Segment Information (Unaudited) Sales by Contract Type (Details 3) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Revenue, Contract Type [Line Items]
Revenues	$ 10,218	$ 9,576	$ 20,351	$ 18,877
Sales percentage	100.00%	100.00%	100.00%	100.00%
Cost-type [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 5,293	$ 5,252	$ 10,490	$ 10,313
Sales percentage	52.00%	55.00%	52.00%	55.00%
Cost-type [Member] | Aeronautics Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 1,381	$ 1,319	$ 2,694	$ 2,550
Sales percentage	48.00%	52.00%	46.00%	51.00%
Cost-type [Member] | Defense Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 353	$ 404	$ 713	$ 827
Sales percentage	27.00%	33.00%	28.00%	34.00%
Cost-type [Member] | Mission Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 1,107	$ 957	$ 2,174	$ 1,918
Sales percentage	45.00%	41.00%	45.00%	41.00%
Cost-type [Member] | Space Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 2,452	$ 2,572	$ 4,909	$ 5,018
Sales percentage	69.00%	74.00%	68.00%	74.00%
Fixed-price [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 4,925	$ 4,324	$ 9,861	$ 8,564
Sales percentage	48.00%	45.00%	48.00%	45.00%
Fixed-price [Member] | Aeronautics Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 1,523	$ 1,212	$ 3,120	$ 2,431
Sales percentage	52.00%	48.00%	54.00%	49.00%
Fixed-price [Member] | Defense Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 937	$ 821	$ 1,790	$ 1,605
Sales percentage	73.00%	67.00%	72.00%	66.00%
Fixed-price [Member] | Mission Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 1,369	$ 1,401	$ 2,684	$ 2,766
Sales percentage	55.00%	59.00%	55.00%	59.00%
Fixed-price [Member] | Space Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 1,096	$ 890	$ 2,267	$ 1,762
Sales percentage	31.00%	26.00%	32.00%	26.00%
Intersegment sales | Aeronautics Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 59	$ 64	$ 118	$ 129
Intersegment sales | Defense Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	223	195	422	364
Intersegment sales | Mission Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	297	283	574	520
Intersegment sales | Space Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	25	26	52	58
Operating Segments [Member] | Aeronautics Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 2,963	$ 2,595	$ 5,932	$ 5,110
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Defense Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 1,513	$ 1,420	$ 2,925	$ 2,796
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Mission Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 2,773	$ 2,641	$ 5,432	$ 5,204
Sales percentage	100.00%	100.00%	100.00%	100.00%
Operating Segments [Member] | Space Systems [Member]
Revenue, Contract Type [Line Items]
Revenues	$ 3,573	$ 3,488	$ 7,228	$ 6,838
Sales percentage	100.00%	100.00%	100.00%	100.00%