Postretirement Plans - Narrative (Details) - USD ($) $ in Millions	1 Months Ended	3 Months Ended	12 Months Ended
	Nov. 30, 2020	Dec. 31, 2020	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan Disclosure [Line Items]
Amount by which fair value of plan assets exceeds market-related value of plan assets (MRVA)			$ (10,131)
Derivative net notional amount for fixed income as percentage of total plan assets			37.10%	33.40%
Derivative net notional amount for global equity, currency overlay and commodities as a percentage of total plan assets			(5.60%)	(5.40%)
Company contribution	$ 3,000	$ 3,000
Defined contribution plan, cost			$ 1,260	$ 1,268	$ 1,351
Pension
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation (ABO) for all pension plans			54,481	74,199
Company contribution			2	11
Defined benefit plan, plan assets, amount		68,696	$ 49,825	$ 67,813	68,696
Defined benefit plan, actual plan asset allocations			100.00%	100.00%
Pension | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, actual plan asset allocations			63.00%	61.00%
Pension | Equity securities:
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, actual plan asset allocations			14.00%	16.00%
Pension | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount			$ 7,054	$ 10,851
Pension | Level 3
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount		240	268	198	240
Pension | Boeing company stock | Equity securities:
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount			1,782	1,883
Pension | Boeing company stock | Equity securities: | Level 1
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount			1,782	1,883
Pension | Corporate | Level 3 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets Level 3 reconciliation, increase (decrease) for actual return (loss) on plan assets still held			(16)
Pension | Mortgage backed and asset backed | Level 3 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets Level 3 reconciliation, increase (decrease) for actual return (loss) on plan assets still held			(11)	(1)
Pension | Municipal | Level 3 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets Level 3 reconciliation, increase (decrease) for actual return (loss) on plan assets still held			(14)
Pension | Real estate and real assets | Level 3 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets Level 3 reconciliation, increase (decrease) for actual return (loss) on plan assets still held			(1)
Pension | Sovereign | Level 3 | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets Level 3 reconciliation, increase (decrease) for actual return (loss) on plan assets still held				(8)
Other Postretirement Benefits
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, plan assets, amount		$ 160	$ 140	$ 172	$ 160
Other Postretirement Benefits | Fixed income
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, actual plan asset allocations			40.00%
Other Postretirement Benefits | Equity securities:
Defined Benefit Plan Disclosure [Line Items]
Defined benefit plan, actual plan asset allocations			60.00%