v3.25.1
Equity Changes in Accumulated Other Comprehensive Loss, Tax (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended
Mar. 29, 2025
Mar. 30, 2024
Mar. 29, 2025
Mar. 30, 2024
Accumulated Other Comprehensive Income (Loss) [Line Items]        
AOCI Tax, Attributable to Parent, Beginning Balance $ 567 $ 692 $ 718 $ 595
Unrealized gains (losses) arising during the period 46 (49) (60) 10
Reclassifications of realized net (gains) losses to net income 19 27 32 65
AOCI reclassifications to comprehensive income, tax     (58)  
AOCI Tax, Attributable to Parent, Ending Balance 632 670 632 670
Market Value Adjustments for Hedges        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
AOCI Tax, Attributable to Parent, Beginning Balance (38) 34 71 (64)
Unrealized gains (losses) arising during the period 50 (58) (80) 8
Reclassifications of realized net (gains) losses to net income 27 21 48 53
AOCI reclassifications to comprehensive income, tax     0  
AOCI Tax, Attributable to Parent, Ending Balance 39 (3) 39 (3)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
AOCI Tax, Attributable to Parent, Beginning Balance 523 523 531 517
Unrealized gains (losses) arising during the period 0 0 0 0
Reclassifications of realized net (gains) losses to net income (8) 6 (16) 12
AOCI reclassifications to comprehensive income, tax     0  
AOCI Tax, Attributable to Parent, Ending Balance 515 529 515 529
Foreign Currency Translation and Other        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
AOCI Tax, Attributable to Parent, Beginning Balance 82 135 116 142
Unrealized gains (losses) arising during the period (4) 9 20 2
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 $ 78 $ 144 $ 78 $ 144