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Schedule Of Unallocated Items and Eliminations (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jun. 30, 2022
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Segment Reporting Information [Line Items]        
Share-based plans     $ (352) $ (493)
Research and Development Expense $ (698) $ (497) (1,331) (996)
Corporate Reconciling Items And Eliminations        
Segment Reporting Information [Line Items]        
Share-based plans (25) (14) (108) (142)
Deferred compensation 124 (42) 166 (94)
Amortization of previously capitalized interest (24) (22) (47) (44)
Research and Development Expense (66) (43) (118) (85)
Eliminations and other unallocated items (103) (177) (247) (297)
Unallocated items, eliminations and other (94) (298) (354) (662)
FAS/CAS service cost adjustment 284 268 567 538
Corporate Reconciling Items And Eliminations | Pension Plans, Defined Benefit        
Segment Reporting Information [Line Items]        
FAS/CAS service cost adjustment 205 191 413 384
Corporate Reconciling Items And Eliminations | Other Postretirement Benefit Plan, Defined Benefit        
Segment Reporting Information [Line Items]        
FAS/CAS service cost adjustment $ 79 $ 77 $ 154 $ 154