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Financing Arrangements (Details) $ in Millions	Mar. 01, 2024 USD ($)	Dec. 14, 2022 USD ($)	Feb. 14, 2022	Feb. 29, 2024 USD ($)	May 31, 2023 USD ($)
Financing Arrangements
Debt issuance costs, net				$ (2.3)	$ (2.3)
Long-term debt				274.7
Senior Notes \| Subsequent Event
Financing Arrangements
Aggregate principal amount	$ 550.0
Interest rate (as a percent)	6.75%
Redemption Period One \| Senior Notes \| Subsequent Event
Financing Arrangements
Redemption price (as a percent)	100.00%
Redemption Period Two \| Senior Notes \| Subsequent Event
Financing Arrangements
Redemption price (as a percent)	106.75%
Percentage of principal amount redeemed	40.00%
2026 \| Subsequent Event
Financing Arrangements
Redemption price (as a percent)	103.375%
2027 \| Subsequent Event
Financing Arrangements
Redemption price (as a percent)	101.688%
2028 and thereafter \| Subsequent Event
Financing Arrangements
Redemption price (as a percent)	100.00%
Revolving credit facility with interest payable monthly
Financing Arrangements
Revolving Credit Facility with interest payable monthly				277.0	$ 272.0
Revolving Credit Facility
Financing Arrangements
Maximum borrowing capacity		$ 620.0
Revolving Credit Facility \| Subsequent Event
Financing Arrangements
Maximum borrowing capacity	$ 825.0
Adjusted total debt to EBITDA ratio	0.267
Proceeds from lines of credit	$ 186.2
Revolving Credit Facility \| Revolving credit facility with interest payable monthly
Financing Arrangements
Revolving Credit Facility with interest payable monthly				277.0
Line of credit facility, Additional borrowing capacity		300.0
Line of credit facility, Maximum additional borrowing capacity		$ 1,125.0
Remaining borrowing capacity				332.0
Revolving Credit Facility \| Revolving credit facility with interest payable monthly \| Letter of Credit
Financing Arrangements
Income tax refunds received				$ 11.0
Revolving Credit Facility \| Eurodollar rate \| 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 \| 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 \| Subsequent Event
Financing Arrangements
Increase in basis spread on variable rate	1.50%
Revolving Credit Facility \| Base rate \| 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 \| 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 \| Subsequent Event
Financing Arrangements
Increase in basis spread on variable rate	2.50%
Revolving Credit Facility \| SOFR \| Revolving credit facility with interest payable monthly
Financing Arrangements
Debt instrument basis spread on variable rate after amendment			0.10%