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- Definition

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.

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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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- Definition

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

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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- Definition

Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (f)(2)(i)
-URI http://asc.fasb.org/extlink&oid=96867065&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.D.2)
-URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809

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No definition available.

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Stock-Based Compensation (Assumptions To Estimate The Fair Value For Stock Options At Grant Date) (Details) - $ / shares				12 Months Ended
	Feb. 28, 2017	Feb. 29, 2016	Feb. 24, 2015	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Assumptions
Weighted-average volatility				40.10%	36.80%	29.40%
Weighted-average expected dividend yield				2.40%	2.20%	1.80%
Expected life in years				7 years 1 month	6 years 11 months	6 years 8 months
Minimum [Member]
Assumptions
Risk-free interest rate				1.00%	0.70%	0.20%
Maximum [Member]
Assumptions
Risk-free interest rate				2.50%	1.90%	2.10%
Stock options [Member]
Grant Date Information
Weighted-average fair value per option at grant date	$ 16	$ 16	$ 21
Exercise price per option	$ 47	$ 51	$ 81	$ 47