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EARNINGS PER SHARE - Schedule of Computation of Basic and Diluted Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Mar. 31, 2020
Mar. 31, 2019
Basic:    
Net income $ 310.6 $ 249.7
Weighted-average shares outstanding (in shares) 208.2 207.9
Basic earnings per share (in dollars per share) $ 1.49 $ 1.20
Diluted:    
Net income $ 310.6 $ 249.7
Weighted-average shares outstanding (in shares) 208.2 207.9
Dilutive effect of stock plans (in shares) 3.5 4.3
Dilutive weighted-average shares outstanding (in shares) 211.7 212.2
Diluted earnings per share (in dollars per share) $ 1.47 $ 1.18