ACQUISITIONS - Schedule of Assets Acquired and Liabilities Assumed (Details) - USD ($) $ in Thousands						3 Months Ended	9 Months Ended
		Apr. 27, 2019		Oct. 27, 2018	Oct. 22, 2018	Jan. 26, 2019	Apr. 27, 2019		Jul. 28, 2018
Business Acquisition [Line Items]
Increase (decrease) to Other Assets and Intangible Assets						$ 23,700
Goodwill		$ 471,843					$ 471,843		$ 362,495
Goodwill, Acquired During Period							444,572
Reduction of long-term debt and capital lease obligations						$ 23,800
Supervalu
Business Acquisition [Line Items]
Cash and cash equivalents		25,102		$ 25,102			25,102
Accounts receivable		543,570		557,680			543,570
Inventories		1,162,175		1,162,360			1,162,175
Prepaid expenses and other current assets		69,850		66,440			69,850
Current assets of discontinued operations	[1]	204,917		196,615			204,917
Property, plant and equipment		1,209,486		1,148,001			1,209,486
Goodwill				347,485
Intangible assets(2)		923,099	[2]	1,077,541			923,099	[2]
Other assets(2)		77,266	[2]	109,445			77,266	[2]
Long-term assets of discontinued operations	[1]	439,235		404,301			439,235
Accounts payable		(973,394)		(967,429)			(973,394)
Other current liabilities		(327,619)		(282,692)			(327,619)
Current portion of long term debt and capital lease obligations		(579,566)		(579,677)			(579,566)
Current liabilities of discontinued operations	[1]	(150,690)		(150,611)			(150,690)
Long-term debt and capital lease obligations	[3]	(137,644)		(179,262)			(137,644)
Pension and other postretirement benefit obligations		(234,324)		(234,324)			(234,324)
Deferred income taxes		(74,254)		(177,231)			(74,254)
Other long-term liabilities	[3]	(299,598)		(200,913)			(299,598)
Long-term liabilities of discontinued operations	[1]	(753)		(1,401)			(753)
Total fair value of net assets acquired		2,321,430		2,321,430			2,321,430
Plus: noncontrolling interests		1,633		1,633			1,633
Less: cash and cash equivalents acquired	[4]	(30,596)		(30,596)
Less: assumed equity award liabilities		(18,638)		(18,638)
Plus: cash paid for equity awards		8,498		0
Total consideration paid in cash		2,282,327		2,273,829
Plus: unpaid assumed equity award liabilities	[5]	9,914		18,638
Total consideration		2,292,241		$ 2,292,467	$ 2,300,000
Wholesale
Business Acquisition [Line Items]
Goodwill		112,000					112,000
Wholesale | Operating Segments [Member]
Business Acquisition [Line Items]
Goodwill	[6]	$ 461,690					461,690		$ 352,342
Goodwill, Acquired During Period							$ 444,572

[1] Refer to Note 19. “Discontinued Operations” for additional information regarding the carrying value of discontinued operations within the Condensed Consolidated Balance Sheets.

[2] During the second quarter of fiscal 2019, the Company reclassified favorable operating lease intangible assets of $23.7 million from Other assets to Intangible assets within this table.

[3] During the second quarter of fiscal 2019, the Company reclassified residual financing obligations associated with build-to-suit properties for which the Company is not obligated to fund unless it is obligated under a future extension of a lease agreement. This reclassification resulted in a reduction of Long-term debt and capital lease obligations of $23.8 million, with an offsetting increase in Other long-term liabilities assumed within this table. If the terms of the respective leases are extended and a cash obligation for a portion of this residual value balance exists, the Company will present these contractual obligations within Long-term capital lease obligations within the Condensed Consolidated Balance Sheets.

[4] Includes cash and cash equivalents acquired attributable to continuing operations and discontinued operations.

[5] Includes equity consideration for share-based awards that have not yet been paid, which reflects non-cash consideration for the third quarter of fiscal 2019 that will become cash consideration in subsequent periods.

[6] Amounts are net of accumulated goodwill impairment charges of $0.0 million and $332.6 million as of July 28, 2018 and April 27, 2019, respectively.