Benefit Plans - Amounts Recognized in Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2024	Dec. 31, 2023
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Noncurrent liabilities	$ (28.2)	$ (29.6)
Pension benefits
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Noncurrent assets	2.9	2.7
Current liabilities	(1.4)	(1.4)
Noncurrent liabilities	(25.5)	(26.5)
Total liabilities	(24.0)	(25.2)
Other retirement benefits
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Noncurrent assets	0.0	0.0
Current liabilities	(0.5)	(0.6)
Noncurrent liabilities	(2.7)	(3.1)
Total liabilities	$ (3.2)	$ (3.7)