Goodwill and Other Purchased Intangible Assets Goodwill Rollforward (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Goodwill (Table Amounts)
Beginning balance	$ 17,516	$ 17,515
Other	1	1
Ending balance	17,517	17,516
Aeronautics Systems
Goodwill (Table Amounts)
Beginning balance	3,467	3,467
Other	0	0
Ending balance	3,467	3,467
Defense Systems
Goodwill (Table Amounts)
Beginning balance	3,413	3,412
Other	1	1
Ending balance	3,414	3,413
Mission Systems
Goodwill (Table Amounts)
Beginning balance	5,881	5,881
Other	0	0
Ending balance	5,881	5,881
Space Systems
Goodwill (Table Amounts)
Beginning balance	4,755	4,755
Other	0	0
Ending balance	$ 4,755	$ 4,755