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Black-Scholes Option Valuation Assumptions (Detail)

9 Months Ended

Nov. 03, 2018

Oct. 28, 2017

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Risk-free interest rate

^[1]

2.60%

2.10%

Dividend yield

2.50%

3.10%

Volatility factor

^[2]

39.50%

38.50%

Weighted-average expected term

^[3]

4 years 6 months

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.

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The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(iii)
-URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901

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The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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-SubTopic 10
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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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