Pension And Other Benefit Plans - Funded Status Of Pension Plans (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023
Change in pension benefit obligation:
Benefit obligation at beginning of year	$ (87.2)	$ (111.4)
Service cost	(5.0)	(4.7)	$ (4.5)
Interest cost	(2.4)	(3.3)	(3.8)
Employee contributions	(2.7)	(2.4)
Benefits and other expenses paid	2.7	2.3
Actuarial (loss) gain	(0.9)	0.5
Amendments, settlements and curtailments	2.0	23.3
Foreign exchange rate impact	(12.2)	8.5
Benefit obligation at end of year	(105.7)	(87.2)	(111.4)
Change in plan assets:
Fair value of plan assets at beginning of year	52.9	75.5
Actual return on plan assets	2.3	0.1
Net employer contributions	1.4	5.1
Employee contributions	2.7	2.4
Amendments and settlements	(2.0)	(23.2)
Benefits and other expenses paid	(2.7)	(2.3)
Foreign exchange rate impact	7.3	(4.7)
Fair value of plan assets at end of year	61.9	52.9	$ 75.5
Funded status	$ (43.8)	$ (34.3)