v3.26.1
Segment and Revenue Information - Components of Financial Accounting Standards and Cost Accounting Standards Adjustment (Details) - Unallocated items, eliminations and other - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Jun. 30, 2026
Jun. 30, 2025
Segment Reporting [Line Items]        
FAS/CAS service cost adjustment $ 155 $ 257 $ 310 $ 519
Pension FAS/CAS service cost adjustment        
Segment Reporting [Line Items]        
FAS/CAS service cost adjustment 92 197 185 390
Postretirement FAS/CAS service cost adjustment        
Segment Reporting [Line Items]        
FAS/CAS service cost adjustment $ 63 $ 60 $ 125 $ 129