Quarterly report pursuant to Section 13 or 15(d)

Derivatives and Hedging Activities - Interest Rate Swap Contracts Reflected in Consolidated Balance Sheets (Details)

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Derivatives and Hedging Activities - Interest Rate Swap Contracts Reflected in Consolidated Balance Sheets (Details) - Designated as Hedging Instrument - USD ($)
$ in Thousands
Mar. 31, 2024
Sep. 30, 2023
Interest Rate Swaps | Cash flow hedges    
Derivatives, Fair Value [Line Items]    
Total derivatives $ 1,767 $ 4,006
Cross- Currency Swaps | Net investment hedges    
Derivatives, Fair Value [Line Items]    
Total derivatives (5,076) (2,766)
Other current assets | Interest Rate Swaps | Cash flow hedges    
Derivatives, Fair Value [Line Items]    
Assets derivatives 472 920
Other current assets | Cross- Currency Swaps | Net investment hedges    
Derivatives, Fair Value [Line Items]    
Assets derivatives 0 0
Other assets | Interest Rate Swaps | Cash flow hedges    
Derivatives, Fair Value [Line Items]    
Assets derivatives 1,417 3,086
Other assets | Cross- Currency Swaps | Net investment hedges    
Derivatives, Fair Value [Line Items]    
Assets derivatives 0 0
Other current liabilities | Interest Rate Swaps | Cash flow hedges    
Derivatives, Fair Value [Line Items]    
Liability derivatives (31) 0
Other current liabilities | Cross- Currency Swaps | Net investment hedges    
Derivatives, Fair Value [Line Items]    
Liability derivatives 0 0
Other liabilities | Interest Rate Swaps | Cash flow hedges    
Derivatives, Fair Value [Line Items]    
Liability derivatives (91) 0
Other liabilities | Cross- Currency Swaps | Net investment hedges    
Derivatives, Fair Value [Line Items]    
Liability derivatives $ (5,076) $ (2,766)