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RETIREMENT PLANS (Details) - USD ($)	12 Months Ended
	Jul. 28, 2018	Jul. 29, 2017	Jul. 30, 2016
Deferred Stock Plan | Minimum
Retirement Plans
Percentage of awards to be deferred by participants	0.00%
Deferred Stock Plan | Maximum
Retirement Plans
Percentage of awards to be deferred by participants	100.00%
Deferred Compensation Plan
Retirement Plans
Entity's contribution to Retirement Plan	$ 11,600,000	$ 10,100,000	$ 7,300,000
Minimum amount of awards to be deferred by participants	$ 1,000
Maximum percentage of base salary to be deferred by participants	90.00%
Maximum percentage of director fees, employee bonuses and commissions to be deferred by participants	100.00%
Deferred Compensation Plan | Maximum
Retirement Plans
Percentage of awards to be deferred by participants	100.00%
Multiemployer Plan, Individually Insignificant Multiemployer Plans [Member]
Retirement Plans
Multiemployer Plan, Contributions by Employer	$ 500,000
Multiemployer Plans, Withdrawal Obligation	$ 3,400,000
Deferred Compensation and Supplemental Retirement Plans [Member]
Retirement Plans
Discount rate for recording future obligations (as a percent)	5.70%
Cash surrender value of purchased whole-life insurance policies	$ 22,900,000	$ 21,500,000
Future obligations under deferred compensation arrangement
2019	1,147,000
2020	940,000
2021	785,000
2022	766,000
2023	721,000
2024 and thereafter	2,349,000
Total future obligations including interest, under deferred compensation arrangement	$ 6,708,000

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- Definition

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The total amount of the benefits expected to be paid.

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- Definition

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- Definition

Weighted average rate for present value of future retirement benefits cash flows, used to determine benefit obligation of defined benefit plan.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 715
-SubTopic 20
-Section 50
-Paragraph 1
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Amount of future annual benefits of participant covered by insurance contract. Includes, but is not limited to, contract issued by employer or its related parties.

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Amount of benefits for defined benefit plan expected to be paid in five fiscal years after fifth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fifth fiscal year following latest fiscal year.

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Amount of benefits for defined benefit plan expected to be paid in fourth fiscal year following latest fiscal year.

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Amount of the obligation recognized by withdrawing from a pension or postretirement benefit plan to which two or more unrelated employers contribute where assets contributed by one participating employer may be used to provide benefits to employees of other participating employers.

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