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FINANCING AND FINANCIAL INSTRUMENTS - Risk management policy - Foreign Exchange Rate Risk (Details) - Non deliverable forward and option contracts
$ in Millions, number in Billions
Dec. 11, 2019
USD ($)
Oct. 31, 2018
Disclosure of nature and extent of risks arising from financial instruments [line items]    
Nominal amount of the hedging instrument   5.9
Reclassification adjustments on cash flow hedges, before tax $ 360