Financing Agreements - Additional Information (Detail) $ in Millions		1 Months Ended		3 Months Ended
	Jun. 30, 2021	Dec. 31, 2024 USD ($)	Nov. 30, 2023 USD ($)	Jun. 30, 2026	Mar. 31, 2026	Dec. 31, 2025	Sep. 30, 2025 USD ($)	Jun. 30, 2025	Dec. 13, 2024 USD ($)	Nov. 16, 2023 USD ($)	Jul. 31, 2018 USD ($)	Jul. 02, 2018 USD ($)
Debt Instrument [Line Items]
Open letters of credit							$ 60.8
Interest coverage ratio							2.50	2.50
Leverage ratio							4.50	4.00
Forecast
Debt Instrument [Line Items]
Interest coverage ratio				2.00	2.00	2.50
Leverage ratio				5.50	5.50	5.50
Term loan
Debt Instrument [Line Items]
Maximum borrowing capacity											$ 1,180.0
Revolving loan facility		$ 500.0					$ 481.3
Revolving Credit Facility
Debt Instrument [Line Items]
Maximum borrowing capacity									$ 1,400.0
Revolving loan facility		282.0					320.1
Repayments of principal in next twelve months							25.0
Minimum interest coverage ratio	3.00
Maximum leverage ratio	3.50
Senior Notes | Public Senior Note Six Point Nine Five Percent Due March Twenty Twenty-Nine
Debt Instrument [Line Items]
Long-term debt		500.0					500.0
Debt face amount										$ 500.0
Proceeds from issuance of Senior Long-Term debt			$ 492.0
Senior Notes | Senior Unsecured Notes 4.23% Due July 2028
Debt Instrument [Line Items]
Long-term debt		$ 350.0					0.0
Increase in interest rate		50.00%
Notes payable, other | Boat Holdings, LLC
Debt Instrument [Line Items]
Long-term debt							36.8					$ 76.7
Notes payable to banks
Debt Instrument [Line Items]
Long-term debt		$ 47.1					$ 39.2