Segment Information Capital Expenditures and Depreciation and Amortization (Details 7) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Additional information by Segment (Table Amounts) [Abstract]
Capital Expenditures	$ 1,775	$ 1,435	$ 1,415
Depreciation and amortization	1,338	1,342	1,239
Aeronautics Systems
Additional information by Segment (Table Amounts) [Abstract]
Capital Expenditures	504	490	465
Depreciation and amortization	384	322	266
Defense Systems
Additional information by Segment (Table Amounts) [Abstract]
Capital Expenditures	111	110	133
Depreciation and amortization	107	101	91
Mission Systems
Additional information by Segment (Table Amounts) [Abstract]
Capital Expenditures	288	248	236
Depreciation and amortization	246	242	233
Space Systems
Additional information by Segment (Table Amounts) [Abstract]
Capital Expenditures	798	529	530
Depreciation and amortization	447	396	344
Corporate
Additional information by Segment (Table Amounts) [Abstract]
Capital Expenditures	74	58	51
Depreciation and amortization	$ 154	$ 281	$ 305