Consolidated Statement of Changes in Equity - USD ($) shares in Thousands, $ in Millions	Total	Raytheon Company [Member]	Common Stock [Member]	Common Stock [Member] Raytheon Company [Member]	Treasury Stock [Member]	Treasury Stock [Member] Raytheon Company [Member]	Retained Earnings [Member]	Unearned ESOP Shares [Member]	Accumulated Other Comprehensive (Loss) Income [Member]	Noncontrolling Interest
Increase (Decrease) In Equity [Roll Forward]
Stockholders' Equity Attributable to Parent			$ 22,514		$ (32,482)		$ 57,823	$ (76)	$ (9,333)
Noncontrolling interest										$ 2,164
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 40,610
Common Stock plans activity			525		7			12
Stock Issued During Period, Value, Acquisitions				$ 0		$ 0
Separation of Carrier and Otis			0				0		0	0
Purchase of subsidiary shares from noncontrolling interest, net			(20)
Common Stock repurchased					(151)
Net Income - Retained Earnings	5,537						5,537
Dividends on Common Stock							(2,442)
Dividends on ESOP Common Stock							(70)
Reclassification from OCI, current period, ASU 2018-02 adoption impact	$ (745)						745		(745)
Other					0		1
Other comprehensive income (loss), net of tax - AOCI									(71)
Net income										411
Redeemable Noncontrolling Interest in subsidiaries' earnings										7
Other comprehensive income (loss), net of tax - NCI										(12)
Dividends attributable to noncontrolling interest										(268)
Sale of subsidiary shares from noncontrolling interest, net										70
Acquisition (disposition) of noncontrolling interest, net										(23)
Capital contributions (distributions)										108
Shares of Common Stock issued under employee plans, net	3,883
Shares of Common Stock repurchased	1,133
Shares of Common Stock issued for Raytheon Company outstanding common stock and equity awards		0
Dividends Per Share of Common Stock	$ 2.940
Stockholders' Equity Attributable to Parent			23,019		(32,626)		61,594	(64)	(10,149)
Noncontrolling interest										2,457
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 44,231
Common Stock plans activity			417		2			15
Stock Issued During Period, Value, Acquisitions				10,897		22,269
Separation of Carrier and Otis			2,598				(5,805)		3,875	(865)
Purchase of subsidiary shares from noncontrolling interest, net			(1)
Common Stock repurchased					(43)
Net Income - Retained Earnings	$ (3,519)						(3,519)
Dividends on Common Stock							(2,732)
Dividends on ESOP Common Stock							(50)
Reclassification from OCI, current period, ASU 2018-02 adoption impact							0		0
Other					(9)		(65)
Other comprehensive income (loss), net of tax - AOCI									2,540
Net income										224
Redeemable Noncontrolling Interest in subsidiaries' earnings										(4)
Other comprehensive income (loss), net of tax - NCI										0
Dividends attributable to noncontrolling interest										(159)
Sale of subsidiary shares from noncontrolling interest, net										66
Acquisition (disposition) of noncontrolling interest, net										1
Capital contributions (distributions)										(31)
Shares of Common Stock issued under employee plans, net	2,689
Shares of Common Stock repurchased	330
Shares of Common Stock issued for Raytheon Company outstanding common stock and equity awards		652,638
Dividends Per Share of Common Stock	$ 2.160
Stockholders' Equity Attributable to Parent	$ 72,163		36,930		(10,407)		49,423	(49)	(3,734)
Noncontrolling interest	1,689									1,689
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	73,852
Common Stock plans activity			553		0			11
Stock Issued During Period, Value, Acquisitions				$ 0		$ 0
Separation of Carrier and Otis			0				0		0	0
Purchase of subsidiary shares from noncontrolling interest, net			0
Common Stock repurchased					(2,331)
Net Income - Retained Earnings	$ 3,864						3,864
Dividends on Common Stock							(2,957)
Dividends on ESOP Common Stock							(50)
Reclassification from OCI, current period, ASU 2018-02 adoption impact							0		0
Other					11		(15)
Other comprehensive income (loss), net of tax - AOCI									1,819
Net income										248
Redeemable Noncontrolling Interest in subsidiaries' earnings										(8)
Other comprehensive income (loss), net of tax - NCI										0
Dividends attributable to noncontrolling interest										(332)
Sale of subsidiary shares from noncontrolling interest, net										0
Acquisition (disposition) of noncontrolling interest, net										(1)
Capital contributions (distributions)										0
Shares of Common Stock issued under employee plans, net	1,893
Shares of Common Stock repurchased	28,052
Shares of Common Stock issued for Raytheon Company outstanding common stock and equity awards		0
Dividends Per Share of Common Stock	$ 2.005
Stockholders' Equity Attributable to Parent	$ 73,068		$ 37,483		$ (12,727)		$ 50,265	$ (38)	$ (1,915)
Noncontrolling interest	1,596									$ 1,596
Stockholders' Equity, Including Portion Attributable to Noncontrolling Interest	$ 74,664