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Acquisitions and Divestitures Narrative (Details) $ / shares in Units, $ in Millions | 3 Months Ended | 8 Months Ended | 12 Months Ended | 27 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Dec. 31, 2022 USD ($) $ / shares | Dec. 31, 2021 USD ($) $ / shares | Mar. 31, 2023 USD ($) | Mar. 31, 2023 AUD ($) | Sep. 30, 2022 USD ($) | Sep. 30, 2023 USD ($) | May 16, 2022 USD ($) $ / shares | Sep. 30, 2021 USD ($)
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Cash and equivalents | $ 2,271,000,000 | $ 4,726,000,000 |  |  | $ 1,804,000,000 |  |  | $ 2,354,000,000
Net sales | 3,373,000,000 | 3,156,000,000 |  |  |  |  |  |
Acquisition/divestiture costs | 0 | 23,000,000 |  |  |  |  |  |
Proceeds from Issuance of Debt |  |  |  |  | 3,000,000,000 |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal | 2,780,000,000 | 0 |  |  |  |  |  |
Gain from periodic distribution from retained subordinated interest in Vertiv (VRT) | 0 | 453,000,000 |  |  |  |  |  |
Proceeds from subordinated interest | 15,000,000 | 438,000,000 |  |  |  |  |  |
Gain from periodic distribution from retained subordinated interest in Vertiv (VRT), net of tax |  | $ 358,000,000 |  |  |  |  |  |
Gain from periodic distribution from retained subordinated interest in Vertiv (VRT), net of tax, per diluted share | $ / shares |  | $ 0.60 |  |  |  |  |  |
AspenTech |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners |  |  |  |  |  |  | 45.00% |
Acquisition-related Costs |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Acquisition/divestiture costs |  | $ 32,000,000 |  |  |  |  |  |
Interest Expense |  | 37,000,000 |  |  |  |  |  |
RUSSIAN FEDERATION |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Disposal Group, Not Discontinued Operation, Gain (Loss) on Disposal | (47,000,000) |  |  |  |  |  |  |
(Loss) on sale of business, net of tax | $ (47,000,000) |  |  |  |  |  |  |
Disposal Group, Gain (loss) on disposal, net of tax, per diluted share | $ / shares | $ (0.08) |  |  |  |  |  |  |
Backlog |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Intangible assets, weighted average useful life | 3 years |  |  |  |  |  |  |
AspenTech |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Cash contribution to AspenTech shareholders |  |  |  |  | 6,000,000,000 |  |  |
Business Acquisition, Percentage of Voting Interests Acquired |  |  |  |  |  |  | 55.00% |
Proceeds from Noncontrolling Interests |  |  |  |  | 5,900,000,000 |  |  |
Adjustments to Additional Paid in Capital, Other |  |  |  |  | 550,000,000 |  |  |
Approximate per share payout | $ / shares |  |  |  |  |  |  | $ 87.69 |
Cash and equivalents |  |  |  |  |  |  | $ 168,000,000 |
Net sales | $ 168,000,000 |  |  |  |  |  |  |
Acquisition/divestiture costs |  | $ 22,000,000 |  |  |  |  |  |
Intangibles |  |  |  |  |  |  | 4,390,000,000 |
AspenTech | Backlog |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Intangibles |  |  |  |  |  |  | $ 310,000,000 |
Heritage AspenTech |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Acquisition/divestiture costs |  |  |  |  | $ 68,000,000 |  |  |
Forecast [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Pretax periodic distribution from retained subordinated interest |  |  |  |  |  | $ 75,000,000 |  |
Forecast [Member] | Minimum [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Period over which distributions are expected to occur |  |  |  |  |  | 2 years |  |
Forecast [Member] | Maximum [Member] |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Period over which distributions are expected to occur |  |  |  |  |  | 3 years |  |
Forecast [Member] | Micromine |  |  |  |  |  |  |  |
Business Acquisition [Line Items] |  |  |  |  |  |  |  |
Purchase price |  |  | $ 623,000,000 | $ 900 |  |  |  |

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