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Consolidated Statements of Changes in Shareholders' Equity (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2020
Cash dividends declared per ordinary share	$ 1.545	$ 1.4075	$ 1.2675
Unrealized (loss) gain on derivatives, net of tax	$ (46,580)	$ 13,773	$ 18,836
Unrealized loss on short-term interest-bearing investments, net of tax	(22,797)	(1,274)	(2)
Unrealized loss on defined benefit plan, net of tax	$ (3,099)	$ (3,161)	$ (7,172)

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Other comprehensive income loss in net gain loss from cash flow hedges net of tax.

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Amount, after tax, of accumulated unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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Amount, after tax, of accumulated other comprehensive (income) loss for defined benefit plan, that has not been recognized in net periodic benefit cost (credit).

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Aggregate dividends declared during the period for each share of common stock outstanding.

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