Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net loss	$ (2,242)	$ (5,053)	$ (4,290)
Other comprehensive (loss)/income, net of tax:
Currency translation adjustments	33	(62)	(75)
Unrealized gain/(loss) on certain investments, net of tax of $0, $0 and $0	2	(1)
Derivative instruments:
Unrealized gain/(loss) arising during period, net of tax of ($11), $12 and ($16)	41	(40)	55
Reclassification adjustment for (gain)/loss included in net loss, net of tax of $1, ($3) and $2	(5)	10	(6)
Total unrealized gain/(loss) on derivative instruments, net of tax	36	(30)	49
Defined benefit pension plans & other postretirement benefits:
Net actuarial (loss)/gain arising during the period, net of tax of $13, ($22) and ($32)	(722)	1,533	4,262
Amortization of actuarial (gain)/loss included in net periodic pension cost, net of tax of $0, ($11) and ($8)	(2)	791	1,155
Settlement (gain)/loss included in net periodic cost, net of tax of $0, $0 and ($2)		(4)	191
Amortization of prior service credits included in net periodic pension cost, net of tax of $1, $2 and $1	(102)	(114)	(114)
Prior service credit arising during the period, net of tax of $0, $0 and $0		(1)
Pension and postretirement (cost)/benefit related to our equity method investments, net of tax of $0, $0 and ($2)		(3)	6
Total defined benefit pension plans & other postretirement benefits, net of tax	(826)	2,202	5,500
Other comprehensive (loss)/income, net of tax	(755)	2,109	5,474
Comprehensive (loss)/income, net of tax	(2,997)	(2,944)	1,184
Comprehensive loss related to noncontrolling interests	(20)	(118)	(88)
Comprehensive (loss)/income attributable to Boeing Shareholders, net of tax	$ (2,977)	$ (2,826)	$ 1,272