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
Earnings Per Share [Abstract]
Net Income (Loss) Attributable to Parent	$ 952.8	$ 351.1	$ 656.0
Weighted-average number of common shares outstanding, Basic	393.0	389.4	386.1
Restricted stock, stock options and other equity awards	5.4	3.8	5.1
Weighted-average number of common shares outstanding, Diluted	398.4	393.2	391.2
Basic	$ 2.42	$ 0.90	$ 1.70
Diluted	$ 2.39	$ 0.89	$ 1.68