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Pension and Other Benefit Programs (Tables)
 12 Months Ended
Oct. 02, 2021
Retirement Benefits [Abstract]  
Benefit Obligations, Assets, Funded Status and Balance Sheet Impacts Associated with Pension and Postretirement Medical Benefit Plans based upon Actuarial Valuations
The following chart summarizes the benefit obligations, assets, funded status and balance sheet impacts associated with the defined benefit pension and postretirement medical benefit plans:
 Pension PlansPostretirement Medical Plans
 October 2,
2021		October 3,
2020		October 2,
2021		October 3,
2020
Projected benefit obligations
Beginning obligations$(20,760) $(18,531) $(2,104) $(1,946) 
Service cost(434) (410) (10) (10) 
Interest cost(457) (527) (47) (56) 
Actuarial gain (loss)(1)
15  (1,958) (13) (127) 
Plan amendments and other20  1  (14) (12) 
Benefits paid661  662  67  47  
Curtailments—  3  —  —  
Ending obligations$(20,955) $(20,760) $(2,121) $(2,104) 
Fair value of plans’ assets
Beginning fair value$15,598  $14,878  $771  $762  
Actual return on plan assets2,653  770  137  38  
Contributions565  664  47  9  
Benefits paid(661) (662) (67) (47) 
Expenses and other(79) (52) 1  9  
Ending fair value$18,076  $15,598  $889  $771  
Underfunded status of the plans$(2,879) $(5,162) $(1,232) $(1,333) 
Amounts recognized in the balance sheet
Non-current assets$88  $20  $—  $—  
Current liabilities(63) (59) (4) (5) 
Non-current liabilities(2,904) (5,123) (1,228) (1,328) 
$(2,879) $(5,162) $(1,232) $(1,333) 
(1)The actuarial loss for 2020 was primarily due to a reduction in the discount rate from the rate that was used in the preceding fiscal year.
Net Periodic Benefit Cost
The components of net periodic benefit cost are as follows:
 Pension PlansPostretirement Medical Plans
 202120202019202120202019
Service cost$434  $410  $345  $10  $10  $8  
Other costs (benefits):
Interest cost457  527  592  47  56  67  
Expected return on plan assets(1,100) (1,084) (978) (55) (57) (56) 
Amortization of prior-year service costs11  13  13  —  —  —  
Recognized net actuarial loss 777  544  260  30  14  —  
Total other costs (benefits)145  —  (113) 22  13  11  
Net periodic benefit cost$579  $410  $232  $32  $23  $19  
Key Assumptions
Key assumptions are as follows:
 Pension PlansPostretirement Medical Plans
 202120202019202120202019
Discount rate used to determine the fiscal year‑end benefit obligation2.88 %2.82 %3.22 %2.89 %2.80 %3.22 %
Discount rate used to determine the interest cost component of net periodic benefit cost2.28 %2.94 %4.09 %2.28 %2.95 %4.10 %
Rate of return on plan assets7.00 %7.00 %7.25 %7.00 %7.00 %7.25 %
Weighted average rate of compensation increase to determine the fiscal year‑end benefit obligation3.10 %3.20 %3.20 %n/an/an/a
Year 1 increase in cost of benefitsn/an/an/a7.00 %7.00 %7.00 %
Rate of increase to which the cost of benefits is assumed to decline (the ultimate trend rate)n/an/an/a4.00 %4.25 %4.25 %
Year that the rate reaches the ultimate trend raten/an/an/a2040 2034 2033
Accumulated Other Comprehensive Loss, Before Tax, Not yet Recognized in Net Periodic Benefit Cost
AOCI, before tax, as of October 2, 2021 consists of the following amounts that have not yet been recognized in net periodic benefit cost:
Pension PlansPostretirement
Medical Plans		Total
Prior service cost$18  $—  $18  
Net actuarial loss6,628  333  6,961  
Total amounts included in AOCI6,646  333  6,979  
Prepaid (accrued) pension cost(3,767) 899  (2,868) 
Net balance sheet liability$2,879  $1,232  $4,111  
Plan Assets Investment Policy Ranges for Major Asset Classes The investment policy ranges for the major asset classes are as follows:
Asset ClassMinimumMaximum
Equity investments30%60%
Fixed income investments20%40%
Alternative investments10%30%
Cash & money market funds—%10%
Defined Benefit Plan Assets Measured at Fair Value
The Company’s defined benefit plan assets are summarized by level in the following tables:
As of October 2, 2021
DescriptionLevel 1Level 2TotalPlan Asset Mix
Cash$77  $—  $77  —%
Common and preferred stocks(1)
4,407  —  4,407  23%
Mutual funds1,326  —  1,326  7%
Government and federal agency bonds, notes and MBS
2,437  349  2,786  15%
Corporate bonds
—  1,098  1,098  6%
Other mortgage- and asset-backed securities—  96  96  1%
Derivatives and other, net
8  21  29  —%
Total investments in the fair value hierarchy $8,255  $1,564  $9,819  
Assets valued at NAV as a practical expedient:
Common collective funds
4,550  24%
Alternative investments4,342  23%
Money market funds and other254  1%
Total investments at fair value$18,965  100%
As of October 3, 2020
DescriptionLevel 1Level 2TotalPlan Asset Mix
Cash$207  $—  $207  1%
Common and preferred stocks(1)
3,308  —  3,308  20%
Mutual funds1,154  —  1,154  7%
Government and federal agency bonds, notes and MBS
2,326  354  2,680  16%
Corporate bonds
—  935  935  6%
Other mortgage- and asset-backed securities—  106  106  1%
Derivatives and other, net
(2) 7  5  —%
Total investments in the fair value hierarchy $6,993  $1,402  $8,395  
Assets valued at NAV as a practical expedient:
Common collective funds
3,993  24%
Alternative investments3,375  21%
Money market funds and other606  4%
Total investments at fair value$16,369  100%
(1)Includes 2.9 million shares of Company common stock valued at $489 million (3% of total plan assets) and 2.9 million shares valued at $355 million (2% of total plan assets) at October 2, 2021 and October 3, 2020, respectively.
Estimated Future Benefit Payments
The following table presents estimated future benefit payments for the next ten fiscal years:
Pension
Plans
Postretirement
Medical Plans(1)
2022$692$61
202369265
202472870
202576974
202681179
2027 – 20314,626459
(1)Estimated future benefit payments are net of expected Medicare subsidy receipts of $81 million.
Long Term Rates of Return by Asset Class The following long-term rates of return by asset class were considered in setting the long-term rate of return on plan assets assumption:
Equity Securities6 %to10 %
Debt Securities2 %to4 %
Alternative Investments6 %to11 %
One Percentage Point (ppt) Change on Projected Benefit Obligations A one percentage point change in the discount rate and expected long-term rate of return on plan assets would have the following effects on the projected benefit obligations for pension and postretirement medical plans as of October 2, 2021 and on cost for fiscal 2022:
 Discount RateExpected Long-Term
Rate of Return On Assets
Increase (decrease)Benefit
Expense		Projected Benefit ObligationsBenefit
Expense
1 percentage point decrease$341  $4,011  $175  
1 percentage point increase(292) (3,402) (175) 
Contribution into Multiemployer Pension Plans and Health and Welfare Plans
The following table sets forth our contributions to multiemployer pension and health and welfare benefit plans:
202120202019
Pension plans$289$221$189
Health & welfare plans272217218
Total contributions$561$438$407