Segment Financial Data (Segment Information) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Net sales	$ 68,920	$ 67,074	$ 64,388
Operating Income (Loss)	$ 3,561	$ 5,504	$ 5,136
Operating Profit Margin	5.20%	8.20%	8.00%
Total Assets	$ 161,869	$ 158,864
Capital Expenditures	2,415	2,288	$ 2,134
Depreciation & Amortization	4,211	4,108	4,557
Operating Segments
Segment Reporting Information [Line Items]
Net sales	70,899	68,758	65,913
Operating Income (Loss)	$ 4,749	$ 6,339	$ 6,233
Operating Profit Margin	6.70%	9.20%	9.50%
Total Assets	$ 157,737	$ 152,275
Capital Expenditures	2,290	2,183	$ 1,955
Depreciation & Amortization	2,004	2,006	1,887
Intersegment Eliminations
Segment Reporting Information [Line Items]
Net sales	(1,979)	(1,684)	(1,525)
Operating Income (Loss)	(42)	(23)	4
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Net sales	0	0	0
Operating Income (Loss)	(275)	(318)	(552)
Total Assets	4,132	6,589
Capital Expenditures	125	105	179
Depreciation & Amortization	126	101	155
Collins Aerospace Systems [Member] | Operating Segments
Segment Reporting Information [Line Items]
Net sales	26,253	23,052	21,152
Operating Income (Loss)	$ 3,825	$ 2,816	$ 2,380
Operating Profit Margin	14.60%	12.20%	11.30%
Total Assets	$ 72,085	$ 70,404
Capital Expenditures	628	671	$ 697
Depreciation & Amortization	724	756	741
Pratt and Whitney [Member] | Operating Segments
Segment Reporting Information [Line Items]
Net sales	18,296	20,530	18,150
Operating Income (Loss)	$ (1,455)	$ 1,075	$ 454
Operating Profit Margin	(8.00%)	5.20%	2.50%
Total Assets	$ 40,723	$ 36,205
Capital Expenditures	1,025	949	$ 700
Depreciation & Amortization	736	724	642
Raytheon | Operating Segments
Segment Reporting Information [Line Items]
Net sales	26,350	25,176	26,611
Operating Income (Loss)	$ 2,379	$ 2,448	$ 3,399
Operating Profit Margin	9.00%	9.70%	12.80%
Total Assets	$ 44,929	$ 45,666
Capital Expenditures	637	563	$ 558
Depreciation & Amortization	544	526	504
FAS/CAS Operating Adjustment | Segment Reconciling Items
Segment Reporting Information [Line Items]
Net sales	0	0	0
Operating Income (Loss)	1,127	1,399	1,654
Acquisition Accounting Adjustments | Segment Reconciling Items
Segment Reporting Information [Line Items]
Net sales	0	0	0
Operating Income (Loss)	(1,998)	(1,893)	(2,203)
Depreciation & Amortization	$ 2,081	$ 2,001	$ 2,515