Income Taxes (Earnings Before Income Taxes) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Domestic	$ 1,100.3	$ 1,046.7	$ 977.6
Foreign	107.5	86.0	66.1
Earnings before income taxes	$ 1,207.8	$ 1,132.7	$ 1,043.7