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

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

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Represents grant frequency of equity-based compensation awards.

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Represents the maximum increase (expressed as a percentage of target level) in the number of shares a participant receives based on the level of achievement of performance goals.

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Represents the period over which performance goals of the entity are vested.

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Represents the requisite service period for non-employee director based on which, fair value of options granted expensed on the date of grant.

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- Definition

Represents the number of officer employees of the entity to whom stock awards were granted under the equity-based compensation arrangement.

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Represents the potential lowest number of shares of common stock that a participant could receive based on the level of achievement of performance goals.

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- Definition

The date when the equity-based award expires as specified in the award agreement, which may be presented in a variety of ways (for example, year, month and year, day, month and year, quarter of a year).

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Description of the period of time over which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, which may be expressed in a variety of ways (for example, in years, month and year).

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Description of award terms as to how many shares or portion of an award are no longer contingent on satisfaction of either a service condition, market condition or a performance condition, thereby giving the employee the legal right to convert the award to shares, to sell the shares, and be entitled to the cash proceeds of such sale. For example, vesting may be expressed as being 25 percent of the shares under option on each anniversary of the grant date.

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph b(2)(c)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph c(1)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)(2)(iii)(1)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

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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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- Definition

The period of time an equity-based award is expected to be outstanding. An equity-based award's expected term is generally determined based on, among other factors, the instrument's contractual term and the effects of employees' expected exercise and post-vesting employment termination behavior.

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Reference 1: 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=6793087&loc=d3e301413-122809

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Statement of Financial Accounting Standard (FAS)
-Number 123R
-Paragraph A240
-Subparagraph e(2)(a)
-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher SEC
-Name Staff Accounting Bulletin (SAB)
-Number Topic 14
-Section D
-Subsection 2

Reference 4: 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=6415400&loc=d3e5070-113901

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The estimated measure of the maximum 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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The estimated measure of the minimum 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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The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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

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- Definition

The range of expected volatilities used and the weighted-average expected volatility for an entity using a valuation technique with different volatilities during the contractual term.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Stock-Based Compensation (Details) (USD $)	3 Months Ended	9 Months Ended			3 Months Ended		9 Months Ended
Stock-Based Compensation (Details) (USD $)	Apr. 29, 2011	Jul. 29, 2011 Stock Options Awards	Jul. 30, 2010 Stock Options Awards	Jul. 29, 2011 Other option awards	Jan. 28, 2011 Performance Share Awards	Jan. 29, 2010 Performance Share Awards	Jul. 29, 2011 Performance Share Awards	Jul. 29, 2011 Restricted Stock Awards
Stock-Based Compensation
Frequency of grants		On an annual basis in the first quarter of the company's fiscal year					On an annual basis in the first quarter of the company's fiscal year
Portion of stock-based award that generally vest per year for employees and non-employee directors		one-third						one-third
Award vesting period (in years)		3 years		3 years			3 years	3 years
Term of award (in years)		10 years		10 years
Requisite service period for non-employee director based on which, fair value of options granted expensed on the date of grant (in years)		10
Fair value assumptions for options granted
Expected life of option (in years)		6	6
Expected volatility, low end of range (as a percent)		33.34%	33.00%
Expected volatility, high end of range (as a percent)		33.43%	33.07%
Weighted-average volatility (as a percent)		33.42%	33.00%
Risk-free interest rate, low end of range (as a percent)		1.72%	2.51%
Risk-free interest rate, high end of range (as a percent)		2.36%	2.87%
Expected dividend yield, low end of range (as a percent)		1.04%	1.52%
Expected dividend yield, high end of range (as a percent)		1.16%	1.68%
Weighted-average dividend yield (as a percent)		1.05%	1.54%
Grant date weighted-average fair value (in dollars per share)		$ 20.30	$ 12.33		$ 63.52	$ 40.73		$ 61.23
Performance goal period (in years)							3
Maximum increase in the number of shares of common stock a participant receives based on the achievement of performance goals (as a percent)							200.00%
Potential lowest number of shares of common stock that could be received based on the achievement level of performance goals							0
Number of officer employees who received restricted stock awards	2