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Derivatives and Hedge Accounting Activities (Narrative) (Detail) - USD ($) | Sep. 30, 2022 | Sep. 30, 2021
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Derivative Instrument Detail [Abstract] |  |
Derivative instruments designated in fair value hedges | $ 0 | $ 0

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- Definition Net fair value of all derivative instruments designated as fair value hedging instruments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI https://asc.fasb.org/extlink&oid=126966630&loc=d3e41228-113958 + Details
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