Derivative Instruments and Hedging Activities (Impact of Derivative Instruments on Earnings) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Derivative Instruments Gain Loss [Line Items]
Amount of (Income) Expense Recognized in Earnings on Derivative	$ 17,899	$ 38,186
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative	18,510	32,588
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings	$ 17,899	38,186
Floating-Rate Cross Currency Interest Rate Contract [Member] | Derivatives in Fair Value Hedging Relationships [Member]
Derivative Instruments Gain Loss [Line Items]
Amount of (Income) Expense Recognized in Earnings on Derivative		$ 901
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense	Selling, General and Administrative Expense
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative		$ 896
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense	Selling, General and Administrative Expense
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings		$ 901
Fixed-Rate Cross Currency Interest Rate Contract [Member] | Cash Flow Hedging
Derivative Instruments Gain Loss [Line Items]
Amount of (Income) Expense Recognized in Earnings on Derivative	$ 17,899	$ 37,285
Derivative, Gain (Loss), Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense	Selling, General and Administrative Expense
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative	$ 18,510	$ 31,692
Derivative Instrument, Gain (Loss) Reclassified from AOCI into Income, Effective Portion, Statement of Income or Comprehensive Income [Extensible Enumeration]	Selling, General and Administrative Expense	Selling, General and Administrative Expense
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings	$ 17,899	$ 37,285