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Basis of Presentation - Narrative (Details) - USD ($) $ in Millions |  |  | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Oct. 14, 2024 | May 15, 2024 | Sep. 30, 2024 | Sep. 30, 2023 | Oct. 11, 2024 | May 01, 2024 | Dec. 31, 2023
Basis of Presentation Disclosure [Line Items] |  |  |  |  |  |  |
Net cash provided by (used in) operating activities |  |  | $ (8,630) | $ 2,579 |  |  |
Cash, cash equivalents, and short-term investments |  |  | 10,500 |  |  |  |
Debt and lease obligation |  |  | $ 57,700 |  |  |  | $ 52,300
Line of credit facility, expiration period |  |  | 5 years |  |  |  |
Supplier finance program, obligation |  |  | $ 2,700 |  |  |  | 2,900
Goodwill |  |  | 8,112 |  |  |  | $ 8,093
Military Aircraft | Defense, Space & Security |  |  |  |  |  |  |
Basis of Presentation Disclosure [Line Items] |  |  |  |  |  |  |
Goodwill |  |  | 1,295 |  |  |  |
Subsequent Event |  |  |  |  |  |  |
Basis of Presentation Disclosure [Line Items] |  |  |  |  |  |  |
Restructuring and related cost, number of positions eliminated, expected percent |  |  |  |  | 10.00% |  |
Supplemental Credit Agreement | Line of Credit | Subsequent Event |  |  |  |  |  |  |
Basis of Presentation Disclosure [Line Items] |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity | $ 10,000 |  |  |  |  |  |
Line of credit facility, expiration period | 364 days |  |  |  |  |  |
Three Hundred and Sixty Four Day Revolving Credit Facility - Expiring August 2024 | Line of Credit |  |  |  |  |  |  |
Basis of Presentation Disclosure [Line Items] |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  | $ 800 |  |  |  |  |
Line of credit facility, expiration period |  | 364 days |  |  |  |  |
Line of Credit | Revolving Credit Facility |  |  |  |  |  |  |
Basis of Presentation Disclosure [Line Items] |  |  |  |  |  |  |
Debt instrument, unused borrowing capacity, amount |  |  | 10,000 |  |  |  |
Line of credit facility, maximum borrowing capacity |  |  | $ 10,000 |  |  |  |
Line of Credit | Five Year Credit Facility Expiring - May 2029 |  |  |  |  |  |  |
Basis of Presentation Disclosure [Line Items] |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  | $ 4,000 |  |  |  |  |
Line of credit facility, expiration period |  | 5 years |  |  |  |  |
Line of Credit | Five Year Credit Facility - Expiring August 2025 |  |  |  |  |  |  |
Basis of Presentation Disclosure [Line Items] |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  | $ 3,000 |  |  |  |  |
Line of credit facility, expiration period |  | 3 years |  |  |  |  |
Line of Credit | Five Year Credit Facility Expiring - August 2028 |  |  |  |  |  |  |
Basis of Presentation Disclosure [Line Items] |  |  |  |  |  |  |
Line of credit facility, maximum borrowing capacity |  | $ 3,000 |  |  |  |  |
Line of credit facility, expiration period |  | 5 years |  |  |  |  |
Senior Unsecured Notes | Senior Notes |  |  |  |  |  |  |
Basis of Presentation Disclosure [Line Items] |  |  |  |  |  |  |
Debt instrument, face amount |  |  |  |  |  | $ 10,000 |

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