v3.25.3
Acquisitions, Goodwill and Intangible Assets (Changes in Goodwill by Segment) (Details) - USD ($)
$ in Millions
 9 Months Ended 12 Months Ended
Oct. 03, 2025
Jan. 03, 2025
Goodwill [Roll Forward]    
Beginning balance, goodwill $ 6,084 $ 6,112
Acquisition of a business 229  
Foreign currency translation adjustments 29 (28)
Ending balance, goodwill 6,342 6,084
National Security & Digital    
Goodwill [Roll Forward]    
Beginning balance, goodwill 2,758 2,758
Acquisition of a business 229  
Foreign currency translation adjustments 0 0
Ending balance, goodwill 2,987 2,758
Health & Civil    
Goodwill [Roll Forward]    
Beginning balance, goodwill 1,366 1,366
Acquisition of a business 0  
Foreign currency translation adjustments 0 0
Ending balance, goodwill 1,366 1,366
Commercial & International    
Goodwill [Roll Forward]    
Beginning balance, goodwill 772 800
Acquisition of a business 0  
Foreign currency translation adjustments 29 (28)
Ending balance, goodwill 801 772
Accumulated goodwill impairment losses 596  
Defense Systems    
Goodwill [Roll Forward]    
Beginning balance, goodwill 1,188 1,188
Acquisition of a business 0  
Foreign currency translation adjustments 0 0
Ending balance, goodwill $ 1,188 $ 1,188