Income Taxes - Significant Components of the Provisions for Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal	$ 331.2	$ 457.7	$ 440.1
Foreign	86.5	92.0	71.1
State and local	46.8	84.4	60.4
Total current	464.5	634.1	571.6
Deferred:
Federal	(36.5)	(102.7)	(83.7)
Foreign	(40.4)	(19.0)	(32.3)
State and local	(3.4)	(23.6)	(15.1)
Total deferred	(80.3)	(145.3)	(131.1)
Total provisions for income taxes	$ 384.2	$ 488.8	$ 440.5