Financing Arrangements (Details) - USD ($) $ in Millions	Aug. 14, 2025	Mar. 01, 2024	Dec. 14, 2022	Feb. 28, 2026	May 31, 2025
Financing Arrangements
Debt premium, net				$ 2.5
Debt issuance costs, net				(9.2)	$ (9.0)
Long-term debt				888.3	968.0
Senior Notes
Financing Arrangements
Debt				700.0	550.0
Aggregate principal amount		$ 550.0
Interest rate (as a percent)		6.75%
Additional Senior Notes
Financing Arrangements
Debt premium, net	$ 3.0
Debt issuance costs, net	(2.5)
Aggregate principal amount	$ 150.0
Debt issuance premium percentage	102.00%
2026
Financing Arrangements
Debt Instrument, Redemption Price, Percentage		103.375%
2027
Financing Arrangements
Debt Instrument, Redemption Price, Percentage		101.688%
2028 and thereafter
Financing Arrangements
Debt Instrument, Redemption Price, Percentage		100.00%
Amended Revolving Credit Facility with interest payable monthly
Financing Arrangements
Debt				195.0	$ 427.0
Revolving Credit Facility
Financing Arrangements
Maximum borrowing capacity		$ 825.0	$ 620.0
Revolving Credit Facility | Minimum
Financing Arrangements
Adjusted total debt to EBITDA ratio		3.75
Revolving Credit Facility | Amended Revolving Credit Facility with interest payable monthly
Financing Arrangements
Debt				195.0
Line of credit facility, Additional borrowing capacity			300.0
Line of credit facility, Maximum additional borrowing capacity			$ 1,125.0
Remaining borrowing capacity				619.5
Revolving Credit Facility | Amended Revolving Credit Facility with interest payable monthly | Letter of Credit
Financing Arrangements
Income tax refunds received				$ 10.5
Revolving Credit Facility | Eurodollar rate | Amended Revolving Credit Facility with interest payable monthly | Minimum
Financing Arrangements
Debt instrument basis spread on variable rate after amendment			1.125%
Revolving Credit Facility | Eurodollar rate | Amended Revolving Credit Facility with interest payable monthly | Maximum
Financing Arrangements
Debt instrument basis spread on variable rate after amendment			2.50%
Revolving Credit Facility | Base rate
Financing Arrangements
Increase in basis spread on variable rate		1.50%
Revolving Credit Facility | Base rate | Amended Revolving Credit Facility with interest payable monthly | Minimum
Financing Arrangements
Debt instrument basis spread on variable rate after amendment			0.125%
Revolving Credit Facility | Base rate | Amended Revolving Credit Facility with interest payable monthly | Maximum
Financing Arrangements
Debt instrument basis spread on variable rate after amendment			1.50%
Revolving Credit Facility | SOFR
Financing Arrangements
Increase in basis spread on variable rate		2.50%
Revolving Credit Facility | SOFR | Amended Revolving Credit Facility with interest payable monthly
Financing Arrangements
Debt instrument basis spread on variable rate after amendment			0.10%