CONSOLIDATED INTERIM STATEMENTS OF COMPREHENSIVE (LOSS) INCOME (Unaudited) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2020	Mar. 31, 2019
Statement Of Income And Comprehensive Income [Abstract]
Net (loss) income	$ (21)	$ 48
Other comprehensive (loss) income, net of tax
Foreign exchange translation adjustment	(66)	6
Total other comprehensive (loss) income, net of tax	(66)	6
Comprehensive (loss) income	$ (87)	$ 54

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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