Debt and Credit Arrangements - Notes Interest Accretion Schedule (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 22, 2022
Debt Instrument
Interest expense, debt	$ 48.2
Financing costs amortization	2.8	$ 0.7
Revolving Credit Facility
Debt Instrument
Interest expense, debt	8.1	3.3
Financing costs amortization	$ 0.7	0.5
Senior secured revolving credit facility due October 2026 | Revolving Credit Facility
Debt Instrument
Debt instrument stated interest rate (percent)	5.00%		3.40%
Interest expense, debt	$ 2.6	3.3
Financing costs amortization	0.6	0.5
Term Loan Due 2030 | Revolving Credit Facility
Debt Instrument
Interest expense, debt	5.5	0.0
Financing costs amortization	0.1	$ 0.0
Secured And Unsecured Debt
Debt Instrument
Notes, interest accretion of senior notes discount	0.7
Interest expense, debt	40.2
Financing costs amortization	$ 1.0
Secured Debt | Senior Secured Notes Due 2030
Debt Instrument
Debt instrument stated interest rate (percent)	7.50%			7.50%
Interest expense, debt	$ 27.4
Unsecured Debt | Senior Unsecured Notes Due 2031
Debt Instrument
Debt instrument stated interest rate (percent)	9.50%			9.50%
Interest expense, debt	$ 12.1