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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Name:	us-gaap_IncomeLossFromContinuingOperationsBeforeIncomeTaxesMinorityInterestAndIncomeLossFromEquityMethodInvestments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

Income Taxes - Additional Information (Detail) - USD ($) $ in Millions	1 Months Ended	3 Months Ended		6 Months Ended
	Nov. 30, 2020	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Income Tax [Line Items]
Expected impairment of income tax benefit	$ 139
Income tax expense (benefit)		$ 98	$ (104)	$ 159	$ (163)
Pre-tax income (loss)		$ 308	$ (51)	$ 451	$ (84)
Israel Tax Authority [Member]
Income Tax [Line Items]
Statutory tax rate in Israel				23.00%