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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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