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FINANCING AND FINANCIAL INSTRUMENTS - Risk management policy - Net investment hedges, Narrative (Details)
€ in Millions, $ in Millions
12 Months Ended
Dec. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2021
EUR (€)
Dec. 31, 2021
USD ($)
Disclosure of detailed information about hedging instruments [line items]        
Gains on hedges of net investments in foreign operations, net of tax $ 423 $ (597)    
Net investment hedge        
Disclosure of detailed information about hedging instruments [line items]        
Hedging instrument, liabilities   $ 6,327 € 3,709 $ 4,201
Hedged item, assets | €     € 8,261  
Gains on hedges of net investments in foreign operations, net of tax $ 423