Income Taxes - Income Tax (Benefit) Expense (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Current income tax (expense) benefit:
U.S. federal	$ (12.2)	$ (6.3)	$ (12.6)
State	(2.4)	(0.4)	(2.2)
Non-U.S.	(20.2)	(14.8)	(16.6)
Total current income tax (expense) benefit	(34.8)	(21.5)	(31.4)
Deferred income tax (expense) benefit:
U.S. federal	(10.7)	(18.8)	(13.2)
State	(10.1)	2.7	(3.8)
Non-U.S.	(71.3)	5.0	63.9
Total deferred income tax (expense) benefit	(92.1)	(11.1)	46.9
Total income tax (expense) benefit	$ (126.9)	$ (32.6)	$ 15.5