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Condensed Consolidated Statements of Comprehensive Earnings (USD $)
In Thousands, unless otherwise specified
3 Months Ended 6 Months Ended
Mar. 31, 2012
Mar. 31, 2011
Mar. 31, 2012
Mar. 31, 2011
Comprehensive earnings        
Net earnings $ 38,751 $ 32,090 $ 67,168 $ 54,489
Other comprehensive earnings:        
Foreign currency translation adjustments 7,928 11,009 (453) 8,629
Tax changes on foreign currency translation adjustments 2,348 (1,054) 3,293 (916)
Foreign currency translation adjustments, net of tax 10,276 9,955 2,840 7,713
Reclassification of realized losses on derivatives to earnings 43 56 88 115
Tax changes on derivative transactions (17) (21) (34) (43)
Derivative adjustments, net of tax 26 35 54 72
Minimum retirement benefit liability adjustments:        
Foreign currency exchange rate changes 51 (150) 82 (178)
Total comprehensive earnings $ 49,104 $ 41,930 $ 70,144 $ 62,096