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Indebtedness (Line of Credit Facility Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2023	Oct. 01, 2022	Oct. 02, 2021
Debt Instrument
Pledged Assets, NBV	$ 3,808,036	$ 3,431,841	$ 3,433,169
Unused borrowing capacity	712,475
Line of Credit | U.S. revolving credit facility
Debt Instrument
Line of Credit Facility, Current Borrowing Capacity	1,100,000
Expansion option to increase credit facility	$ 400,000
Debt, Weighted Average Interest Rate	6.93%
Applicable margin in interest rate of revolving credit facility, basis points	1.60%
Unused borrowing capacity	$ 710,475
Line of Credit | SECT revolving credit facility
Debt Instrument
Line of Credit Facility, Current Borrowing Capacity	$ 35,000
Applicable margin in interest rate of revolving credit facility, basis points	2.23%
Senior Notes | Senior notes 4.25%
Debt Instrument
Debt Instrument, Face Amount	$ 500,000
Debt Instrument, Interest Rate, Stated Percentage	4.25%
Debt Instrument, Interest Rate, Effective Percentage	4.60%
Asset Pledged as Collateral
Debt Instrument
Pledged Assets, NBV	$ 1,636,196

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