Inventories - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Early Issue Sales Consideration
Inventory [Line Items]
Inventory subject to uncertainty	$ 4,558		$ 4,126
Airplane Program 737
Inventory [Line Items]
Deferred production costs	6,794		6,011
Unamortized tooling and other non-recurring costs	872		792
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	7,635
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	31
Airplane Program 777x
Inventory [Line Items]
Deferred production costs	2,160		1,792
Unamortized tooling and other non-recurring costs	4,139		4,063
Inventory, work in process	5,337		4,638
Abnormal production costs		$ 126
Airplane Program 787
Inventory [Line Items]
Deferred production costs	12,107		12,384
Unamortized tooling and other non-recurring costs	1,443		1,480
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date	11,601
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders	1,949
Abnormal production costs	80	$ 379
Supplier advances	$ 1,606		$ 1,764