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Common Stock Repurchases	3 Months Ended
Common Stock Repurchases	Feb. 28, 2015
Common Stock Repurchases [Abstract]
Common Stock Repurchases	Common Stock Repurchases We repurchased and retired 0.3 million shares of our common stock for $7.8 million in the three months ended February 28, 2015 and 0.4 million shares for $9.8 million in the three months ended February 28, 2014. The shares were repurchased in both periods as part of our Board of Directors authorized $100.0 million share repurchase program.