Segment Information (Unaudited) Sales by Customer Type (Details 2) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Revenue, Major Customer [Line Items]
Revenues	$ 10,351	$ 10,218	$ 19,819	$ 20,351
US Government
Revenue, Major Customer [Line Items]
Revenues	$ 8,768	$ 8,888	$ 16,791	$ 17,732
Sales percentage	85.00%	87.00%	85.00%	87.00%
International(2)
Revenue, Major Customer [Line Items]
Revenues	$ 1,401	$ 1,185	$ 2,687	$ 2,347
Sales percentage	13.00%	12.00%	13.00%	12.00%
Other Customers [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 182	$ 145	$ 341	$ 272
Sales percentage	2.00%	1.00%	2.00%	1.00%
Aeronautics Systems [Member] | US Government
Revenue, Major Customer [Line Items]
Revenues	$ 2,526	$ 2,606	$ 4,816	$ 5,190
Sales percentage	82.00%	86.00%	82.00%	86.00%
Aeronautics Systems [Member] | International(2)
Revenue, Major Customer [Line Items]
Revenues	$ 544	$ 415	$ 1,022	$ 839
Sales percentage	18.00%	14.00%	18.00%	14.00%
Aeronautics Systems [Member] | Other Customers [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 6	$ 5	$ 11	$ 9
Sales percentage	0.00%	0.00%	0.00%	0.00%
Aeronautics Systems [Member] | Intersegment Sales [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 38	$ 34	$ 79	$ 66
Aeronautics Systems [Member] | Operating Segments [Member]
Revenue, Major Customer [Line Items]
Revenues	3,114	3,060	5,928	6,104
Defense Systems [Member] | US Government
Revenue, Major Customer [Line Items]
Revenues	$ 1,611	$ 1,508	$ 3,062	$ 2,963
Sales percentage	83.00%	83.00%	83.00%	85.00%
Defense Systems [Member] | International(2)
Revenue, Major Customer [Line Items]
Revenues	$ 305	$ 287	$ 594	$ 506
Sales percentage	16.00%	16.00%	16.00%	14.00%
Defense Systems [Member] | Other Customers [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 22	$ 19	$ 42	$ 40
Sales percentage	1.00%	1.00%	1.00%	1.00%
Defense Systems [Member] | Intersegment Sales [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 53	$ 45	$ 98	$ 87
Defense Systems [Member] | Operating Segments [Member]
Revenue, Major Customer [Line Items]
Revenues	1,991	1,859	3,796	3,596
Mission Systems [Member] | US Government
Revenue, Major Customer [Line Items]
Revenues	$ 2,282	$ 2,028	$ 4,255	$ 3,940
Sales percentage	81.00%	82.00%	80.00%	81.00%
Mission Systems [Member] | International(2)
Revenue, Major Customer [Line Items]
Revenues	$ 505	$ 427	$ 980	$ 881
Sales percentage	18.00%	17.00%	19.00%	18.00%
Mission Systems [Member] | Other Customers [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 29	$ 21	$ 53	$ 37
Sales percentage	1.00%	1.00%	1.00%	1.00%
Mission Systems [Member] | Intersegment Sales [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 341	$ 297	$ 676	$ 574
Mission Systems [Member] | Operating Segments [Member]
Revenue, Major Customer [Line Items]
Revenues	3,157	2,773	5,964	5,432
Space Systems [Member] | US Government
Revenue, Major Customer [Line Items]
Revenues	$ 2,349	$ 2,746	$ 4,658	$ 5,639
Sales percentage	93.00%	95.00%	93.00%	95.00%
Space Systems [Member] | International(2)
Revenue, Major Customer [Line Items]
Revenues	$ 47	$ 56	$ 91	$ 121
Sales percentage	2.00%	2.00%	2.00%	2.00%
Space Systems [Member] | Other Customers [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 125	$ 100	$ 235	$ 186
Sales percentage	5.00%	3.00%	5.00%	3.00%
Space Systems [Member] | Intersegment Sales [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 125	$ 100	$ 230	$ 205
Space Systems [Member] | Operating Segments [Member]
Revenue, Major Customer [Line Items]
Revenues	$ 2,646	$ 3,002	$ 5,214	$ 6,151