934)	$ 1,004
Israel Tax Authority [Member]
IncomeTaxesLineItems [Line Items]
Statutory Israeli corporate tax rate			23.00%

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- Definition

Income Taxes [Line 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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Percentage of domestic federal statutory tax rate applicable to pretax income (loss).

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Amount of income (loss) from continuing operations before deduction of income tax expense (benefit) and income (loss) attributable to noncontrolling interest, and addition of income (loss) from equity method investments.

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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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