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INCOME TAXES - Deferred Income Tax Balances (Details) - USD ($)
$ in Millions
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred income tax assets, gross $ 747 $ 471  
Deferred income tax liabilities, gross (5,255) (3,817)  
Deferred income tax assets 112 75  
Deferred income tax liabilities (4,620) (3,421)  
Net deferred income tax liabilities (4,508) (3,346) $ (2,783)
Tax losses carried forward      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred income tax assets, gross 397 394  
Net deferred income tax liabilities 397 394 $ 361
Financial instruments and other      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred income tax assets, gross 350 77  
Property, plant and equipment and investment properties      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred income tax liabilities, gross (2,541) (1,702)  
Intangible assets      
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]      
Deferred income tax liabilities, gross $ (2,714) $ (2,115)