Financing Agreements - Interest Rates and Maturities (Details) - USD ($) $ in Millions	Mar. 31, 2024	Dec. 31, 2023	Nov. 30, 2023
Debt Instrument [Line Items]
Effective interest rate	5.23%
Finance lease obligations	$ 9.6	$ 10.3
Unamortized debt issuance costs and discounts	(13.4)	(14.3)
Total financing obligations	2,068.2	1,908.4
Less: Current financing obligations	54.0	54.0
Total long-term financing obligations	$ 2,014.2	1,854.4
Revolving Credit Facility
Debt Instrument [Line Items]
Average interest rate as of March 31, 2024	5.71%
Senior Notes | Senior Unsecured Notes 4.23% Due July 2028
Debt Instrument [Line Items]
Stated interest rate	4.23%
Long-term debt	$ 350.0	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	4.27%
Long-term debt	$ 53.0	54.2
Revolving Credit Facility
Debt Instrument [Line Items]
Revolving loan facility	$ 401.0	228.2
Term loan
Debt Instrument [Line Items]
Average interest rate as of March 31, 2024	6.56%
Revolving loan facility	$ 768.0	$ 780.0