Goodwill and Other Purchased Intangible Assets Goodwill Rollforward (Details 1) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Goodwill (Table Amounts)
Beginning balance	$ 17,517	$ 17,516
Other	(5)	1
Ending balance	17,512	17,517
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	4,229	4,228
Other	(5)	1
Ending balance	4,224	4,229
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	3,940	3,940
Other	0	0
Ending balance	$ 3,940	$ 3,940