v3.26.3
Inventories - Narrative (Details) - USD ($)
$ in Millions
Sep. 30, 2026
Dec. 31, 2025
Early Issue Sales Consideration    
Inventory [Line Items]    
Inventory subject to uncertainty $ 6,877 $ 6,412
Airplane Program 737    
Inventory [Line Items]    
Amount of deferred costs related to commercial aircraft programs 14,036 11,777
Unamortized tooling and other non-recurring costs 724 750
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date 14,760  
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders 0  
Airplane Program 777x    
Inventory [Line Items]    
Amount of deferred costs related to commercial aircraft programs 2,731 651
Unamortized tooling and other non-recurring costs 2,177 1,816
Inventory, work in process 7,608 4,313
Airplane Program 787    
Inventory [Line Items]    
Amount of deferred costs related to commercial aircraft programs 14,444 13,859
Unamortized tooling and other non-recurring costs 1,303 1,366
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date 13,873  
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders 1,874  
Supplier advances $ 915 $ 932