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STOCK-BASED COMPENSATION (Summary Of Part B RSUs Granted, Maximum Eligible Shares Of Stock And Grant Date Fair Value Per Part B RSU) (Details) - $ / shares
3 Months Ended 9 Months Ended
Mar. 31, 2017
Dec. 31, 2016
Sep. 30, 2016
Jun. 30, 2016
Mar. 31, 2016
Dec. 31, 2015
Sep. 30, 2015
Mar. 31, 2017
Mar. 31, 2016
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Number of RSUs, Granted 171,316 191,015 200,425 312,516 284,773 282,074 272,813    
Maximum eligible shares of the Company's common stock 880,564 981,817 1,030,185 1,606,332 1,463,733 1,449,860 1,426,812 880,564 1,463,733
Grant date fair value per Part B RSU $ 27.39 $ 75.56 $ 47.00 $ 37.03 $ 25.12 $ 25.26 $ 17.83    
Units converted to Company's common stock at vesting date       1,078,812 475,446 40,182      
Part B Restricted Stock Units [Member]                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Number of RSUs, Granted               562,756  
Grant date fair value per Part B RSU               $ 50.72  
Part C Restricted Stock Units [Member]                  
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]                  
Number of RSUs, Granted 11,250     10,979       33,091 29,805