Pension And Other Benefit Plans - Funded Status Of Pension Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Change in pension benefit obligation:
Benefit obligation at beginning of year	$ (111.4)	$ (97.5)
Service cost	(4.7)	(4.5)	$ (5.5)
Interest cost	(3.3)	(3.8)	(1.8)
Employee contributions	(2.4)	(2.4)
Benefits and other expenses paid	2.3	2.4
Actuarial gain (loss)	0.5	(8.6)
Amendments, settlements and curtailments	23.3	10.6
Foreign exchange rate impact	8.5	(7.6)
Benefit obligation at end of year	(87.2)	(111.4)	(97.5)
Change in plan assets:
Fair value of plan assets at beginning of year	75.5	74.4
Actual return on plan assets	0.1	2.7
Employer contributions	5.1	5.2
Employee contributions	2.4	2.4
Amendments and settlements	(23.2)	(11.6)
Benefits and other expenses paid	(2.3)	(2.5)
Foreign exchange rate impact	(4.7)	4.9
Fair value of plan assets at end of year	52.9	75.5	$ 74.4
Funded status	$ (34.3)	$ (35.9)