v3.25.2
Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 28, 2025
Jun. 29, 2024
Jun. 28, 2025
Jun. 29, 2024
Defined Benefit Plan Disclosure [Line Items]        
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component $ (67) $ (99) $ (198) $ (302)
Pension Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service costs 65 62 196 187
Interest costs 195 209 587 626
Expected return on plan assets (290) (284) (871) (853)
Amortization of previously deferred service costs (credits) 0 2 2 6
Recognized net actuarial loss (gain) 62 5 185 15
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component (33) (68) (97) (206)
Net periodic benefit cost (income) 32 (6) 99 (19)
Postretirement Medical Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service costs 0 1 0 1
Interest costs 11 14 33 41
Expected return on plan assets (15) (14) (45) (43)
Amortization of previously deferred service costs (credits) (22) (22) (67) (67)
Recognized net actuarial loss (gain) (8) (9) (22) (27)
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component (34) (31) (101) (96)
Net periodic benefit cost (income) $ (34) $ (30) $ (101) $ (95)