XML 83 R62.htm IDEA: XBRL DOCUMENT
v3.19.3

RESTRUCTURING, ACQUISITION AND INTEGRATION RELATED EXPENSES - Closed Property Reserves (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Aug. 03, 2019 | Jul. 28, 2018 | Jul. 29, 2017
Restructuring Cost and Reserve [Line Items] |  |  |
Acquired liabilities | $ 12,573 |  |
Payments | (75,130) | $ (5,433) |
Facility Closing |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |
Beginning balance | 0 | 0 | $ 443
Acquired liabilities | 34,581 | 0 | 0
Additions, accretion and changes in estimates, net | 16,529 | 1,400 | 258
Payments | (22,467) | (1,400) | (701)
Ending balance | $ 28,643 | $ 0 | $ 0

X
- Definition Additions, accretion, and changes in estimates + References No definition available. + Details
Name: | unfi_Additionsaccretionandchangesinestimates
Namespace Prefix: | unfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Closed Property Reserve + References No definition available. + Details
Name: | unfi_ClosedPropertyReserve
Namespace Prefix: | unfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Restructuring Reserve Acquired + References No definition available. + Details
Name: | unfi_RestructuringReserveAcquired
Namespace Prefix: | unfi_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of cash payments made as the result of exit or disposal activities. Excludes payments associated with a discontinued operation or an asset retirement obligation. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 17 -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=118932676&loc=d3e3367-108585 + Details
Name: | us-gaap_PaymentsForRestructuring
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- 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. + References No definition available. + Details
Name: | us-gaap_RestructuringCostAndReserveLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RestructuringCostAndReserveAxis=us-gaap_FacilityClosingMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |