Basis of Presentation and Significant Accounting Policies - Fair Value Measurements (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2025	Dec. 31, 2024
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt and capital lease obligations	$ 1,734.6	$ 2,072.4
Investment impairment	49.4
Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair value of debt instrument	1,765.5	2,103.5
Carrying value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Debt and capital lease obligations	1,734.6	2,072.4
Fair value, measurements, recurring | Fair Value, Inputs, Level 1 | Supplemental Employee Retirement Plans, Defined Benefit
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-qualified deferred compensation assets	53.1	50.1
Non-qualified deferred compensation liabilities	(53.1)	(50.1)
Foreign currency contracts | Fair value, measurements, recurring | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	2.1
Derivative Liability		(0.9)
Interest rate swap | Fair value, measurements, recurring | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Asset	0.0	1.0
Foreign currency contracts | Fair value, measurements, recurring | Fair Value, Inputs, Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Non-qualified deferred compensation assets	$ 0.3
Derivative Liability		$ (1.6)