Segment Financial Data (Disaggregation of Revenue) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Segment Reporting Information [Line Items]
Revenues	$ 16,951	$ 16,213	$ 48,981	$ 47,344
Product [Member]
Segment Reporting Information [Line Items]
Revenues	12,756	12,331	36,876	36,174
Service [Member]
Segment Reporting Information [Line Items]
Revenues	4,195	3,882	12,105	11,170
U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	7,555	7,737	22,452	23,155
Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	1,275	1,364	3,632	4,156
Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	1,064	1,242	3,118	3,735
Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	7,057	5,870	19,779	16,298
UNITED STATES
Segment Reporting Information [Line Items]
Revenues	10,422	10,096	30,337	29,697
Europe [Member]
Segment Reporting Information [Line Items]
Revenues	2,663	2,408	7,913	6,871
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	2,160	2,006	5,825	5,780
Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	978	1,140	2,676	3,299
Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	728	563	2,230	1,697
Collins Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	5,100	4,592	14,935	13,507
Collins Aerospace Systems [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	3,669	3,336	10,728	9,867
Collins Aerospace Systems [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	992	891	3,005	2,571
Collins Aerospace Systems [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	1,066	1,101	3,140	3,470
Collins Aerospace Systems [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	57	54	164	119
Collins Aerospace Systems [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	205	258	719	804
Collins Aerospace Systems [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	3,333	2,814	9,710	8,045
Collins Aerospace Systems [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,455	2,334	7,162	6,899
Collins Aerospace Systems [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	1,231	1,066	3,815	3,207
Collins Aerospace Systems [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	533	465	1,485	1,340
Collins Aerospace Systems [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	132	136	363	346
Collins Aerospace Systems [Member] | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	310	226	908	646
Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	5,380	4,725	14,878	13,035
Pratt & Whitney [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	3,183	2,877	8,798	7,882
Pratt & Whitney [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	2,195	1,848	6,078	5,153
Pratt & Whitney [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	1,324	1,295	3,915	3,748
Pratt & Whitney [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	295	322	796	961
Pratt & Whitney [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	116	126	335	392
Pratt & Whitney [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	3,643	2,982	9,830	7,934
Pratt & Whitney [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,756	2,367	7,630	6,665
Pratt & Whitney [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	1,074	943	3,010	2,376
Pratt & Whitney [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	1,028	1,007	2,726	2,771
Pratt & Whitney [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	160	127	350	316
Pratt & Whitney [Member] | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	360	281	1,160	907
Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	3,626	3,740	10,768	11,310
Raytheon Intelligence & Space [Member] | Fixed-price Contract
Segment Reporting Information [Line Items]
Revenues	1,369	1,506	4,062	4,533
Raytheon Intelligence & Space [Member] | Cost-type Contract
Segment Reporting Information [Line Items]
Revenues	1,921	1,921	5,726	5,840
Raytheon Intelligence & Space [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	2,637	2,613	7,805	7,964
Raytheon Intelligence & Space [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	653	814	1,983	2,409
Raytheon Intelligence & Space [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	2,877	2,923	8,494	8,767
Raytheon Intelligence & Space [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	135	210	444	627
Raytheon Intelligence & Space [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	204	216	620	662
Raytheon Intelligence & Space [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	74	78	230	317
Raytheon Intelligence & Space [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,922	2,977	8,640	8,962
Raytheon Intelligence & Space [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	102	107	312	339
Raytheon Intelligence & Space [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	187	199	540	608
Raytheon Intelligence & Space [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	48	105	191	370
Raytheon Intelligence & Space [Member] | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	31	39	105	94
Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	3,678	3,902	10,763	11,680
Raytheon Missiles & Defense | Fixed-price Contract
Segment Reporting Information [Line Items]
Revenues	2,127	2,401	6,245	7,054
Raytheon Missiles & Defense | Cost-type Contract
Segment Reporting Information [Line Items]
Revenues	1,491	1,434	4,331	4,429
Raytheon Missiles & Defense | Product [Member]
Segment Reporting Information [Line Items]
Revenues	3,263	3,506	9,537	10,446
Raytheon Missiles & Defense | Service [Member]
Segment Reporting Information [Line Items]
Revenues	355	329	1,039	1,037
Raytheon Missiles & Defense | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	2,284	2,414	6,895	7,155
Raytheon Missiles & Defense | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	788	778	2,228	2,449
Raytheon Missiles & Defense | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	539	642	1,444	1,877
Raytheon Missiles & Defense | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	7	1	9	2
Raytheon Missiles & Defense | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,285	2,414	6,897	7,156
Raytheon Missiles & Defense | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	256	297	776	949
Raytheon Missiles & Defense | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	412	335	1,074	1,061
Raytheon Missiles & Defense | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	638	772	1,772	2,267
Raytheon Missiles & Defense | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	27	17	57	50
Other Segments
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Other Segments | Product [Member]
Segment Reporting Information [Line Items]
Revenues	4	(1)	8	15
Other Segments | Service [Member]
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Other Segments | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	4	4	8	15
Other Segments | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Other Segments | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Other Segments | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	0	(5)	0	0
Other Segments | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	4	4	8	15
Other Segments | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	0	(5)	0	0
Other Segments | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Other Segments | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Other Segments | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Operating Segments
Segment Reporting Information [Line Items]
Revenues	17,784	16,959	51,344	49,532
Operating Segments | Collins Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	4,661	4,227	13,733	12,438
Operating Segments | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	5,378	4,725	14,876	13,035
Operating Segments | Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	3,290	3,427	9,788	10,373
Operating Segments | Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	3,618	3,835	10,576	11,483
Operating Segments | Other Segments
Segment Reporting Information [Line Items]
Revenues	4	(1)	8	15
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues	(833)	(746)	(2,363)	(2,188)
Intersegment Eliminations | Collins Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	439	365	1,202	1,069
Intersegment Eliminations | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	2	0	2	0
Intersegment Eliminations | Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	336	313	980	937
Intersegment Eliminations | Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	60	67	187	197
Intersegment Eliminations | Other Segments
Segment Reporting Information [Line Items]
Revenues	$ (837)	$ (745)	$ (2,371)	$ (2,203)