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CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Statement of Comprehensive Income [Abstract]
Tax on unrealized gain (loss) on available for sale securities	$ (1,135)	$ 426	$ (330)
Tax on net unrealized gain (loss) on derivatives	(56)	61	23
Tax on adjustment to postemployment benefit obligation	$ 3,688	$ 2,162	$ (5,934)

X

- Definition

Amount of tax expense (benefit), after reclassification adjustments, of increase (decrease) in accumulated gain (loss) from derivative instruments designated and qualifying as the effective portion of cash flow hedges and an entity's share of an equity investee's increase (decrease) in deferred hedging gain (loss), attributable to parent entity.

+ References

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-Publisher FASB



-Name Accounting Standards Codification



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-SubTopic 10



-Section 50



-Paragraph 1A



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

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



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Amount of tax (expense) benefit, after reclassification adjustments, of (increase) decrease in accumulated other comprehensive (income) loss related to pension and other postretirement defined benefit plans.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef



-Publisher FASB



-Name Accounting Standards Codification



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-URI http://asc.fasb.org/extlink&oid=36458714&loc=d3e640-108580



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