Income Taxes - Earnings Before Income Taxes (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Domestic	$ 1,392.7	$ 1,335.7	$ 1,100.3
Foreign	129.3	104.3	107.5
Earnings before income taxes	$ 1,522.0	$ 1,440.0	$ 1,207.8