Derivative Financial Instruments (Fair Values) (Details) - Fair Value, Recurring - Fair Value, Inputs, Level 2 - Designated as Hedging Instrument - USD ($) $ in Thousands	Sep. 30, 2021	Sep. 30, 2020
Interest rate swaps | Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	$ 3,127	$ 0
Interest rate swaps | Other Current Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	303	4,669
Foreign currency forward contracts | Prepaid Expenses and Other Current Assets
Derivatives, Fair Value [Line Items]
Asset derivatives	6	133
Foreign currency forward contracts | Other Current Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	102	47
Commodity swaps | Other Current Liabilities
Derivatives, Fair Value [Line Items]
Liability derivatives	$ 19	$ 0