Components of Income Before Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Domestic	$ 872.4	$ 447.1	$ 958.6
Foreign	95.0	76.2	73.1
Income before Income Taxes	$ 967.4	$ 523.3	$ 1,031.7