Segment Financial Data (Segment Information) (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Jun. 30, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Net sales		$ 64,388	$ 56,587	$ 45,349
Operating Income (Loss)		$ 4,958	$ (1,889)	$ 4,914
Operating Profit Margin		7.70%	(3.30%)	10.80%
Goodwill, Impairment Loss	$ 3,200	$ 0	$ 3,183	$ 0
Total Assets		161,404	162,153
Capital Expenditures		2,134	1,795	1,868
Depreciation & Amortization		4,557	4,156	2,708
Operating Segments
Segment Reporting Information [Line Items]
Net sales		67,318	58,552	46,930
Operating Income (Loss)		$ 6,050	$ 2,802	$ 6,309
Operating Profit Margin		9.00%	4.80%	13.40%
Total Assets		$ 151,289	$ 152,391
Capital Expenditures		1,957	1,701	$ 1,781
Depreciation & Amortization		1,890	1,847	1,309
Intersegment Eliminations
Segment Reporting Information [Line Items]
Net sales		(2,930)	(1,965)	(1,581)
Operating Income (Loss)		(133)	(107)	(140)
Corporate, Non-Segment
Segment Reporting Information [Line Items]
Net sales		0	0	0
Operating Income (Loss)		(552)	(590)	(367)
Total Assets		10,115	9,762
Capital Expenditures		177	94	87
Depreciation & Amortization		152	155	165
Collins Aerospace Systems [Member]
Segment Reporting Information [Line Items]
Net sales		18,449	19,288	26,028
Operating Income (Loss)		$ 1,759	$ 1,466	$ 4,508
Operating Profit Margin		9.50%	7.60%	17.30%
Goodwill, Impairment Loss	$ 3,200		$ 3,200
Total Assets		$ 67,564	68,701
Capital Expenditures		665	638	$ 959
Depreciation & Amortization		728	736	695
Collins Aerospace Systems [Member] | Operating Segments
Segment Reporting Information [Line Items]
Net sales		16,990	17,910	24,431
Collins Aerospace Systems [Member] | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net sales		1,459	1,378	1,597
Pratt and Whitney [Member]
Segment Reporting Information [Line Items]
Net sales		18,150	16,799	20,902
Operating Income (Loss)		$ 454	$ (564)	$ 1,801
Operating Profit Margin		2.50%	(3.40%)	8.60%
Total Assets		$ 33,414	$ 32,780
Capital Expenditures		700	565	$ 822
Depreciation & Amortization		642	729	614
Pratt and Whitney [Member] | Operating Segments
Segment Reporting Information [Line Items]
Net sales		18,150	16,790	20,905
Pratt and Whitney [Member] | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net sales		0	9	(3)
Raytheon Intelligence & Space
Segment Reporting Information [Line Items]
Net sales		15,180	11,069	0
Operating Income (Loss)		$ 1,833	$ 1,020	$ 0
Operating Profit Margin		12.10%	9.20%	0.00%
Total Assets		$ 21,545	$ 21,573
Capital Expenditures		305	218	$ 0
Depreciation & Amortization		187	154	0
Raytheon Intelligence & Space | Operating Segments
Segment Reporting Information [Line Items]
Net sales		13,944	10,141	0
Raytheon Intelligence & Space | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net sales		1,236	928	0
Raytheon Missiles & Defense
Segment Reporting Information [Line Items]
Net sales		15,539	11,396	0
Operating Income (Loss)		$ 2,004	$ 880	$ 0
Operating Profit Margin		12.90%	7.70%	0.00%
Total Assets		$ 28,766	$ 29,337
Capital Expenditures		287	280	$ 0
Depreciation & Amortization		333	228	0
Raytheon Missiles & Defense | Operating Segments
Segment Reporting Information [Line Items]
Net sales		15,289	11,219	0
Raytheon Missiles & Defense | Intersegment Eliminations
Segment Reporting Information [Line Items]
Net sales		250	177	0
FAS/CAS Operating Adjustment
Segment Reporting Information [Line Items]
Net sales		0	0	0
Operating Income (Loss)		1,796	1,106	0
Acquisition Accounting Adjustments
Segment Reporting Information [Line Items]
Net sales		0	0	0
Operating Income (Loss)		(2,203)	(5,100)	(888)
Depreciation & Amortization		$ 2,515	$ 2,154	$ 1,234