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Income taxes - Effective Consolidated Income Tax Rates (Detail) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Major components of tax expense (income) [abstract]
Earnings before income tax	$ 770	$ 954	$ (1,310)
Income tax	$ (209)	$ (137)	$ (36)
Effective consolidated income tax expense rate	27.10%	14.40%	(2.70%)

- Definition

The aggregate amount included in the determination of profit (loss) for the period in respect of current tax and deferred tax. [Refer: Current tax expense (income); Deferred tax expense (income)]

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