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Nonconsolidated Partially-Owned Affiliates - (Details) - USD ($) $ in Millions | Dec. 31, 2021 | Sep. 30, 2021
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Equity Method Investments and Joint Ventures [Abstract] |  |
Investments in partially-owned affiliates | $ 367 | $ 335

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- Definition Amount of investment in equity method investee and investment in and advance to affiliate. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.12) -URI http://asc.fasb.org/extlink&oid=120391452&loc=d3e13212-122682 + Details
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