Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Statement of Comprehensive Income [Abstract]
Net (loss)/earnings	$ (641)	$ 2,149
Currency translation adjustments	(77)	1
Unrealized gain on certain investments, net of tax of $0 and $0		1
Unrealized (loss)/gain on derivative instruments [Abstract]
Unrealized (loss)/gain arising during period, net of tax of $77 and ($3)	(275)	11
Reclassification adjustment for losses/(gains) included in net earnings, net of tax of ($1) and $1	2	(2)
Total unrealized (loss)/gain on derivative instruments, net of tax	(273)	9
Defined benefit pension plans & other postretirement benefits [Abstract]
Amortization of prior service credits included in net periodic pension cost, net of tax of $6 and $6	(23)	(23)
Amortization of actuarial losses included in net periodic pension cost, net of tax of ($53) and ($32)	193	118
Pension and postretirement cost related to our equity method investments, net of tax of $0 and ($2)		8
Total defined benefit pension plans and other postretirement benefits, net of tax	170	103
Other comprehensive (loss)/income, net of tax	(180)	114
Comprehensive (loss)/income, net of tax	(821)	2,263
Less: Comprehensive loss related to noncontrolling interest	(13)
Comprehensive (loss)/income attributable to Boeing Shareholders, net of tax	$ (808)	$ 2,263