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FINANCIAL RISK MANAGEMENT - Expected Maturity of Financial Assets and Liablities (Details) - USD ($)
$ in Millions
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Cash and equivalents $ 5,280 $ 5,188 $ 3,314
Accounts receivable 623 558  
Liquidity risk      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Cash and equivalents 5,280 5,188  
Accounts receivable 623 558  
Derivative assets 53 40  
Trade and other payables 1,448 1,458  
Debt 5,176 5,181  
Other liabilities 473 382  
Liquidity risk | Less than 1 year      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Cash and equivalents 5,280 5,188  
Accounts receivable 623 558  
Derivative assets 0 0  
Trade and other payables 1,448 1,458  
Debt 15 20  
Other liabilities 30 31  
Liquidity risk | 1 to 3 years      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Cash and equivalents 0 0  
Accounts receivable 0 0  
Derivative assets 53 40  
Trade and other payables 0 0  
Debt 17 16  
Other liabilities 196 72  
Liquidity risk | 3 to 5 years      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Cash and equivalents 0 0  
Accounts receivable 0 0  
Derivative assets 0 0  
Trade and other payables 0 0  
Debt 67 20  
Other liabilities 92 36  
Liquidity risk | Over 5 years      
Disclosure of nature and extent of risks arising from financial instruments [line items]      
Cash and equivalents 0 0  
Accounts receivable 0 0  
Derivative assets 0 0  
Trade and other payables 0 0  
Debt 5,077 5,125  
Other liabilities $ 155 $ 243