Condensed Consolidated Statements of Comprehensive Earnings (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
Mar. 31, 2013	Mar. 31, 2012	Mar. 31, 2013	Mar. 31, 2012
Comprehensive earnings
Net earnings	$ 42,446	$ 38,751	$ 69,814	$ 67,168
Other comprehensive earnings:
Foreign currency translation adjustments	(10,509)	7,928	(6,058)	(453)
Taxes on changes on foreign currency translation adjustments	(193)	2,348	419	3,293
Foreign currency translation adjustments, net of tax	(10,702)	10,276	(5,639)	2,840
Reclassification of realized losses on derivatives to earnings	43	43	86	88
Taxes on changes on derivative transactions	(16)	(17)	(33)	(34)
Derivative adjustments, net of tax	27	26	53	54
Minimum retirement benefit liability adjustments:
Minimum retirement benefits liability adjustments	1,794	96	2,031	127
Taxes on changes on minimum retirement benefit liability adjustments	(725)	(45)	(725)	(45)
Minimum retirement benefit liability adjustments, net of tax	1,069	51	1,306	82
Total comprehensive earnings	$ 32,840	$ 49,104	$ 65,534	$ 70,144

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