Inventories - Narrative (Details) $ in Millions	9 Months Ended
	Sep. 30, 2023 USD ($) aircraft	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) aircraft
Early Issue Sales Consideration
Inventory [Line Items]
Inventory subject to uncertainty	$ 3,862		$ 3,586
Airplane Program 737
Inventory [Line Items]
Number of commercial aircraft program | aircraft	250		250
Deferred production costs	$ 5,359		$ 2,955
Unamortized tooling and other non-recurring costs	574		$ 626
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	5,899
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	$ 34
Airplane Program 787
Inventory [Line Items]
Number of commercial aircraft program | aircraft	75		100
Deferred production costs	$ 12,188		$ 12,689
Unamortized tooling and other non-recurring costs	1,531		1,722
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	13,024
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	695
Abnormal production costs	937	$ 925
Supplier advances	1,734		1,831
Airplane Program 777x
Inventory [Line Items]
Deferred production costs	1,370		1,330
Unamortized tooling and other non-recurring costs	3,956		$ 3,774
Abnormal production costs	$ 442	$ 213