Segment Financial Data (Disaggregation of Revenue) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Segment Reporting Information [Line Items]
Revenues	$ 16,314	$ 15,880	$ 32,030	$ 31,131
Product [Member]
Segment Reporting Information [Line Items]
Revenues	12,258	12,179	24,120	23,843
Service [Member]
Segment Reporting Information [Line Items]
Revenues	4,056	3,701	7,910	7,288
U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	7,559	7,670	14,897	15,418
Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	1,181	1,497	2,357	2,792
Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	1,095	1,313	2,054	2,493
Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	6,479	5,400	12,722	10,428
UNITED STATES
Segment Reporting Information [Line Items]
Revenues	10,185	9,871	19,915	19,601
Europe [Member]
Segment Reporting Information [Line Items]
Revenues	2,678	2,316	5,250	4,463
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	1,808	2,002	3,665	3,774
Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	869	1,167	1,698	2,159
Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	774	524	1,502	1,134
Collins Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	5,011	4,545	9,835	8,915
Collins Aerospace Systems [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	3,577	3,349	7,059	6,531
Collins Aerospace Systems [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	1,030	824	2,013	1,680
Collins Aerospace Systems [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	1,023	1,147	2,074	2,369
Collins Aerospace Systems [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	53	25	107	65
Collins Aerospace Systems [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	263	301	514	546
Collins Aerospace Systems [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	3,268	2,700	6,377	5,231
Collins Aerospace Systems [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,458	2,323	4,707	4,565
Collins Aerospace Systems [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	1,270	1,062	2,584	2,141
Collins Aerospace Systems [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	455	470	952	875
Collins Aerospace Systems [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	119	115	231	210
Collins Aerospace Systems [Member] | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	305	203	598	420
Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	4,969	4,280	9,498	8,310
Pratt & Whitney [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	2,982	2,582	5,615	5,005
Pratt & Whitney [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	1,987	1,698	3,883	3,305
Pratt & Whitney [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	1,417	1,191	2,591	2,453
Pratt & Whitney [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	304	397	501	639
Pratt & Whitney [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	116	127	219	266
Pratt & Whitney [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	3,132	2,565	6,187	4,952
Pratt & Whitney [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,562	2,139	4,874	4,298
Pratt & Whitney [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	1,057	807	1,936	1,433
Pratt & Whitney [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	825	971	1,698	1,764
Pratt & Whitney [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	112	85	190	189
Pratt & Whitney [Member] | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	413	278	800	626
Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	3,570	3,805	7,142	7,570
Raytheon Intelligence & Space [Member] | Fixed-price Contract
Segment Reporting Information [Line Items]
Revenues	1,353	1,556	2,693	3,027
Raytheon Intelligence & Space [Member] | Cost-type Contract
Segment Reporting Information [Line Items]
Revenues	1,892	1,945	3,805	3,919
Raytheon Intelligence & Space [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	2,564	2,675	5,168	5,351
Raytheon Intelligence & Space [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	681	826	1,330	1,595
Raytheon Intelligence & Space [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	2,805	2,944	5,617	5,844
Raytheon Intelligence & Space [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	149	209	309	417
Raytheon Intelligence & Space [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	212	217	416	446
Raytheon Intelligence & Space [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	79	131	156	239
Raytheon Intelligence & Space [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,852	3,020	5,718	5,985
Raytheon Intelligence & Space [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	103	118	210	232
Raytheon Intelligence & Space [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	190	205	353	409
Raytheon Intelligence & Space [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	62	132	143	265
Raytheon Intelligence & Space [Member] | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	38	26	74	55
Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	3,558	3,985	7,085	7,778
Raytheon Missiles & Defense | Fixed-price Contract
Segment Reporting Information [Line Items]
Revenues	2,043	2,402	4,118	4,653
Raytheon Missiles & Defense | Cost-type Contract
Segment Reporting Information [Line Items]
Revenues	1,450	1,516	2,840	2,995
Raytheon Missiles & Defense | Product [Member]
Segment Reporting Information [Line Items]
Revenues	3,135	3,565	6,274	6,940
Raytheon Missiles & Defense | Service [Member]
Segment Reporting Information [Line Items]
Revenues	358	353	684	708
Raytheon Missiles & Defense | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	2,314	2,384	4,611	4,741
Raytheon Missiles & Defense | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	675	866	1,440	1,671
Raytheon Missiles & Defense | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	504	668	905	1,235
Raytheon Missiles & Defense | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	0	0	2	1
Raytheon Missiles & Defense | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,313	2,385	4,612	4,742
Raytheon Missiles & Defense | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	248	325	520	652
Raytheon Missiles & Defense | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	338	356	662	726
Raytheon Missiles & Defense | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	576	835	1,134	1,495
Raytheon Missiles & Defense | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	18	17	30	33
Other Segments
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Other Segments | Product [Member]
Segment Reporting Information [Line Items]
Revenues	0	8	4	16
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	0	4	4	11
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	4	0	5
Other Segments | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	0	4	4	11
Other Segments | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	0	4	0	5
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	17,108	16,615	33,560	32,573
Operating Segments | Collins Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	4,607	4,173	9,072	8,211
Operating Segments | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	4,969	4,280	9,498	8,310
Operating Segments | Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	3,245	3,501	6,498	6,946
Operating Segments | Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	3,493	3,918	6,958	7,648
Operating Segments | Other Segments
Segment Reporting Information [Line Items]
Revenues	0	8	4	16
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues	(794)	(735)	(1,530)	(1,442)
Intersegment Eliminations | Collins Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	404	372	763	704
Intersegment Eliminations | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	0	0	0	0
Intersegment Eliminations | Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	325	304	644	624
Intersegment Eliminations | Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	65	67	127	130
Intersegment Eliminations | Other Segments
Segment Reporting Information [Line Items]
Revenues	$ (794)	$ (743)	$ (1,534)	$ (1,458)