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Earnings Per Share (Tables)
9 Months Ended
Mar. 31, 2013
Earnings Per Share [Abstract]  
Computation Of Earnings Per Share And Weighted Average Number Of Basic And Diluted Shares
  Three Months Ended Nine Months Ended
  March 31, March 31,
    2013   2012   2013   2012
Net income attributable to CACI $ 38,367 $ 40,856 $ 113,751 $ 124,057
 
Weighted average number of basic shares outstanding                
during the period   23,021   26,537   22,968   27,303
Dilutive effect of SSARs/stock options and                
RSUs/restricted shares after application of treasury                
stock method   683   932   771   893
Dilutive effect of the Notes   2   441   1   148
Dilutive effect of accelerated share repurchase                
agreement     176     58
Weighted average number of diluted shares outstanding                
during the period   23,706   28,086   23,740   28,402
 
Basic earnings per share $ 1.67 $ 1.54 $ 4.95 $ 4.54
 
Diluted earnings per share $ 1.62 $ 1.45 $ 4.79 $ 4.37