Inventories - Narrative (Details) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Dec. 31, 2023
Early Issue Sales Consideration
Inventory [Line Items]
Inventory subject to uncertainty	$ 4,546		$ 4,126
Airplane Program 737
Inventory [Line Items]
Amount of deferred costs related to commercial aircraft programs	7,638		6,011
Unamortized tooling and other non-recurring costs	880		792
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	8,480
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	38
Airplane Program 777x
Inventory [Line Items]
Amount of deferred costs related to commercial aircraft programs	2,612		1,792
Unamortized tooling and other non-recurring costs	4,218		4,063
Inventory, work in process	6,072		4,638
Abnormal production costs		$ 262
Airplane Program 787
Inventory [Line Items]
Amount of deferred costs related to commercial aircraft programs	12,336		12,384
Unamortized tooling and other non-recurring costs	1,441		1,480
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	11,618
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	2,159
Abnormal production costs	157	$ 693
Supplier advances	$ 1,563		$ 1,764