Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount

No definition available.

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- Definition

Potential Compensation Expense for Performance Based Shares If Performance Goals Are Met

+ References

No definition available.

+ Details

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- Definition

Share-based compensation by share-based payment award, equity awards other than options, target amount of performance shares

+ References

No definition available.

+ Details

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- Definition

Weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Unrecognized cost of unvested options awarded to employees as compensation.

+ References

No definition available.

+ Details

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- Definition

The cash inflow associated with the amount received from holders exercising their stock options. This item inherently excludes any excess tax benefit, which the entity may have realized and reported separately.

+ 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 (j)
-URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 14
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3255-108585

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Glossary Financing Activities
-URI http://asc.fasb.org/extlink&oid=6513228

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period.

+ References

+ Details

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- Definition

The number of grants made 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).

+ References

+ Details

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- Definition

The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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- Definition

The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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+ Details

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- Definition

Fair value of share-based awards for which the grantee gained the right by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash.

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- Definition

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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No definition available.

+ Details

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- Definition

Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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+ Details

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- Definition

Price of a single share of a number of saleable stocks of a company.

+ References

No definition available.

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Stock-Based Awards - Narratives (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended		12 Months Ended
	Jan. 27, 2018	Jan. 28, 2017	Jul. 29, 2017	Jul. 30, 2016	Jul. 25, 2015
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash tax benefit realized from option exercises and stock vestings	$ 7,800
Proceeds from stock options exercised	$ 745		$ 1,449	$ 2,745	$ 8,922
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share Price	$ 119.30
Share based compensation intrinsic value	$ 4,500		7,800	15,000	24,900
Unrecognized compensation expense related to stock options	$ 2,800
Total compensation cost not yet recognized, period for recognition	2 years 6 months 1 day
Proceeds from stock options exercised	$ 700		$ 1,400	2,700	8,900
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to stock options	$ 8,600
Total compensation cost not yet recognized, period for recognition	2 years 6 months 1 day
Granted (in shares)	29,672
Forfeited or canceled (in shares)	2,357
Shares outstanding (in shares)	133,896		187,465
Share units vested (in shares)	80,884
Share based compensation vested in period		$ 37,700	$ 33,200	$ 39,100	$ 15,200
Performance RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense related to stock options	$ 18,300
Total compensation cost not yet recognized, period for recognition	1 year 11 months 1 day
Compensation expense	$ 7,900
RSUs outstanding (in shares)		99,627
Granted (in shares)	138,261
Forfeited or canceled (in shares)	29,350
Shares outstanding (in shares)	390,327		553,882
Share units vested (in shares)	272,466
Target Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares outstanding (in shares)		278,963
Supplemental Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Granted (in shares)		38,634
Forfeited or canceled (in shares)		21,139
Shares outstanding (in shares)		111,364