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CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($)
$ in Millions
Total
Common Stock
Treasury Stock
Additional Paid-In Capital
Retained Earnings
Accumulated Other Comprehensive Income (Loss)
Beginning Balance at Dec. 31, 2019 $ 2,667.8 $ 292.8 $ (2,091.2) $ 295.5 $ 4,237.4 $ (66.7)
Beginning Balance (in shares) at Dec. 31, 2019   292,800,000 47,400,000      
Net Income 785.9 $ 0.0 $ 0.0 0.0 785.9 0.0
Other comprehensive (loss) income (10.9) 0.0 0.0 0.0 0.0 (10.9)
Cash dividends (237.3) 0.0 0.0 0.0 (237.3) 0.0
Stock purchases (300.0) 0.0 $ (270.0) (30.0) 0.0 0.0
Stock purchases (in shares)     (3,100,000)      
Stock based compensation expense and stock option plan transactions 114.9 0.0 $ 106.0 8.9 0.0 0.0
Stock based compensation expense and stock option plan transactions (in shares)     3,100,000      
Ending Balance at Dec. 31, 2020 3,020.4 $ 292.8 $ (2,255.2) 274.4 4,786.0 (77.6)
Ending Balance (in shares) at Dec. 31, 2020   292,800,000 47,400,000      
Net Income 827.5 $ 0.0 $ 0.0 0.0 827.5 0.0
Other comprehensive (loss) income 9.4 0.0 0.0 0.0 0.0 9.4
Cash dividends (247.5) 0.0 0.0 0.0 (247.5) 0.0
Stock purchases (500.0) 0.0 $ (510.0) 10.0 0.0 0.0
Stock purchases (in shares)     (5,700,000)      
Stock based compensation expense and stock option plan transactions 123.4 0.0 $ 97.5 25.9 0.0 0.0
Stock based compensation expense and stock option plan transactions (in shares)     2,800,000      
Ending Balance at Dec. 31, 2021 3,233.2 $ 292.8 $ (2,667.7) 310.3 5,366.0 (68.2)
Ending Balance (in shares) at Dec. 31, 2021   292,800,000 (50,300,000)      
Net Income 413.9 $ 0.0 $ 0.0 0.0 413.9 0.0
Other comprehensive (loss) income 38.9 0.0 0.0 0.0 0.0 38.9
Cash dividends (255.0) 0.0 0.0 0.0 (255.0) 0.0
Stock purchases 0.0 0.0 $ (20.0) 20.0 0.0 0.0
Stock purchases (in shares)     (200,000)      
Stock based compensation expense and stock option plan transactions 58.9 $ 0.9 $ 22.4 35.9 (0.3) 0.0
Stock based compensation expense and stock option plan transactions (in shares)   900,000 700,000      
Ending Balance at Dec. 31, 2022 $ 3,489.9 $ 293.7 $ (2,665.3) $ 366.2 $ 5,524.6 $ (29.3)
Ending Balance (in shares) at Dec. 31, 2022   293,700,000 49,800,000