Earnings per Share and Shareholders' Equity Calculation of Earnings per Share (Details) - shares shares in Thousands	3 Months Ended		9 Months Ended
	Oct. 29, 2016	Oct. 31, 2015	Oct. 29, 2016	Oct. 31, 2015
Reconciliation of the number of shares used in the calculation of diluted earnings (loss) per share [Abstract]
Basic shares	82,026	87,493	82,011	88,244
Assumed exercise of dilutive stock options	339	640	407	751
Assumed exercise of dilutive RSUs and PSUs	172	236	225	234
Diluted shares	82,537	88,369	82,643	89,229