XML 57 R45.htm IDEA: XBRL DOCUMENT v3.3.1.900
Shareholders' Equity (Details) - USD ($)
 2 Months Ended 3 Months Ended 6 Months Ended
Jun. 16, 2015
Apr. 14, 2015
Apr. 10, 2015
Jun. 16, 2015
Nov. 30, 2015
Nov. 30, 2014
Nov. 30, 2015
Nov. 30, 2014
Class of Stock [Line Items]                
Accelerated share repurchase program, up-front payment     $ 100,000,000          
Repurchase of common stock (in shares) 324,742 1,630,988   1,955,730   1,313,848   4,879,012
Accelerated share repurchases (in dollars per share)       $ 51.13        
Repurchase of common stock             $ 75,369,000 $ 171,933,000
Repurchase of common stock (in dollars per share)         $ 59.87 $ 36.11 $ 57.07 $ 35.23
Remaining authorized repurchase amount         $ 327,500,000   $ 327,500,000  
Other than accelerated share repurchase program                
Class of Stock [Line Items]                
Repurchase of common stock (in shares)         625,573   1,320,563  
Repurchase of common stock         $ 37,500,000 $ 47,400,000 $ 75,400,000 $ 171,900,000