Consolidated Statements of Comprehensive Earnings - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2017	Jun. 30, 2016
Comprehensive earnings
Net earnings	$ 53,626	$ 51,047	$ 138,279	$ 117,691
Other comprehensive earnings:
Foreign currency translation adjustments	6,643	(9,359)	(4,251)	(9,488)
Net gain (loss) on foreign currency transactions designated as hedges of net investments in a foreign subsidiaries	(3,313)	395	(428)	912
Taxes on changes in foreign currency translation adjustments	835	444	349	149
Foreign currency translation and transactions adjustments, net of tax	4,165	(8,520)	(4,330)	(8,427)
Reclassification of net realized (gains) losses on derivatives to earnings	(18)	(18)	(54)	39
Taxes on changes in derivative transactions	7	7	21	(14)
Derivative adjustments, net of tax	(11)	(11)	(33)	25
Minimum retirement benefit liability adjustments:
Amortization of net prior service cost (benefit)	55	56	168	169
Amortization of net loss	644	424	1,925	1,276
Foreign currency exchange rate changes on minimum retirement benefit liabilities	(746)	657	197	1,228
Taxes on changes on minimum retirement benefit liability adjustments, net of foreign currency exchange rate changes	6	(421)	(839)	(997)
Pension and other postretirement benefit plan adjustments, net of tax	(41)	716	1,451	1,676
Total comprehensive earnings	$ 57,739	$ 43,232	$ 135,367	$ 110,965