Derivative Instruments and Hedging Activities (Impact of Derivative Instruments on Earnings) (Details) - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Derivative Instruments Gain Loss [Line Items]
Amount of (Income) Expense Recognized in Earnings on Derivative	$ 38,186	$ (10,075)
Amount of (Gain) Loss Recognized in Accumulated OCI on Derivative	32,588	(12,369)
Amount of (Gain) Loss Reclassified from Accumulated OCI into Earnings	38,186	(10,075)
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	$ (622)
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	$ (500)
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	$ (622)
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	$ 37,285	$ (9,453)
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	$ 31,692	$ (11,869)
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	$ 37,285	$ (9,453)