Consolidated Statements Of Comprehensive Income (Parenthetical) - USD ($)	3 Months Ended	9 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement Of Income And Comprehensive Income [Abstract]
Hedge gain (loss) arising during the period, tax	$ (1,900,000)	$ 0	$ (4,000,000.0)	$ 0
Foreign currency translation adjustment, tax	0	0	0	0
Unrealized loss on marketable securities, tax	0	0	0	0
Amortization of net actuarial pension gain included in net income, tax	$ 0	$ 300,000	$ (200,000)	$ 900,000

Other comprehensive income loss general hedge gain loss before reclassification tax (benefit) amount.

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- Definition

Amount of tax expense (benefit), after reclassification adjustments, of appreciation (loss) in value of unsold available-for-sale securities, attributable to parent entity. Excludes amounts related to other than temporary impairment (OTTI) loss.

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Amount of tax expense (benefit), after reclassification adjustments of gain (loss) on foreign currency translation adjustments, foreign currency transactions designated and effective as economic hedges of a net investment in a foreign entity and intra-entity foreign currency transactions that are of a long-term-investment nature.

+ References

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Amount of tax expense (benefit) of reclassification adjustment from accumulated other comprehensive income (loss) for gain (loss) of defined benefit plan.

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