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Common Stock Repurchases	3 Months Ended
Common Stock Repurchases	Feb. 28, 2013
Common Stock Repurchases [Abstract]
Common Stock Repurchases	Common Stock Repurchases We repurchased and retired 4,783,000 shares of our common stock for $106.3 million in the first quarter of fiscal year 2013. The shares were repurchased as part of our Board of Directors authorized return of capital to shareholders in the form of share repurchases through fiscal year 2013 of $350.0 million. No shares were repurchased in the first quarter of fiscal year 2012.