Consolidated Statements of Comprehensive Income (Loss) (Unaudited) (Parenthetical) $ in Millions	9 Months Ended
Jun. 30, 2022 USD ($)
Statement of Comprehensive Income [Abstract]
Net of tax	$ (1)

Amount of tax expense (benefit) allocated to other comprehensive income (loss).

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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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+ Details