Segment Financial Data (Disaggregation of Revenue) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Segment Reporting Information [Line Items]
Revenues	$ 17,214	$ 15,716
Product [Member]
Segment Reporting Information [Line Items]
Revenues	12,787	11,862
Service [Member]
Segment Reporting Information [Line Items]
Revenues	4,427	3,854
U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	7,557	7,338
Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	1,262	1,176
Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	1,004	959
Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	7,391	6,243
UNITED STATES
Segment Reporting Information [Line Items]
Revenues	10,548	9,730
Europe [Member]
Segment Reporting Information [Line Items]
Revenues	2,990	2,572
Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	2,050	1,857
Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	763	829
Other [Member]
Segment Reporting Information [Line Items]
Revenues	863	728
Collins Aerospace [Member]
Segment Reporting Information [Line Items]
Revenues	5,581	4,824
Collins Aerospace [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	4,000	3,482
Collins Aerospace [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	1,163	983
Collins Aerospace [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	1,132	1,051
Collins Aerospace [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	53	54
Collins Aerospace [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	240	251
Collins Aerospace [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	3,738	3,109
Collins Aerospace [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,648	2,249
Collins Aerospace [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	1,458	1,314
Collins Aerospace [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	556	497
Collins Aerospace [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	156	112
Collins Aerospace [Member] | Other [Member]
Segment Reporting Information [Line Items]
Revenues	345	293
Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	5,230	4,529
Pratt & Whitney [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	3,052	2,633
Pratt & Whitney [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	2,177	1,896
Pratt & Whitney [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	1,222	1,174
Pratt & Whitney [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	332	197
Pratt & Whitney [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	118	103
Pratt & Whitney [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	3,557	3,055
Pratt & Whitney [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,631	2,312
Pratt & Whitney [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	1,120	879
Pratt & Whitney [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	905	873
Pratt & Whitney [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	110	78
Pratt & Whitney [Member] | Other [Member]
Segment Reporting Information [Line Items]
Revenues	463	387
Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	3,565	3,572
Raytheon Intelligence & Space [Member] | Fixed-price Contract
Segment Reporting Information [Line Items]
Revenues	1,387	1,340
Raytheon Intelligence & Space [Member] | Cost-type Contract
Segment Reporting Information [Line Items]
Revenues	1,807	1,913
Raytheon Intelligence & Space [Member] | Product [Member]
Segment Reporting Information [Line Items]
Revenues	2,510	2,604
Raytheon Intelligence & Space [Member] | Service [Member]
Segment Reporting Information [Line Items]
Revenues	684	649
Raytheon Intelligence & Space [Member] | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	2,742	2,812
Raytheon Intelligence & Space [Member] | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	161	160
Raytheon Intelligence & Space [Member] | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	201	204
Raytheon Intelligence & Space [Member] | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	90	77
Raytheon Intelligence & Space [Member] | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,806	2,866
Raytheon Intelligence & Space [Member] | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	108	107
Raytheon Intelligence & Space [Member] | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	213	163
Raytheon Intelligence & Space [Member] | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	36	81
Raytheon Intelligence & Space [Member] | Other [Member]
Segment Reporting Information [Line Items]
Revenues	31	36
Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	3,671	3,527
Raytheon Missiles & Defense | Fixed-price Contract
Segment Reporting Information [Line Items]
Revenues	2,095	2,075
Raytheon Missiles & Defense | Cost-type Contract
Segment Reporting Information [Line Items]
Revenues	1,529	1,390
Raytheon Missiles & Defense | Product [Member]
Segment Reporting Information [Line Items]
Revenues	3,221	3,139
Raytheon Missiles & Defense | Service [Member]
Segment Reporting Information [Line Items]
Revenues	403	326
Raytheon Missiles & Defense | U.S. Government Sales Excluding Foreign Military Sales Member
Segment Reporting Information [Line Items]
Revenues	2,457	2,297
Raytheon Missiles & Defense | Foreign Military Sales Through the U.S. Government Member
Segment Reporting Information [Line Items]
Revenues	716	765
Raytheon Missiles & Defense | Foreign Government Direct Commercial Sales Member
Segment Reporting Information [Line Items]
Revenues	445	401
Raytheon Missiles & Defense | Commercial Aerospace and Other Commercial Member
Segment Reporting Information [Line Items]
Revenues	6	2
Raytheon Missiles & Defense | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	2,459	2,299
Raytheon Missiles & Defense | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	304	272
Raytheon Missiles & Defense | Asia Pacific [Member]
Segment Reporting Information [Line Items]
Revenues	376	324
Raytheon Missiles & Defense | Middle East and North Africa Member
Segment Reporting Information [Line Items]
Revenues	461	558
Raytheon Missiles & Defense | Other [Member]
Segment Reporting Information [Line Items]
Revenues	24	12
Other Segments
Segment Reporting Information [Line Items]
Revenues	0	0
Other Segments | Product [Member]
Segment Reporting Information [Line Items]
Revenues	4	4
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	4
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	0
Other Segments | UNITED STATES
Segment Reporting Information [Line Items]
Revenues	4	4
Other Segments | Europe [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
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 | Other [Member]
Segment Reporting Information [Line Items]
Revenues	0	0
Operating Segments
Segment Reporting Information [Line Items]
Revenues	18,047	16,452
Operating Segments | Collins Aerospace [Member]
Segment Reporting Information [Line Items]
Revenues	5,163	4,465
Operating Segments | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	5,229	4,529
Operating Segments | Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	3,194	3,253
Operating Segments | Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	3,624	3,465
Operating Segments | Other Segments
Segment Reporting Information [Line Items]
Revenues	4	4
Intersegment Eliminations
Segment Reporting Information [Line Items]
Revenues	(833)	(736)
Intersegment Eliminations | Collins Aerospace [Member]
Segment Reporting Information [Line Items]
Revenues	418	359
Intersegment Eliminations | Pratt & Whitney [Member]
Segment Reporting Information [Line Items]
Revenues	1	0
Intersegment Eliminations | Raytheon Intelligence & Space [Member]
Segment Reporting Information [Line Items]
Revenues	371	319
Intersegment Eliminations | Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Revenues	47	62
Intersegment Eliminations | Other Segments
Segment Reporting Information [Line Items]
Revenues	$ (837)	$ (740)