Income Taxes - Deferred Tax Assets and Liabilities Recognized in Company's Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2023	Dec. 31, 2022
Income Tax Disclosure [Abstract]
Noncurrent deferred tax asset - Other noncurrent assets	$ 1.5	$ 2.0
Noncurrent deferred tax liabilities - Deferred income taxes	(291.9)	(264.2)
Net deferred tax liabilities	$ (290.4)	$ (262.2)