Income Taxes (Components of Net Deferred Tax Assets) (Details) - USD ($) $ in Thousands	Oct. 01, 2021	Oct. 02, 2020
Obligations relating to:
Defined benefit pension plans	$ 9,702	$ 55,949
Other employee benefit plans	156,931	132,613
Net operating losses	197,929	197,987
Foreign tax credit	87,689	87,259
Contract revenues and costs	81,633	68,870
Investments	0	65,235
Lease liability	155,064	154,979
Deferred interest	9,988	11,410
Valuation allowance	(188,662)	(140,578)
Gross deferred tax assets	510,274	633,724
Deferred tax liabilities:
Depreciation and amortization	(436,324)	(240,097)
Lease right of use asset	(93,338)	(89,824)
Unremitted earnings	(7,111)	(17,295)
Partnership investment	(72,560)	(66,082)
Other, net	(12,128)	(12,745)
Gross deferred tax liabilities	(621,461)	(426,043)
Net deferred tax (liabilities) assets	$ (111,187)
Net deferred tax (liabilities) assets		$ 207,681

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Amount of deferred tax liability attributable to taxable temporary differences.

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