Benefit Plans - Amounts Recognized in Balance Sheet (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Current liabilities	$ (2.1)	$ (2.4)
Noncurrent liabilities	(28.2)	(40.5)
Pension benefits
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Noncurrent assets	0.3	16.7
Current liabilities	(1.5)	(1.7)
Noncurrent liabilities	(24.9)	(35.6)
Total liabilities	(26.1)	(20.6)
Other retirement benefits
Defined Benefit Plans and Other Postretirement Benefit Plans [Line Items]
Noncurrent assets	0.0	0.0
Current liabilities	(0.6)	(0.7)
Noncurrent liabilities	(3.3)	(4.9)
Total liabilities	$ (3.9)	$ (5.6)