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EARNINGS PER SHARE - Reconciliation of the Earnings (Losses) and Number of Shares Used in Calculations of Basic and Diluted Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Computation of Basic Earnings Per Share      
Net income (loss) $ 1,099 $ (267) $ 1,273
Shares for basic earnings per share (in shares) 327.2 325.8 332.7
Basic earnings (loss) per share (in USD per share) $ 3.36 $ (0.82) $ 3.83
Computation of Diluted Earnings Per Share      
Net income (loss) $ 1,099 $ (267) $ 1,273
Shares for basic earnings per share (in shares) 327.2 325.8 332.7
Effect of dilutive securities      
Stock-based compensation (in shares) 2.1 0.0 2.8
Shares for diluted earnings per share (in shares) 329.3 325.8 335.5
Diluted earnings (loss) per share (in USD per share) $ 3.34 $ (0.82) $ 3.80
Antidilutive shares (in shares)   1.4