Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	3 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Comprehensive earnings
Net earnings	$ 46,548	$ 25,820
Other comprehensive earnings:
Foreign currency translation adjustments	(18,635)	(10,254)
Gain on foreign currency transactions designated as hedges of net investments in a foreign subsidiaries	3,830	862
Taxes on changes in foreign currency translation adjustments	(306)	306
Foreign currency translation and transactions adjustments, net of tax	(15,111)	(9,086)
Reclassification of net realized (gains) losses on derivatives to earnings	(18)	29
Taxes on changes in derivative transactions	7	(11)
Derivative adjustments, net of tax	(11)	18
Minimum retirement benefit liability adjustments:
Amortization of net prior service cost (benefit)	56	56
Amortization of net loss	641	427
Foreign currency exchange rate changes on minimum retirement benefit liabilities	1,255	284
Taxes on changes on minimum retirement benefit liability adjustments, net of foreign currency exchange rate changes	(693)	(286)
Pension and other postretirement benefit plan adjustments, net of tax	1,259	481
Total comprehensive earnings	$ 32,685	$ 17,233