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TRADE RECEIVABLES AND OTHER - Currency Concentration of Total Trade Receivables (Details) - EUR (€)
€ in Millions
Dec. 31, 2021
Dec. 31, 2020
Trade receivables [line items]    
Trade receivables € 603 € 341
Euro    
Trade receivables [line items]    
Trade receivables 277 143
U.S. Dollars    
Trade receivables [line items]    
Trade receivables 305 181
Swiss Francs    
Trade receivables [line items]    
Trade receivables 4 6
Other currencies    
Trade receivables [line items]    
Trade receivables € 17 € 11