Black-Scholes Option Valuation Assumptions (Detail)		12 Months Ended
		Jan. 28, 2017	Jan. 31, 2015
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Risk-free interest rates	[1]	1.30%	1.50%
Dividend yield		3.00%	3.10%
Volatility factors of the expected market price of the Company's common stock	[2]	35.40%	41.20%
Weighted-average expected term	[3]	4 years 4 months 24 days	4 years 6 months

[1] Based on the U.S. Treasury yield curve in effect at the time of grant with a term consistent with the expected life of our stock options.

[2] Based on a combination of historical volatility of the Company’s common stock and implied volatility.

[3] Represents the period of time options are expected to be outstanding. The weighted average expected option terms were determined based on historical experience.