Inventories - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Sep. 30, 2023	Dec. 31, 2023
Inventory [Line Items]
777X and 767 reach-forward losses		$ 3,006
Early Issue Sales Consideration
Inventory [Line Items]
Inventory subject to uncertainty	$ 4,716	4,716		$ 4,126
Airplane Program 737
Inventory [Line Items]
Amount of deferred costs related to commercial aircraft programs	8,670	8,670		6,011
Unamortized tooling and other non-recurring costs	879	879		792
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	9,505	9,505
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	44	44
Airplane Program 777x
Inventory [Line Items]
Amount of deferred costs related to commercial aircraft programs	552	552		1,792
Unamortized tooling and other non-recurring costs	4,255	4,255		4,063
Inventory, work in process	3,818	3,818		4,638
Abnormal production costs		0	442
777X and 767 reach-forward losses	2,608
Airplane Program 787
Inventory [Line Items]
Amount of deferred costs related to commercial aircraft programs	12,452	12,452		12,384
Unamortized tooling and other non-recurring costs	1,402	1,402		1,480
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	11,403	11,403
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	2,451	2,451
Abnormal production costs		209	$ 937
Supplier advances	$ 1,394	$ 1,394		$ 1,764