Income Taxes (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended					6 Months Ended	12 Months Ended
	Apr. 30, 2020	Dec. 31, 2021	Sep. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Jun. 30, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Contingency [Line Items]
Undistributed Earnings of Foreign Subsidiaries		$ 15,000						$ 15,000
Income tax expense								786	$ 575	$ 421
Income from continuing operations before income taxes								(4,931)	2,353	(4,152)
Goodwill, Impairment Loss						$ 3,200		0	3,183	0
Net deferred tax charges resulting from the Separation Transactions and Raytheon Merger									416
Disposals of businesses								108	177	0
Foreign Derived Intangible Income (FDII)								121	83	138
Tax audit settlements					$ 25			0	0	290
U.S. research and development credit								172	142	101
Unrecognized Tax Benefits		1,458			1,225			1,458	1,225	1,347	$ 1,619
Unrecognized Tax Benefits that Would Impact Effective Tax Rate		1,313						1,313
Unrecognized Tax Benefits, Period Increase (Decrease)	$ 439							0	439	0
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	$ 165	165			$ 141			165	141	249
Tax Settlement Gain (Loss) Noncash										307
Effective Income Tax Rate Reconciliation, Change in U.K. Enacted Tax Rate, Amount								73	$ 8	0
Effective Income Tax Reconciliation, Reorganization, Amount			$ 244
Forcepoint [Member]
Income Tax Contingency [Line Items]
Disposals of businesses				$ 148
Raytheon Intelligence & Space global training and services business
Income Tax Contingency [Line Items]
Disposals of businesses		(104)
IRS audit of 2014, 2015 and 2016 tax years | Interest Income [Member]
Income Tax Contingency [Line Items]
Tax Settlement Gain (Loss) Noncash										56
Minimum [Member]
Income Tax Contingency [Line Items]
Decrease in Unrecognized Tax Benefits is Reasonably Possible		100						100
Maximum [Member]
Income Tax Contingency [Line Items]
Decrease in Unrecognized Tax Benefits is Reasonably Possible		$ 500						$ 500
Forecast [Member] | Minimum [Member]
Income Tax Contingency [Line Items]
Tax audit settlements							$ 20
Forecast [Member] | Maximum [Member]
Income Tax Contingency [Line Items]
Tax audit settlements							$ 100
Discontinued Operations [Member]
Income Tax Contingency [Line Items]
Unrecognized Tax Benefits										437
Unrecognized Tax Benefits, Interest on Income Taxes Accrued										$ 155