Credit Facilities, Short-term Borrowings and Long-term Debt (Narrative) (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Dec. 31, 2022 USD ($)	Sep. 30, 2022 USD ($)
Debt Instrument [Line Items]
Short-term debt	$ 109,300	$ 66,800
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit facility, maximum borrowing capacity	1,000,000
Line of credit facility, maximum borrowing capacity extension	1,500,000
Principal amount borrowing outstanding	$ 109,300	$ 66,800
Effective interest rate	0.0575	0.0424
Foreign Lines of Credit and Overdraft Facilities [Member]
Debt Instrument [Line Items]
Short-term debt	$ 0	$ 0
Minimum [Member] | SOFR [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	0.875%
Maximum [Member] | SOFR [Member] | Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Basis spread on variable rate	1.75%