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OTHER FINANCIAL DATA - Other Assets (Details) - USD ($) $ in Millions | Sep. 30, 2024 | Sep. 30, 2023
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Other Financial Data [Abstract] |  |
Pension assets | $ 1,194 | $ 995
Operating lease right-of-use assets | 692 | 550
Unbilled receivables (contract assets) | 519 | 559
Deferred income taxes | 64 | 100
Asbestos-related insurance receivables | $ 37 | $ 53
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] | Assets, Noncurrent, Other than Noncurrent Investments and Property, Plant and Equipment | Assets, Noncurrent, Other than Noncurrent Investments and Property, Plant and Equipment

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