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Income Taxes - Accumulated Other Comprehensive Income/(Loss) (Net of Tax) (Detail) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Before Income Taxes And Income Tax Expense Benefit [Line Items]
Income (Loss) before income taxes		$ 658	$ (4,406)	$ (1,265)
Statutory tax rate in Israel		23.00%	23.00%	23.00%
Theoretical provision for income taxes		$ 151	$ (1,013)	$ (291)
Increase (decrease) in the provision for income taxes due to:
The Parent Company and its Israeli subsidiaries - Tax benefits arising from reduced tax rates under benefit programs		(12)	(153)	(77)
Mainly nondeductible items and prior year tax		20	(30)	33
Non-Israeli subsidiaries, including impairments	[1]	117	1,369	(115)
Increase (decrease) in other uncertain tax positions—net		(65)	(341)	172
Effective consolidated income taxes		$ 211	$ (168)	$ (278)
[1] In 2020, income before income taxes includes goodwill impairment in non-Israeli subsidiaries that did not have a corresponding tax effect.

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