Accounting for Share-Based Payments (Details) - $ / shares	12 Months Ended
	Jan. 29, 2016	Jan. 30, 2015	Jan. 31, 2014
Assumptions used:
Weighted-average expected volatility	31.30%	34.20%	34.20%
Weighted-average dividend yield	1.69%	1.73%	1.45%
Weighted-average risk-free interest rate	1.99%	2.26%	1.31%
Weighted-average expected term	7 years	7 years	7 years 4 months 22 days
Stock options granted, weighted-average grant-date fair value per share	$ 20.27	$ 17.00	$ 12.24