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Other Financial Information - Schedule of Other Liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Sep. 30, 2023
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Other Financial Information [Abstract] |  |
Deferred income taxes | $ 2,827 | $ 1,959
Operating lease liabilities (noncurrent) | 465 | 404
Pension and postretirement liabilities | 449 | 435
Asbestos litigation | $ 169 | $ 173

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- Definition Carrying amount as of the balance sheet date of reserves for the costs of settling insured claims and costs incurred in the claims settlement process attributable to asbestos and environmental claims, before estimated recoveries from reinsurers. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 944 -SubTopic 40 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (cc) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-3 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480081/944-40-50-3 + Details
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