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Basis Of Presentation (Components Of Comprehensive Income) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2011
Dec. 31, 2010
Basis Of Presentation [Abstract]        
Net income for the period $ 47,443 $ 37,110 $ 82,429 $ 58,781
Foreign currency translation adjustments (1,354) 1,168 (11,972) 7,145
Unrealized gain (loss) on cash flow hedges 3,132 1,419 (2,070) 2,989
Unrealized gain on marketable securities   57   101
Actuarial gain (loss) relating to defined benefit pension plans 342    (206)   
Comprehensive income for the period $ 49,563 $ 39,754 $ 68,181 $ 69,016