Segment Financial Data (Disaggregation of Revenue) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Revenues	$ 15,716	$ 15,251
Product [Member]
Segment Reporting Information [Line Items]
Revenues	11,862	11,664
Service [Member]
Segment Reporting Information [Line Items]
Revenues	3,854	3,587
U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	7,338	7,748
Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	1,176	1,295
Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	959	1,180
Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	6,243	5,028
UNITED STATES
Segment Reporting Information [Line Items]
Revenues	9,730	9,730
Europe [Member]
Segment Reporting Information [Line Items]
Revenues	2,572	2,147
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	1,857	1,772
Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	829	992
Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	728	610
Collins Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	4,824	4,370
Collins Aerospace Systems [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	3,482	3,182
Collins Aerospace Systems [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	983	856
Collins Aerospace Systems [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	1,051	1,222
Collins Aerospace Systems [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	54	40
Collins Aerospace Systems [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	251	245
Collins Aerospace Systems [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	3,109	2,531
Collins Aerospace Systems [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,249	2,242
Collins Aerospace Systems [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	1,314	1,079
Collins Aerospace Systems [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	497	405
Collins Aerospace Systems [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	112	95
Collins Aerospace Systems [Member] | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	293	217
Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	4,529	4,030
Pratt & Whitney [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	2,633	2,423
Pratt & Whitney [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	1,896	1,607
Pratt & Whitney [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	1,174	1,262
Pratt & Whitney [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	197	242
Pratt & Whitney [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	103	139
Pratt & Whitney [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	3,055	2,387
Pratt & Whitney [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,312	2,159
Pratt & Whitney [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	879	626
Pratt & Whitney [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	873	793
Pratt & Whitney [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	78	104
Pratt & Whitney [Member] | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	387	348
Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	3,572	3,765
Raytheon Intelligence & Space [Member] | Fixed-price Contract
Segment Reporting Information [Line Items]
Revenues	1,340	1,471
Raytheon Intelligence & Space [Member] | Cost-type Contract
Segment Reporting Information [Line Items]
Revenues	1,913	1,974
Raytheon Intelligence & Space [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	2,604	2,676
Raytheon Intelligence & Space [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	649	769
Raytheon Intelligence & Space [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	2,812	2,900
Raytheon Intelligence & Space [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	160	208
Raytheon Intelligence & Space [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	204	229
Raytheon Intelligence & Space [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	77	108
Raytheon Intelligence & Space [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,866	2,965
Raytheon Intelligence & Space [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	107	114
Raytheon Intelligence & Space [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	163	204
Raytheon Intelligence & Space [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	81	133
Raytheon Intelligence & Space [Member] | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	36	29
Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	3,527	3,793
Raytheon Missiles & Defense | Fixed-price Contract
Segment Reporting Information [Line Items]
Revenues	2,075	2,251
Raytheon Missiles & Defense | Cost-type Contract
Segment Reporting Information [Line Items]
Revenues	1,390	1,479
Raytheon Missiles & Defense | Product [Member]
Segment Reporting Information [Line Items]
Revenues	3,139	3,375
Raytheon Missiles & Defense | Service [Member]
Segment Reporting Information [Line Items]
Revenues	326	355
Raytheon Missiles & Defense | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	2,297	2,357
Raytheon Missiles & Defense | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	765	805
Raytheon Missiles & Defense | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	401	567
Raytheon Missiles & Defense | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	2	1
Raytheon Missiles & Defense | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,299	2,357
Raytheon Missiles & Defense | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	272	327
Raytheon Missiles & Defense | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	324	370
Raytheon Missiles & Defense | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	558	660
Raytheon Missiles & Defense | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	12	16
Other Segments
Segment Reporting Information [Line Items]
Revenues	0	0
Other Segments | Product [Member]
Segment Reporting Information [Line Items]
Revenues	4	8
Other Segments | Service [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
Other Segments | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	4	7
Other Segments | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	0	0
Other Segments | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	0	0
Other Segments | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	0	1
Other Segments | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	4	7
Other Segments | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	0	1
Other Segments | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
Other Segments | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	0	0
Other Segments | Canada and All Other [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
Operating Segments
Segment Reporting Information [Line Items]
Revenues	16,452	15,958
Operating Segments | Collins Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	4,465	4,038
Operating Segments | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	4,529	4,030
Operating Segments | Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	3,253	3,445
Operating Segments | Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	3,465	3,730
Operating Segments | Other Segments
Segment Reporting Information [Line Items]
Revenues	4	8
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues	(736)	(707)
Intersegment Eliminations | Collins Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Revenues	359	332
Intersegment Eliminations | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
Intersegment Eliminations | Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	319	320
Intersegment Eliminations | Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	62	63
Intersegment Eliminations | Other Segments
Segment Reporting Information [Line Items]
Revenues	$ (740)	$ (715)