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EQUITY - NARRATIVE (Details) - USD ($)
shares in Millions
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Jul. 28, 2021
Equity [Abstract]        
Stock repurchase program, authorized amount       $ 1,000,000,000
Treasury shares purchased $ 200,000,000 $ 140,000,000 $ 260,000,000  
Share repurchase program, remaining authorization 890,000,000      
Proceeds from exercised stock options $ 51,000,000 $ 11,000,000 $ 109,000,000  
Number of stock option exercised (in shares) 1.1 0.3 2.7