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FINANCIAL ASSETS AND LIABILITIES - Foreign Exchange Risk (Details) - USD ($)
$ in Millions
3 Months Ended 12 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Not designated as hedging instruments - economic hedges | Currency swaps    
Derivatives, Fair Value [Line Items]    
Notional amount $ 945 $ 581
Not designated as hedging instruments - economic hedges | Currency swaps | Maximum    
Derivatives, Fair Value [Line Items]    
Term of contract 1 year  
Derivative instruments in cash flow hedges | Foreign exchange contracts    
Derivatives, Fair Value [Line Items]    
Net gains from derivatives   4
Derivative instruments in cash flow hedges | Designated as hedging instruments | Foreign exchange contracts    
Derivatives, Fair Value [Line Items]    
Notional amount   $ 213
Net gains from derivatives $ 3  
Deferred net loss/ profit on derivatives reclassified to net income 3  
Derivative instruments in cash flow hedges | Designated as hedging instruments | Foreign exchange forward contracts    
Derivatives, Fair Value [Line Items]    
Notional amount $ 216  
Maximum length of time hedged 1 year  
Weighted average remaining maturity 6 months 6 months