Segment Information (Unaudited) Capital Expenditures and Depreciation and Amortization (Details 5) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024
Segment Reporting Information [Line Items]
Capital Expenditures	$ 256	$ 270
Depreciation and amortization	337	299
Aeronautics Systems [Member]
Segment Reporting Information [Line Items]
Capital Expenditures	79	84
Depreciation and amortization	89	75
Defense Systems [Member]
Segment Reporting Information [Line Items]
Capital Expenditures	12	8
Depreciation and amortization	43	42
Mission Systems [Member]
Segment Reporting Information [Line Items]
Capital Expenditures	39	43
Depreciation and amortization	67	62
Space Systems [Member]
Segment Reporting Information [Line Items]
Capital Expenditures	110	127
Depreciation and amortization	79	79
Corporate [Member]
Segment Reporting Information [Line Items]
Capital Expenditures	16	8
Depreciation and amortization	$ 59	$ 41