XML 225 R144.htm IDEA: XBRL DOCUMENT v3.20.4
DEFERRED INCOME TAXES - Sources of Deferred Income Tax Assets and Liabilities (Details) - USD ($)
$ in Millions
Dec. 31, 2020
Dec. 31, 2019
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets $ 98 $ 235
Deferred tax liabilities (3,034) (3,091)
Deferred tax liability (asset) 2,936 2,856
Before offset amount    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 930 978
Deferred tax liabilities (2,936) (2,856)
Tax loss carry forwards    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 456 511
Alternative minimum tax (“AMT”) credits    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 13 28
Environmental rehabilitation    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 358 329
Post-retirement benefit obligations and other employee benefits    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 30 24
Other working capital    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 70 75
Other    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax assets 3 11
Property, plant and equipment    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liabilities (3,375) (3,263)
Inventory    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liabilities (463) (545)
Accrued interest payable    
Disclosure of temporary difference, unused tax losses and unused tax credits [line items]    
Deferred tax liabilities $ (28) $ (26)