v3.25.1
Net Periodic Benefit Cost (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Mar. 29, 2025
Mar. 30, 2024
Mar. 29, 2025
Mar. 30, 2024
Defined Benefit Plan Disclosure [Line Items]        
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component $ (65) $ (103) $ (131) $ (203)
Pension Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service costs 66 63 131 125
Interest costs 197 209 392 417
Expected return on plan assets (291) (285) (581) (569)
Amortization of previously deferred service costs (credits) 2 2 2 4
Recognized net actuarial loss (gain) 61 5 123 10
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component (31) (69) (64) (138)
Net periodic benefit cost (income) 35 (6) 67 (13)
Postretirement Medical Plans        
Defined Benefit Plan Disclosure [Line Items]        
Service costs 0 0 0 0
Interest costs 11 13 22 27
Expected return on plan assets (15) (15) (30) (29)
Amortization of previously deferred service costs (credits) (23) (23) (45) (45)
Recognized net actuarial loss (gain) (7) (9) (14) (18)
Net Periodic Defined Benefits Expense (Reversal of Expense), Excluding Service Cost Component (34) (34) (67) (65)
Net periodic benefit cost (income) $ (34) $ (34) $ (67) $ (65)