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SEGMENTED INFORMATION - Schedule of components of income tax expense (Details) - USD ($) $ in Millions	3 Months Ended		12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2021	Dec. 31, 2020
Disclosure of operating segments [abstract]
Current income tax expense	$ (1,114)	$ (756)	$ (1,114)	$ (756)
Deferred income tax expense			(1,210)	(81)
Income tax expense			$ (2,324)	$ (837)

- 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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