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SHARE-BASED AWARDS (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended			6 Months Ended
	Jan. 26, 2019	Oct. 27, 2018	Jan. 27, 2018	Jan. 26, 2019	Jan. 27, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Conversion Cost of Shares from Supervalu Plan to Replacement Award Plan	$ 32.50
Additional Shares Authorized	5,000,000
Share-based compensation expense	$ 10.4		$ 6.6	$ 18.5	$ 13.8
Income tax benefit for share-based compensation expense	2.7		$ 1.5	$ 4.6	$ 3.7
Vesting period				3 years
Unrecognized compensation costs	$ 79.8			$ 79.8
Weighted-average period of unrecognized compensation cost	2 years 4 months 28 days
Share-based compensation charge	$ 6.6
Supervalu
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense	4.2			4.8
Unrecognized compensation costs	40.0			$ 40.0
Restructuring, Settlement and Impairment Provisions [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Charges for the settlement of share-based awards recorded as part of restructuring costs	$ 25.2
Change-in-control payments		$ 20.6
33.33% vest in year one
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage				33.33%
33.33% vest in year two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage				33.33%
33.33% vest in year three
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage				33.33%

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Conversion Cost of Shares from Supervalu Plan to Replacement Award Plan

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Share-based Compensation Arrangement by Share-based Payment Award Accelerated Compensation Cost, Change In Control

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Amount of increase in additional paid in capital (APIC) resulting from a tax benefit associated with share-based compensation plan other than an employee stock ownership plan (ESOP). Includes, but is not limited to, excess tax benefit.

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Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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Unrecognized cost of unvested share-based compensation awards.

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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.

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Additional share-based compensation cost recognized as a result of an occurrence of an event that accelerates its recognition.

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Period 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, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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Number of additional shares authorized for issuance under an established share-based compensation plan.

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Percentage of vesting of share-based compensation awards.

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Amount of capitalized and expensed compensation cost from equity-based compensation arrangements.

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