Financing Agreements - Interest Rates and Maturities (Details) - USD ($) $ in Millions	Jun. 30, 2025	Dec. 31, 2024	Nov. 16, 2023	Jul. 31, 2018
Debt Instrument [Line Items]
Effective interest rate	5.24%
Finance lease obligations	$ 8.3	$ 8.1
Unamortized debt issuance costs and discounts	(14.6)	(14.8)
Total financing obligations	1,826.8	2,072.4
Less: Current financing obligations	434.5	434.3
Total long-term financing obligations	$ 1,392.3	1,638.1
Revolving Credit Facility
Debt Instrument [Line Items]
Average interest rate as of June 30, 2025	5.76%
Senior Notes | Senior Unsecured Notes 4.23% Due July 2028
Debt Instrument [Line Items]
Long-term debt	$ 0.0			$ 350.0
Senior Notes | Public Senior Note Six Point Nine Five Percent Due March Twenty Twenty-Nine
Debt Instrument [Line Items]
Stated interest rate	6.95%		6.95%
Long-term debt	$ 500.0	500.0
Notes payable and other
Debt Instrument [Line Items]
Stated interest rate	4.29%
Long-term debt	$ 45.6	47.1
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving loan facility	$ 400.0	282.0
Term loan
Debt Instrument [Line Items]
Average interest rate as of June 30, 2025	5.93%
Revolving loan facility	$ 487.5	500.0
Unsecured Debt | Incremental Term Loan Facility | Line of Credit
Debt Instrument [Line Items]
Average interest rate as of June 30, 2025	5.93%
Current line of credit	$ 400.0	$ 400.0