Variable Interest Entity - Condensed Consolidated Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Sep. 30, 2023
Variable Interest Entity [Line Items]
Restricted cash and cash equivalents	$ 1,516	$ 3,844
Other current assets	288,068	292,036
Securitized intangible asset, net	82,844	92,202
Accrued interest	106,116	78,939
Current maturities of securitized long-term debt	8,207	9,922
Securitized long-term debt	76,871	85,078
Variable Interest Entity, Primary Beneficiary
Variable Interest Entity [Line Items]
Restricted cash and cash equivalents	1,516	3,844
Other current assets	3	11
Securitized intangible asset, net	82,844	92,202
Accrued interest	365	1,374
Current maturities of securitized long-term debt	8,207	9,922
Securitized long-term debt	$ 76,871	$ 85,078