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Consolidated Statements of Comprehensive Income (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Tax benefit (expense) on change in fair value of cash flow hedges	$ 4,482	$ 651	$ (7,053)
Tax benefit (expense) on change in fair value of available-sale-of securities	9	(4)	(1)
Tax (expense) benefit on unrealized gains (losses) on defined benefit plan	$ (254)	$ (697)	$ 747

X

- 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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