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OTHER FINANCIAL DATA - Schedule of Other Assets (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Sep. 30, 2024
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Other Financial Data [Abstract] |  |
Pension assets | $ 1,229 | $ 1,194
Operating lease right-of-use assets | 637 | 692
Unbilled receivables (contract assets) | 621 | 519
Deferred income taxes | 79 | 64
Asbestos-related insurance receivables | $ 55 | $ 37
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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