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Acquisitions And Divestitures - Narrative (Details) $ / shares in Units, $ in Millions, $ in Millions |  | 3 Months Ended | 5 Months Ended | 12 Months Ended
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May 16, 2022 USD ($) business $ / shares | Sep. 30, 2023 USD ($) | Jun. 30, 2023 USD ($) | Mar. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Sep. 30, 2022 USD ($) | Jun. 30, 2022 USD ($) | Mar. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) $ / shares | Dec. 31, 2020 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2022 AUD ($) | Sep. 30, 2023 USD ($) business $ / shares | Sep. 30, 2022 USD ($) business $ / shares | Sep. 30, 2021 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  | $ 4,090 | $ 3,946 | $ 3,756 | $ 3,373 | $ 3,892 | $ 3,465 | $ 3,291 | $ 3,156 |  |  |  | $ 15,165 | $ 13,804 | $ 12,932
Acquisition/divestiture costs |  |  |  |  |  |  |  |  |  |  |  |  | 69 | 91 | 0
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 147
Proceeds from issuance of debt |  |  |  |  |  |  |  |  |  |  |  |  |  |  | 3,000
Purchases of businesses, net of cash acquired |  |  |  |  |  |  |  |  |  |  |  |  | 705 | 5,702 | 1,592
Goodwill |  | $ 14,480 |  |  |  | $ 13,946 |  |  |  |  |  |  | 14,480 | 13,946 | 6,967
Disposal group, loss on disposal |  |  |  |  |  |  |  |  |  |  |  |  | $ (13,393) | (486) | 0
Percent of consolidated sales |  | 2.00% |  |  |  |  |  |  |  |  |  |  | 2.00% |  |
Proceeds from subordinated interest |  |  |  |  | $ 15 |  |  |  | 438 |  |  |  | $ 161 |  |
Gain from periodic distribution from retained subordinated interest in Vertiv (VRT) |  |  |  |  |  |  |  |  | 453 |  |  |  | 161 | 453 | $ 0
Gain from periodic distribution from retained subordinated interest in Vertiv (VRT), net of tax |  |  |  |  |  |  |  |  | $ 358 |  |  |  | $ 122 |  |
Gain from periodic distribution from retained subordinated interest in Vertiv (VRT), net of tax, per diluted share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  | $ 0.60 |  |  |  | $ 0.21 |  |
Pretax periodic distribution from retained subordinated interest in Vertiv (VRT) |  |  |  |  |  |  |  |  |  |  |  |  | $ 40 |  |
Acquisition-Related Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition/divestiture costs |  |  |  |  |  |  |  |  |  | $ 159 |  |  |  |  |
Interest expense |  |  |  |  |  |  |  |  |  |  |  |  |  | 56 |
RUSSIAN FEDERATION |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, loss on disposal |  |  |  |  |  |  |  |  |  |  |  |  | (47) | 181 |
Disposal group, loss on disposal, after tax |  |  |  |  |  |  |  |  |  |  |  |  | $ (47) | $ (190) |
Disposal group, loss on disposal, net of tax, per diluted share (in dollars per share) | $ / shares |  |  |  |  |  |  |  |  |  |  |  |  | $ 0.08 | $ 0.32 |
RUSSIAN FEDERATION | Operations |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, loss on disposal |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 36 |
RUSSIAN FEDERATION | Other Deductions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, loss on disposal |  |  |  |  |  |  |  |  |  |  |  |  |  | 145 |
RUSSIAN FEDERATION | Restructuring Costs |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Disposal group, loss on disposal |  |  |  |  |  |  |  |  |  |  |  |  |  | 10 |
AspenTech |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Noncontrolling interest, ownership percentage | 45.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
AspenTech |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of businesses contributed | business | 2 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash contribution to AspenTech shareholders | $ 6,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of voting interest acquired | 55.00% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from noncontrolling interests | $ 5,900 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Adjustments to additional paid in capital | $ 550 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Approximate per share payout (in dollars per share) | $ / shares | $ 87.69 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Cash remaining on balance sheet | $ 168 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Net sales |  |  |  |  |  |  |  |  |  |  |  |  | $ 752 | 356 |
Acquisition/divestiture costs |  |  |  |  |  |  |  |  |  |  |  |  |  | 91 |
Goodwill | 7,225 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Goodwill, expected tax deductible amount | $ 34 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Heritage AspenTech |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Acquisition/divestiture costs |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 68 |
Other Segment Transactions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of businesses acquired | business |  |  |  |  |  |  |  |  |  |  |  |  | 2 |  |
Purchases of businesses, net of cash acquired |  |  |  |  |  |  |  |  |  |  |  |  | $ 705 |  |
Goodwill |  | $ 429 |  |  |  |  |  |  |  |  |  |  | 429 |  |
Goodwill, expected tax deductible amount |  | 0 |  |  |  |  |  |  |  |  |  |  | 0 |  |
Identifiable intangible assets |  | $ 314 |  |  |  |  |  |  |  |  |  |  | $ 314 |  |
Intangible assets, weighted average useful life |  |  |  |  |  |  |  |  |  |  |  |  | 9 years |  |
Micromine |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Purchase price |  |  |  |  |  |  |  |  |  |  | $ 623 | $ 900 |  |  |
Series of Individually Immaterial Business Acquisitions |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of businesses acquired | business |  |  |  |  |  |  |  |  |  |  |  |  |  | 3 |
Purchases of businesses, net of cash acquired |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 130 |
Annualized sales |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 40 |
Series of Individually Immaterial Business Acquisitions | Control Systems & Software |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of businesses acquired | business |  |  |  |  |  |  |  |  |  |  |  |  |  | 2 |
Series of Individually Immaterial Business Acquisitions | AspenTech |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Number of businesses acquired | business |  |  |  |  |  |  |  |  |  |  |  |  |  | 1 |

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