v3.26.1
Equity Changes in Accumulated Other Comprehensive Loss, Tax (Details) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Jun. 27, 2026
Jun. 28, 2025
Jun. 27, 2026
Jun. 28, 2025
Accumulated Other Comprehensive Income (Loss) [Line Items]        
AOCI Tax, Attributable to Parent, Beginning Balance $ 618 $ 632 $ 621 $ 718
Unrealized gains (losses) arising during the period 19 58 48 (2)
Reclassifications of realized net (gains) losses to net income (20) 9 (52) 41
AOCI reclassifications to comprehensive income, tax       (58)
AOCI Tax, Attributable to Parent, Ending Balance 617 699 617 699
Market Value Adjustments for Hedges        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
AOCI Tax, Attributable to Parent, Beginning Balance 55 39 120 71
Unrealized gains (losses) arising during the period 8 99 (23) 19
Reclassifications of realized net (gains) losses to net income (21) 17 (55) 65
AOCI reclassifications to comprehensive income, tax       0
AOCI Tax, Attributable to Parent, Ending Balance 42 155 42 155
Unrecognized Pension and  Postretirement Medical  Expense        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
AOCI Tax, Attributable to Parent, Beginning Balance 448 515 446 531
Unrealized gains (losses) arising during the period 0 0 0 0
Reclassifications of realized net (gains) losses to net income 1 (8) 3 (24)
AOCI reclassifications to comprehensive income, tax       0
AOCI Tax, Attributable to Parent, Ending Balance 449 507 449 507
Foreign Currency Translation and Other        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
AOCI Tax, Attributable to Parent, Beginning Balance 115 78 55 116
Unrealized gains (losses) arising during the period 11 (41) 71 (21)
Reclassifications of realized net (gains) losses to net income 0 0 0 0
AOCI reclassifications to comprehensive income, tax       (58)
AOCI Tax, Attributable to Parent, Ending Balance $ 126 $ 37 $ 126 $ 37