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Acquisitions and Divestitures Narrative (Details) - USD ($) $ in Millions |  | 3 Months Ended | 12 Months Ended | 27 Months Ended
--- | --- | --- | --- | ---
Oct. 01, 2020 | Mar. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Sep. 30, 2021 | Sep. 30, 2023
Business Acquisition & Disposal [Line Items] |  |  |  |  |  |
Purchase price of businesses, net of cash acquired |  |  | $ 39 | $ 1,611 |  |
Goodwill |  |  | 7,695 |  | $ 7,723 |
Gain from periodic distribution from retained subordinated interest in Vertiv (VRT) |  |  | (453) | 0 |  |
Periodic distribution from retained subordinated interest in Vertiv (VRT) |  |  | 438 | $ 0 |  |
Automation Solutions [Member] |  |  |  |  |  |
Business Acquisition & Disposal [Line Items] |  |  |  |  |  |
Goodwill |  |  | 6,534 |  | 6,552 |
Automation Solutions [Member] | Open Systems International Inc. [Member] |  |  |  |  |  |
Business Acquisition & Disposal [Line Items] |  |  |  |  |  |
Purchase price of businesses, net of cash acquired | $ 1,600 |  |  |  |  |
Annualized sales |  |  |  |  | 191 |
Goodwill | 967 |  |  |  |  |
Goodwill expected tax deductible amount | 0 |  |  |  |  |
Intangibles | $ 783 |  |  |  |  |
Intangible assets, weighted average useful life | 11 years |  |  |  |  |
Deferred tax liabilities | $ 193 |  |  |  |  |
Climate Technologies [Member] |  |  |  |  |  |
Business Acquisition & Disposal [Line Items] |  |  |  |  |  |
Goodwill |  |  | $ 751 |  | $ 753 |
Forecast [Member] |  |  |  |  |  |
Business Acquisition & Disposal [Line Items] |  |  |  |  |  |
Pretax periodic distribution from retained subordinated interest in Vertiv (VRT) |  |  |  |  |  | $ 100
Period over which distributions are expected to occur |  |  |  |  |  | 2 years
Forecast [Member] | Automation Solutions [Member] | AspenTech [Member] |  |  |  |  |  |
Business Acquisition & Disposal [Line Items] |  |  |  |  |  |
Cash contribution to AspenTech shareholders |  | $ 6,000 |  |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  | 55.00% |  |  |  |

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