Inventories - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Dec. 31, 2024
Early Issue Sales Consideration
Inventory [Line Items]
Inventory subject to uncertainty	$ 5,953		$ 5,837
Airplane Program 737
Inventory [Line Items]
Amount of deferred costs related to commercial aircraft programs	10,748		9,679
Unamortized tooling and other non-recurring costs	891		909
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	11,587
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	52
Airplane Program 777x
Inventory [Line Items]
Amount of deferred costs related to commercial aircraft programs	360		0
Unamortized tooling and other non-recurring costs	4,209		4,122
Inventory, work in process	4,145		3,476
Airplane Program 787
Inventory [Line Items]
Amount of deferred costs related to commercial aircraft programs	13,452		13,178
Unamortized tooling and other non-recurring costs	1,361		1,370
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	11,902
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	2,911
Supplier advances	1,550		$ 1,379
Abnormal production costs	$ 30	$ 80