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Derivative Instruments - Hedging Activities (Details) - Currency Swap - Designated as Hedging Instrument
$ in Thousands, € in Millions
3 Months Ended 6 Months Ended
Feb. 01, 2024
USD ($)
$ / €
Feb. 01, 2023
USD ($)
$ / €
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Mar. 31, 2024
USD ($)
Mar. 31, 2023
USD ($)
Feb. 01, 2024
EUR (€)
$ / €
Sep. 30, 2023
USD ($)
Feb. 01, 2023
EUR (€)
$ / €
Feb. 01, 2022
USD ($)
Feb. 01, 2022
EUR (€)
Derivative [Line Items]                      
Derivative, notional amount, cross-currency swap, exchanged $ 76,000 $ 436,000               $ 1,000,000  
Derivative, notional amount, cross-currency swap, received | €             € 70.0   € 400.0   € 915.0
Derivative, notional amount     $ 75,978   $ 75,978     $ 436,360   $ 960,000  
Derivative, fixed interest rate (as a percent)                   1.28% 1.28%
Derivative, notional amount, cross-currency swap, maturity, deliver | €             € 400.0   € 852.0    
Derivative, notional amount, cross-currency swap, maturity, receive $ 436,000 $ 960,000                  
Derivative, forward exchange rate | $ / € 1.09 1.13         1.09   1.13    
Gain on derivative $ 1,400 $ 29,300                  
Interest income     $ 1,300 $ 2,200 $ 3,100 $ 5,300          
Weighted Average                      
Derivative [Line Items]                      
Derivative, variable interest rate 1.44% 1.66%         1.44%   1.66% 1.20% 1.20%