Income Taxes - Income Before Provision of Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
U.S. domestic income	$ 3,816.2	$ 439.5	$ 1,141.8
Foreign income	211.3	140.5	91.6
Income before provision for income taxes	$ 4,027.5	$ 580.0	$ 1,233.4