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Acquisitions and Divestitures - Narrative (Details) - USD ($) $ in Millions |  | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jan. 05, 2023 | Dec. 31, 2023 | Sep. 30, 2022 | Dec. 31, 2023 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquisitions |  |  |  | $ 953 |  | $ 110 | $ 88
Goodwill |  | $ 26,751 |  | $ 26,751 | $ 26,751 | $ 25,817 | $ 27,038
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  | Other charges |  |  |  |
Disposal Group, Disposed of by Sale, Not Discontinued Operations | GIST |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Consideration for sale of business |  |  | $ 184 |  |  |  |
Proceeds from divestiture of businesses |  |  | 75 |  |  |  |
Net proceeds |  |  | 109 |  |  |  |
Loss on sale of business |  |  | 21 |  |  |  |
After tax benefit from loss on sale of business |  |  | $ 3 |  |  |  |
nexAir, LLC |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Acquisitions | $ 811 |  |  |  |  |  |
Ownership interest in acquiree before acquisition (percent) | 23.00% |  |  |  |  |  |
Ownership interest acquired (percent) | 77.00% |  |  |  |  |  |
Purchase price | $ 866 |  |  |  |  |  |
Fair value of previously held equity interest | $ 183 |  |  |  |  |  |
Ownership interest in acquiree after acquisition (percent) | 100.00% |  |  |  |  |  |
Pro forma sales since acquisition date |  | $ 408 |  |  |  |  |
Measurement period adjustments related to working capital and deferred taxes |  |  |  |  | $ 27 |  |
Identifiable intangible assets | $ 245 |  |  |  |  |  |
Goodwill | 485 |  |  |  |  |  |
nexAir, LLC | Customer Relationships |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |
Identifiable intangible assets | $ 245 |  |  |  |  |  |
Estimated useful life of acquired intangible assets | 20 years |  |  |  |  |  |

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