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Basis of Presentation and Summary of Accounting Principles (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Basis of Presentation [Line Items] |  |  |  |
Unbilled |  | $ 26,481 | $ 23,909 |
Contractual Obligation |  | 735 | 818 |
Contractual Obligation, Consumed in Current Year |  | 83 | 111 | $ 314
Contractual Obligation, Due in Next Fiscal Year |  | 81 |  |
Contractual Obligation, Due in Second Year |  | 72 |  |
Contractual Obligation, Due in Third Year |  | 61 |  |
Contractual Obligation, Due in Fourth Year |  | 73 |  |
Contractual Obligation, Due in Fifth Year |  | 60 |  |
Contractual Obligation, Due after Fifth Year |  | 388 |  |
Capitalized Contract Cost, Net |  | $ 2,600 | $ 2,300 |
Collaborators interests existing programs low end |  | 13.00% |  |
Collaborators interests existing programs high end |  | 49.00% |  |
Partner share individual program maximum |  | 25.00% |  |
Revenue, Remaining Performance Obligation, Amount |  | $ 196,000 |  |
Revenue, Remaining Performance Obligations, to be recognized within 12 months |  | 25.00% |  |
Revenue, Remaining Performance Obligations, to be recognized longer than 1 year |  | 45.00% |  |
Revenue, Remaining Performance Obligation, years to be recognized |  | 20 years |  |
Commercial Aerospace [Member] |  |  |  |
Basis of Presentation [Line Items] |  |  |  |
Accounts Receivable, after Allowance for Credit Loss, Percent |  | 80.00% | 73.00% |
Russia Sanctions Impact on Pratt & Whitney and Collins |  |  |  |
Basis of Presentation [Line Items] |  |  |  |
Charges as a Result of Russia Sanctions and Export Controls, Gross | $ 290 |  |  |
Charges as a Result of Russia Sanctions and Export Controls, Net of Tax | $ 210 |  |  |
Accounts Receivable [Member] |  |  |  |
Basis of Presentation [Line Items] |  |  |  |
Unbilled |  | $ 427 | $ 298 |

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