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SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES - Narrative (Details) - USD ($) |  | 1 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 06, 2024 | Aug. 31, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | May 31, 2023
Summary Of Accounting Policies [Line Items] |  |  |  |  |
Percentage of revenue from percentage-of-completion accounting method |  |  | 10.00% |  |
Percentage of revenue from multiple deliverable arrangements |  |  | 15.00% |  |
Collateral balance posted |  |  | $ 0 |  |
Collateral held from counterparties |  |  | 0 |  |
Undistributed earnings of non-U.S. subsidiaries |  |  | $ 5,300,000,000 |  |
Minimum |  |  |  |  |
Summary Of Accounting Policies [Line Items] |  |  |  |  |
Warranty period (in years) |  |  | 1 year |  |
Maximum |  |  |  |  |
Summary Of Accounting Policies [Line Items] |  |  |  |  |
Warranty period (in years) |  |  | 2 years |  |
General duration of hedge positions is equal to or less than (in years) |  |  | 2 years |  |
Product warranty expense, percent of sales, less than |  |  | 0.50% |  |
Copeland |  |  |  |  |
Summary Of Accounting Policies [Line Items] |  |  |  |  |
Proceeds from sale of equity method investments | $ 1,500,000,000 | $ 1,500,000,000 |  |  |
Proceeds from sale of notes receivable |  | $ 1,900,000,000 |  |  |
Copeland |  |  |  |  |
Summary Of Accounting Policies [Line Items] |  |  |  |  |
Noncontrolling interest, ownership percentage by parent | 40.00% |  | 40.00% | 40.00% | 40.00%

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