Consolidated Statements Of Equity - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-In Capital [Member]	Treasury Stock [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Loss [Member]	Non-Controlling Interest [Member]	Less: Noncontrolling Interest not presented on Income Statement [Member]
Beginning Balance at Dec. 31, 2017	$ 1,713	$ 5,061	$ 6,804	$ (43,454)	$ 49,618	$ (16,373)	$ 57
Net (loss)/earnings attributable to Boeing Shareholders	10,460				10,460
Net Income (Loss) Attributable to Noncontrolling Interest
Net (loss)/earnings	10,460						(21)	$ 10,439
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	1,290					1,290
Share-based compensation and related dividend equivalents	202		238		(36)
Treasury shares issued for stock options exercised, net	(81)		(45)	(126)
Treasury shares issued for other share-based plans, net	(249)		(229)	(20)
Common shares repurchased	(9,000)			(9,000)
Dividends, Common Stock, Cash	(4,101)				(4,101)
Changes in noncontrolling interests	35						35
Ending Balance at Dec. 31, 2018	410	5,061	6,768	(52,348)	55,941	(15,083)	71
Other Comprehensive Income (Loss), Tax	$ 379
Cash dividends declared, per share	$ 7.19
Net (loss)/earnings attributable to Boeing Shareholders	$ (636)				(636)
Net Income (Loss) Attributable to Noncontrolling Interest
Net (loss)/earnings	(636)						(41)	(677)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(1,070)					(1,070)
Share-based compensation and related dividend equivalents	212		245		(33)
Treasury shares issued for stock options exercised, net	(57)		(47)	(104)
Treasury shares issued for other share-based plans, net	(240)		(221)	(19)
Common shares repurchased	(2,651)			(2,651)
Dividends, Common Stock, Cash	(4,628)				(4,628)
Changes in noncontrolling interests	287						287
Ending Balance at Dec. 31, 2019	(8,300)	5,061	6,745	(54,914)	50,644	(16,153)	317
Other Comprehensive Income (Loss), Tax	$ (298)
Cash dividends declared, per share	$ 8.22
Net (loss)/earnings attributable to Boeing Shareholders	$ (11,873)
Net Income (Loss) Attributable to Noncontrolling Interest	(68)						(68)
Net (loss)/earnings	(11,941)							$ (11,941)
Other Comprehensive Income (Loss), Net of Tax, Portion Attributable to Parent	(980)					(980)
Share-based compensation and related dividend equivalents	250		250
Treasury shares issued for stock options exercised, net	(37)		(26)	(63)
Treasury shares issued for other share-based plans, net	(167)		(214)	47
Treasury shares contributed to pension plans	3,000		952	2,048
Treasury shares issued for 401(k) contribution	195		80	115
Changes in noncontrolling interests	(8)						(8)
Other	1				1
Ending Balance at Dec. 31, 2020	(18,075)	$ 5,061	$ 7,787	$ (52,641)	$ 38,610	$ (17,133)	$ 241
Other Comprehensive Income (Loss), Tax	$ (52)