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OTHER FINANCIAL INFORMATION - Schedule of Other Assets (Details) - USD ($) $ in Millions | Dec. 31, 2024 | Sep. 30, 2024
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Other Financial Information [Abstract] |  |
Pension assets | $ 1,191 | $ 1,194
Operating lease right-of-use assets | 658 | 692
Unbilled receivables (contract assets) | 548 | 519
Deferred income taxes | 57 | 64
Asbestos-related insurance receivables | $ 37 | $ 37

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