Notes Payable - Rental Textuals (Details) - USD ($) $ in Millions	12 Months Ended
	Sep. 30, 2023	Oct. 31, 2023	Sep. 30, 2022
Debt Instrument [Line Items]
Letters of credit, amount outstanding	$ 254.3
Rental
Debt Instrument [Line Items]
Line of credit, current borrowing capacity	1,025.0
Line of credit, maximum borrowing capacity	1,250.0
Letter of Credit, Maximum Borrowing Capacity (in dollars)	$ 100.0
Letter of Credit, Maximum Borrowing Capacity	50.00%
Line of credit, amount outstanding	$ 400.0		$ 800.0
Line of Credit Facility, Interest Rate at Period End	7.70%
Letters of credit, amount outstanding	$ 0.0
Line of Credit Facility, Remaining Borrowing Capacity	625.0
Proceeds from Lines of Credit	700.0
Repayments of Lines of Credit	$ 1,100.0
Rental | Subsequent Event [Member]
Debt Instrument [Line Items]
Line of credit, maximum borrowing capacity		$ 2,000.0