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Retirement Plans (Fair Value of Plan Assets of Pension Plans) (Details) - USD ($) $ in Thousands	Sep. 29, 2019	Sep. 30, 2018	Oct. 01, 2017
Defined Benefit Plan Disclosure [Line Items]
Fair value of plan assets	$ 476,194	$ 456,127
Supplemental Employee Retirement Plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	79,893	73,067	$ 78,401
Accumulated benefit obligation	79,893	73,067
Fair value of plan assets	0	0	0
Qualified Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Projected benefit obligation	521,931	457,109	493,767
Accumulated benefit obligation	521,931	457,109
Fair value of plan assets	$ 476,194	$ 456,127	$ 460,709

X

- Definition

Amount of actuarial present value of benefits attributed to employee service rendered, excluding assumptions about future compensation level.

+ References

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Amount of actuarial present value of benefits attributed to service rendered by employee for defined benefit plan.

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Amount of asset segregated and restricted to provide benefit under defined benefit plan. Asset includes, but is not limited to, stock, bond, other investment, earning from investment, and contribution by employer and employee.

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