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Income Taxes - Summary of Temporary Differences in Deferred Income Tax Assets and Liabilities (Detail) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Net deferred tax asset (liability) $ 82 $ (93)
Deferred tax assets:    
Tax loss carryforwards and other tax credits 777 757
Accounts payable and accrued expenses 558 458
Intangible assets, net 49 57
Total deferred tax assets, gross 1,384 1,272
Presentation offset regarding same legal entity (644) (645)
Total deferred tax assets, net in the statement of financial position 740 627
Deferred tax liabilities:    
Property, machinery and equipment and right-of-use asset, net (1,273) (1,323)
Investments and other assets (29) (42)
Total deferred tax liabilities, gross (1,302) (1,365)
Presentation offset regarding same legal entity 644 645
Total deferred tax liabilities, net in the statement of financial position (658) (720)
Net deferred tax liabilities 82 (93)
Country of domicile [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Net deferred tax asset (liability) (77) (157)
Deferred tax assets:    
Total deferred tax assets, net in the statement of financial position 152 189
Deferred tax liabilities:    
Total deferred tax liabilities, net in the statement of financial position (229) (346)
Net deferred tax liabilities (77) (157)
Foreign countries [member]    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Net deferred tax asset (liability) 159 64
Deferred tax assets:    
Total deferred tax assets, net in the statement of financial position 588 438
Deferred tax liabilities:    
Total deferred tax liabilities, net in the statement of financial position (429) (374)
Net deferred tax liabilities $ 159 $ 64