Condensed Consolidated Statements Of Equity - USD ($) $ in Millions	Total	Common Stock	Additional Paid-In Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Loss	Non-Controlling Interest
Balance at Jun. 30, 2020	$ (11,382)	$ 5,061	$ 6,648	$ (54,829)	$ 47,478	$ (16,025)	$ 285
Net loss attributable to Boeing Shareholders	(449)				(449)
Net Income (Loss) Attributable to Noncontrolling Interest	(17)						(17)
Net loss	(466)
Other Comprehensive Income (Loss), Tax	(79)
Other comprehensive income, net of tax	246					246
Share-based compensation and related dividend equivalents	50		50
Treasury shares issued for stock options exercised, net	4		(2)	6
Treasury shares issued for other share-based plans, net	(5)		(9)	4
Balance at Sep. 30, 2020	(11,553)	5,061	6,687	(54,819)	47,029	(15,779)	268
Balance at Dec. 31, 2020	(18,075)	5,061	7,787	(52,641)	38,610	(17,133)	241
Net loss attributable to Boeing Shareholders	(59)				(59)
Net Income (Loss) Attributable to Noncontrolling Interest	(67)						(67)
Net loss	(126)
Other Comprehensive Income (Loss), Tax	(298)
Other comprehensive income, net of tax	2,315					2,315
Share-based compensation and related dividend equivalents	677		677
Treasury shares issued for stock options exercised, net	36		(24)	60
Treasury shares issued for other share-based plans, net	(44)		(85)	41
Treasury shares issued for 401(k) contribution	951		441	510
Balance at Sep. 30, 2021	(14,266)	5,061	8,796	(52,030)	38,551	(14,818)	174
Balance at Jun. 30, 2021	(16,485)	5,061	8,481	(52,223)	38,660	(16,661)	197
Net loss attributable to Boeing Shareholders	(109)
Net Income (Loss) Attributable to Noncontrolling Interest	(23)						(23)
Net loss	(132)
Other Comprehensive Income (Loss), Tax	(167)
Other comprehensive income, net of tax	1,843					1,843
Share-based compensation and related dividend equivalents	184		184
Treasury shares issued for stock options exercised, net	7		(5)	12
Treasury shares issued for other share-based plans, net	(6)		(9)	3
Treasury shares issued for 401(k) contribution	323		145	178
Balance at Sep. 30, 2021	$ (14,266)	$ 5,061	$ 8,796	$ (52,030)	$ 38,551	$ (14,818)	$ 174