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CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Parenthetical) (USD $)
3 Months Ended
Dec. 31, 2011
Dec. 31, 2010
CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME    
Foreign currency translation adjustments, taxes $ 0 $ 0
Retirement plans - amortization of accumulated other comprehensive loss into net periodic benefit cost, taxes $ 0 $ 0