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Other Financial Data (Other Assets) (Details) - Other Assets [Member] - USD ($) $ in Millions | Sep. 30, 2021 | Sep. 30, 2020
--- | --- | ---
Pension assets | $ 1,015 | $ 265
Operating lease right-of-use assets | 558 | 508
Deferred income taxes | 95 | 100
Asbestos-related insurance receivables | $ 115 | $ 99

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