Condensed Consolidated Statements Of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Statement of Comprehensive Income [Abstract]
Net loss	$ (2,395)	$ (2,942)	$ (3,036)	$ (793)
Currency translation adjustments	44	(3)	(33)	(2)
Unrealized gain on certain investments, net of tax of $0 in all periods				1
Unrealized (loss)/gain on derivative instruments [Abstract]
Unrealized (loss)/gain arising during period, net of tax of $54, $5, ($23) and $8	89	(28)	(186)	(17)
Reclassification adjustment for losses/(gains) included in net loss, net of tax of ($4), $1, ($3) and $0	10	(1)	12	(3)
Total unrealized (loss)/gain on derivative instruments, net of tax	99	(29)	(174)	(20)
Defined benefit pension plans & other postretirement benefits [Abstract]
Amortization of prior service credits included in net periodic pension cost, net of tax of $12, $13, $6 and $7	(22)	(22)	(45)	(45)
Net actuarial loss arising during the period, net of tax of $3, $0, $3 and $0	(12)		(12)
Amortization of actuarial losses included in net periodic pension cost, net of tax of ($103), ($65), ($50) and ($33)	197	115	390	233
Settlements and curtailments included in net loss, net of tax of ($1), $0, ($1) and $0	2		2
Pension and postretirement cost related to our equity method investments, net of tax of $0, ($2), $0, and $0				8
Total defined benefit pension plans and other postretirement benefits, net of tax	165	93	335	196
Other comprehensive income, net of tax	308	61	128	175
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	(19)	(7)	(32)	(7)
Comprehensive loss, net of tax	(2,087)	(2,888)	(2,908)	(625)
Comprehensive loss attributable to Boeing Shareholders, net of tax	$ (2,068)	$ (2,881)	$ (2,876)	$ (618)