Stock Repurchase Activity	3 Months Ended
Oct. 31, 2015
Stock Repurchase Activity [Abstract]
Stock Repurchase Program	7. Stock Repurchase Activity In November 2012, the Board of Directors (Board) authorized a Stock Repurchase Program (Program) of $250.0 million to repurchase our common stock through January 29, 2016. The Program replaced an existing program (Former Program) and authorizes repurchases of our common stock in open market or negotiated transactions, with the amount and timing of repurchases dependent on market conditions and at the discretion of our management. In addition to the Program, we also acquire shares of our common stock from holders of restricted stock unit awards to satisfy tax withholding requirements due at vesting. Shares acquired from holders of restricted stock unit awards to satisfy tax withholding requirements do not reduce the Program authorization. During the thirteen weeks ended October 31, 2015, we repurchased 1,341,170 shares of our common stock at a cost of $50.5 million. During the thirty-nine weeks ended October 31, 2015, we repurchased 2,137,389 shares of our common stock at a cost of $87.9 million, including 42,877 shares acquired from holders of restricted stock unit awards to satisfy tax withholding requirements of $2.1 million. During the thirteen weeks ended November 1, 2014, we repurchased 371,589 shares of our common stock at a cost of $16.7 million, including 689 shares acquired from holders of restricted stock unit awards to satisfy tax withholding requirements of $31,000. During the thirty-nine weeks ended November 1, 2014, we repurchased 1,072,295 shares of our common stock at a cost of $54.6 million, including 81,895 shares acquired from holders of restricted stock unit awards to satisfy tax withholding requirements of $4.7 million. As of October 31, 2015, we had approximately $87.5 million remaining under the Program for stock repurchases. Subsequent to October 31, 2015, our Board authorized a stock repurchase program of $300.0 million through February 2, 2019 effective November 19, 2015. The new program replaces the authorization that was in place at October 31, 2015. Stock repurchases may be made in the open market or in negotiated transactions with the amount and timing of repurchases dependent on market conditions and at the discretion of our management.

7. Stock Repurchase Activity

In November 2012, the Board of Directors (Board) authorized a Stock Repurchase Program (Program) of $250.0 million to repurchase our common stock through January 29, 2016. The Program replaced an existing program (Former Program) and authorizes repurchases of our common stock in open market or negotiated transactions, with the amount and timing of repurchases dependent on market conditions and at the discretion of our management. In addition to the Program, we also acquire shares of our common stock from holders of restricted stock unit awards to satisfy tax withholding requirements due at vesting. Shares acquired from holders of restricted stock unit awards to satisfy tax withholding requirements do not reduce the Program authorization.

During the thirteen weeks ended October 31, 2015, we repurchased 1,341,170 shares of our common stock at a cost of $50.5 million. During the thirty-nine weeks ended October 31, 2015, we repurchased 2,137,389 shares of our common stock at a cost of $87.9 million, including 42,877 shares acquired from holders of restricted stock unit awards to satisfy tax withholding requirements of $2.1 million.

During the thirteen weeks ended November 1, 2014, we repurchased 371,589 shares of our common stock at a cost of $16.7 million, including 689 shares acquired from holders of restricted stock unit awards to satisfy tax withholding requirements of $31,000. During the thirty-nine weeks ended November 1, 2014, we repurchased 1,072,295 shares of our common stock at a cost of $54.6 million, including 81,895 shares acquired from holders of restricted stock unit awards to satisfy tax withholding requirements of $4.7 million.

As of October 31, 2015, we had approximately $87.5 million remaining under the Program for stock repurchases.

Subsequent to October 31, 2015, our Board authorized a stock repurchase program of $300.0 million through February 2, 2019 effective November 19, 2015. The new program replaces the authorization that was in place at October 31, 2015. Stock repurchases may be made in the open market or in negotiated transactions with the amount and timing of repurchases dependent on market conditions and at the discretion of our management.