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Revenue Recognition - Summary of Maintenance, Repair, Storage, Rental, Charter Services and Parts and Accessories Revenue for Retail Operations by Location Type (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Disaggregation of Revenue [Line Items]
Revenue	$ 721,844	$ 688,537	$ 1,800,111	$ 1,771,334
Retail Operations [Member] | Maintenance, Repair, Storage, Rental, Charter Services, Parts and Accessories Revenue [Member]
Disaggregation of Revenue [Line Items]
Revenue	102,330	71,824	291,008	184,338
Retail Operations [Member] | Maintenance, Repair, Storage, Rental, Charter Services, Parts and Accessories Revenue [Member] | Marina/Storage Locations [Member]
Disaggregation of Revenue [Line Items]
Revenue	79,793	50,514	206,249	107,843
Retail Operations [Member] | Maintenance, Repair, Storage, Rental, Charter Services, Parts and Accessories Revenue [Member] | Locations Without Marina/Storage [Member]
Disaggregation of Revenue [Line Items]
Revenue	$ 22,537	$ 21,310	$ 84,759	$ 76,495

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