Derivative Financial Instruments (Amounts Recognized in AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2023	Mar. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized derivative (loss) gain on cash flow hedges, net of tax	$ (5,502)	$ 21,730	$ (7,288)	$ 28,311
Other Comprehensive Income (Loss) | Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized derivative (loss) gain on cash flow hedges, net of tax	(462)	21,185	1,256	27,058
Interest rate swaps | Other Comprehensive Income (Loss) | Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized derivative (loss) gain on cash flow hedges, net of tax	(54)	21,077	2,045	26,948
Foreign currency forward contracts | Other Comprehensive Income (Loss) | Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized derivative (loss) gain on cash flow hedges, net of tax	(401)	100	(790)	82
Commodity swaps | Other Comprehensive Income (Loss) | Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Unrealized derivative (loss) gain on cash flow hedges, net of tax	$ (7)	$ 8	$ 1	$ 28