Segment Information (Unaudited) Capital Expenditures and Depreciation and Amortization (Details 5) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Segment Reporting Information [Line Items]
Capital Expenditures	$ 231	$ 320	$ 487	$ 590
Depreciation and amortization	350	326	687	625
Aeronautics Systems [Member]
Segment Reporting Information [Line Items]
Capital Expenditures	69	116	148	200
Depreciation and amortization	92	99	181	174
Defense Systems [Member]
Segment Reporting Information [Line Items]
Capital Expenditures	11	14	23	22
Depreciation and amortization	42	43	85	85
Mission Systems [Member]
Segment Reporting Information [Line Items]
Capital Expenditures	47	38	86	81
Depreciation and amortization	68	62	135	124
Space Systems [Member]
Segment Reporting Information [Line Items]
Capital Expenditures	71	146	181	273
Depreciation and amortization	84	81	163	160
Corporate [Member]
Segment Reporting Information [Line Items]
Capital Expenditures	33	6	49	14
Depreciation and amortization	$ 64	$ 41	$ 123	$ 82