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EARNINGS PER SHARE (Tables)
6 Months Ended
Jun. 30, 2021
Earnings Per Share [Abstract]  
Schedule of Computation of Basic and Diluted Earnings Per Share
The table below presents the computation of basic and diluted earnings per share (in millions, except for per share information):
 Three Months Ended
June 30,
Six Months Ended
June 30,
 2021202020212020
Basic:    
Net income (loss)$489.5 $(121.9)$827.7 $188.7 
Weighted-average shares outstanding622.3 620.3 622.7 622.5 
Basic earnings (loss) per share$0.79 $(0.20)$1.33 $0.30 
Diluted:    
Net income (loss)$489.5 $(121.9)$827.7 $188.7 
Weighted-average shares outstanding622.3 620.3 622.7 622.5 
Dilutive effect of stock plans7.6 — 7.9 5.2 
Dilutive weighted-average shares outstanding629.9 620.3 630.6 627.7 
Diluted earnings (loss) per share$0.78 $(0.20)$1.31 $0.30