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OTHER FINANCIAL INFORMATION - Schedule of Other Assets (Details) - USD ($) $ in Millions | Jun. 30, 2024 | Sep. 30, 2023
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Other Financial Information [Abstract] |  |
Pension assets | $ 1,070 | $ 995
Operating lease right-of-use assets | 685 | 550
Unbilled receivables (contract assets) | 515 | 559
Deferred income taxes | 59 | 100
Asbestos-related insurance receivables | $ 38 | $ 53

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