Segment Financial Data (Disaggregation of Revenue) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 68,920	$ 67,074	$ 64,388
Other | Powder Metal Matter
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ (5,401)
Airbus [Member]
Revenue from External Customer [Line Items]
Percentage of Total Net Sales	17.00%	14.00%	12.00%
Operating Segments | U S Government Sales Excluding Foreign Military Sales
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 31,628	$ 30,317	$ 31,177
Operating Segments | Foreign Military Sales Through The U S Government
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,974	5,042	5,546
Operating Segments | Foreign Government Direct Commercial Sales
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,249	4,327	4,993
Operating Segments | Commercial Aerospace And Other Commercial
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	28,069	27,388	22,672
Intersegment Eliminations
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(1,979)	(1,684)	(1,525)
UNITED STATES | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	44,881	41,190	40,011
Europe [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	13,501	11,111	9,598
Asia Pacific [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	9,049	8,057	7,969
Middle East And North Africa | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,237	3,599	4,379
Other Geographic Regions [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,653	3,117	2,431
Products [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	49,571	50,773	49,270
Services [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	19,349	16,301	15,118
Collins Aerospace Systems [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	24,294	21,330	19,613
Collins Aerospace Systems [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	26,253	23,052	21,152
Collins Aerospace Systems [Member] | Operating Segments | U S Government Sales Excluding Foreign Military Sales
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	6,357	6,484	7,016
Collins Aerospace Systems [Member] | Operating Segments | Foreign Military Sales Through The U S Government
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	304	372	309
Collins Aerospace Systems [Member] | Operating Segments | Foreign Government Direct Commercial Sales
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,110	1,063	1,223
Collins Aerospace Systems [Member] | Operating Segments | Commercial Aerospace And Other Commercial
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	16,523	13,411	11,065
Collins Aerospace Systems [Member] | Intersegment Eliminations
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,959	1,722	1,539
Collins Aerospace Systems [Member] | UNITED STATES | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	13,185	11,944	11,669
Collins Aerospace Systems [Member] | Europe [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	6,423	5,455	4,488
Collins Aerospace Systems [Member] | Asia Pacific [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,625	2,165	2,040
Collins Aerospace Systems [Member] | Middle East And North Africa | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	684	510	483
Collins Aerospace Systems [Member] | Other Geographic Regions [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,377	1,256	933
Collins Aerospace Systems [Member] | Products [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	19,034	16,917	15,648
Collins Aerospace Systems [Member] | Services [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	5,260	4,413	3,965
Pratt and Whitney [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	18,296	20,527	18,150
Pratt and Whitney [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	18,296	20,530	18,150
Pratt and Whitney [Member] | Operating Segments | Other | Powder Metal Matter
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(5,401)
Pratt and Whitney [Member] | Operating Segments | U S Government Sales Excluding Foreign Military Sales
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	5,206	5,272	5,140
Pratt and Whitney [Member] | Operating Segments | Foreign Military Sales Through The U S Government
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,442	1,115	1,273
Pratt and Whitney [Member] | Operating Segments | Foreign Government Direct Commercial Sales
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	515	474	541
Pratt and Whitney [Member] | Operating Segments | Commercial Aerospace And Other Commercial
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	11,133	13,666	11,196
Pratt and Whitney [Member] | Intersegment Eliminations
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	3	0
Pratt and Whitney [Member] | UNITED STATES | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	11,403	10,433	9,034
Pratt and Whitney [Member] | Europe [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	5,433	4,211	3,488
Pratt and Whitney [Member] | Asia Pacific [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,227	3,775	3,885
Pratt and Whitney [Member] | Middle East And North Africa | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	539	450	441
Pratt and Whitney [Member] | Other Geographic Regions [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,095	1,658	1,302
Pratt and Whitney [Member] | Products [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	8,579	12,411	11,189
Pratt and Whitney [Member] | Services [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	9,717	8,116	6,961
Raytheon
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	26,220	25,043	26,452
Raytheon | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	26,350	25,176	26,611
Raytheon | Operating Segments | Other | Powder Metal Matter
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0
Raytheon | Operating Segments | Fixed-price Contract
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	13,164	12,910	14,270
Raytheon | Operating Segments | Time-and-materials Contract
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	13,056	12,133	12,182
Raytheon | Operating Segments | U S Government Sales Excluding Foreign Military Sales
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	19,965	18,394	18,854
Raytheon | Operating Segments | Foreign Military Sales Through The U S Government
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3,228	3,555	3,963
Raytheon | Operating Segments | Foreign Government Direct Commercial Sales
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,620	2,786	3,227
Raytheon | Operating Segments | Commercial Aerospace And Other Commercial
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	407	308	408
Raytheon | Intersegment Eliminations
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	130	133	159
Raytheon | UNITED STATES | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	20,187	18,643	19,139
Raytheon | Europe [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1,642	1,442	1,619
Raytheon | Asia Pacific [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,196	2,116	2,043
Raytheon | Middle East And North Africa | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	2,014	2,639	3,455
Raytheon | Other Geographic Regions [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	181	203	196
Raytheon | Products [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	21,847	21,276	22,264
Raytheon | Services [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4,373	3,767	4,188
Other Segments [Member]
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	110	174	173
Other Segments [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0
Other Segments [Member] | Operating Segments | Other | Powder Metal Matter
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0
Other Segments [Member] | Operating Segments | U S Government Sales Excluding Foreign Military Sales
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	100	167	167
Other Segments [Member] | Operating Segments | Foreign Military Sales Through The U S Government
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	1
Other Segments [Member] | Operating Segments | Foreign Government Direct Commercial Sales
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	4	4	2
Other Segments [Member] | Operating Segments | Commercial Aerospace And Other Commercial
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	6	3	3
Other Segments [Member] | Intersegment Eliminations
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(2,089)	(1,858)	(1,698)
Other Segments [Member] | UNITED STATES | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	106	170	169
Other Segments [Member] | Europe [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	3	3	3
Other Segments [Member] | Asia Pacific [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	1	1	1
Other Segments [Member] | Middle East And North Africa | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0
Other Segments [Member] | Other Geographic Regions [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	0	0	0
Other Segments [Member] | Products [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	111	169	169
Other Segments [Member] | Services [Member] | Operating Segments
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	(1)	$ 5	$ 4
Collins Aerospace | Operating Segments | Other | Powder Metal Matter
Revenue from External Customer [Line Items]
Revenue from Contract with Customer, Excluding Assessed Tax	$ 0