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Earnings Per Share (EPS) - Computation of Basic and Diluted EPS Attributable to Common Stock (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
 3 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Earnings Per Share [Abstract]    
Net income $ 146 $ 101
Weighted average shares of common stock outstanding (in shares) 65 66
Basic earnings per share (in dollars per share) $ 2.23 $ 1.53
Net income $ 146 $ 101
Dilutive effect of stock options and restricted stock units (in shares) 1 1
Weighted average shares of common stock outstanding - diluted (in shares) 66 67
Diluted earnings per share (in dollars per share) $ 2.21 $ 1.51
Common stock equivalents excluded from income per diluted share because of their anti-dilutive effect (in shares) 1 1