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Inventories - Narrative (Details) - USD ($) $ in Millions | 6 Months Ended |
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Dec. 31, 2024
Early Issue Sales Consideration |  |  |
Inventory [Line Items] |  |  |
Inventory subject to uncertainty | $ 6,245 |  | $ 5,837
Airplane Program 737 |  |  |
Inventory [Line Items] |  |  |
Amount of deferred costs related to commercial aircraft programs | 11,001 |  | 9,679
Unamortized tooling and other non-recurring costs | 867 |  | 909
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date | 11,831 |  |
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders | 37 |  |
Airplane Program 777x |  |  |
Inventory [Line Items] |  |  |
Amount of deferred costs related to commercial aircraft programs | 1,072 |  | 0
Unamortized tooling and other non-recurring costs | 4,318 |  | 4,122
Inventory, work in process | 4,883 |  | 3,476
Airplane Program 787 |  |  |
Inventory [Line Items] |  |  |
Amount of deferred costs related to commercial aircraft programs | 13,320 |  | 13,178
Unamortized tooling and other non-recurring costs | 1,310 |  | 1,370
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from firm orders at the balance sheet date | 12,248 |  |
Deferred production, unamortized tooling and other nonrecurring costs to be recovered from future orders | 2,382 |  |
Supplier advances | 1,277 |  | $ 1,379
Abnormal production costs | $ 30 | $ 157 |

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