Income Taxes - Income Before Taxes and Tax Provision (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Domestic and foreign components of income before taxes:
Domestic	$ 0.7	$ (13.3)	$ (15.4)
Foreign	543.5	427.2	409.0
Income before income taxes, equity in income of unconsolidated investees, net of tax, and noncontrolling interests in consolidated subsidiaries	544.2	413.9	393.6
Current income tax expense (benefit):
Federal	2.3	(10.4)	1.0
State	2.4	2.5	1.2
Foreign	138.7	135.3	118.0
Total current income tax expense	143.4	127.4	120.2
Deferred income tax expense (benefit):
Federal	(18.1)	(3.1)	(7.8)
State	(4.8)	(1.7)	(2.5)
Foreign	(2.8)	(6.2)	3.1
Total deferred income tax benefit	(25.7)	(11.0)	(7.2)
Income tax provision	$ 117.7	$ 116.4	$ 113.0