Indebtedness (Components of Long-term debt) (Details) - USD ($) $ in Thousands	Mar. 28, 2020	Sep. 28, 2019
Line of Credit Facility
Securitization program	$ 130,000	$ 130,000
Obligations under capital leases	0	679
Senior debt	1,103,439	833,391
Less deferred debt issuance cost	(9,473)	(158)
Less current installments	0	(249)
Long-term debt	1,093,966	832,984
U.S. revolving credit facility
Line of Credit Facility
Revolving credit facility	464,439	395,712
SECT revolving credit facility
Line of Credit Facility
Revolving credit facility	9,000	7,000
Senior notes 4.25%
Line of Credit Facility
Senior notes	500,000	0
Senior notes 5.25%
Line of Credit Facility
Senior notes	$ 0	$ 300,000

Amount equal to the present value (the principal) at the beginning of the lease term of minimum lease payments during the lease term (excluding that portion of the payments representing executory costs such as insurance, maintenance, and taxes to be paid by the lessor, together with any profit thereon) net of payments or other amounts applied to the principal through the balance sheet date.

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