Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 55
-Paragraph 37
-URI http://asc.fasb.org/extlink&oid=84160947&loc=d3e2207-128464

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BUSINESS ACQUISITIONS - Intangible Assets Recognized as Part of Acquisition (Details) - USD ($) $ in Millions	Dec. 08, 2017	Jun. 23, 2017
Unified Grocers, Inc. [Member]
Business Acquisition [Line Items]
Amounts Acquired		$ 56
AG Florida
Business Acquisition [Line Items]
Amounts Acquired	$ 52
Customer relationships and supply agreements \| Unified Grocers, Inc. [Member]
Business Acquisition [Line Items]
Estimated Useful Life (in years)		15 years
Amounts Acquired		$ 41
Customer relationships and supply agreements \| AG Florida
Business Acquisition [Line Items]
Estimated Useful Life (in years)	15 years
Amounts Acquired	$ 47
Favorable operating leases \| Unified Grocers, Inc. [Member]
Business Acquisition [Line Items]
Amounts Acquired		$ 7
Favorable operating leases \| AG Florida
Business Acquisition [Line Items]
Amounts Acquired	$ 5
Trade names \| Unified Grocers, Inc. [Member]
Business Acquisition [Line Items]
Estimated Useful Life (in years)		14 years
Amounts Acquired		$ 8
Minimum \| Favorable operating leases \| Unified Grocers, Inc. [Member]
Business Acquisition [Line Items]
Estimated Useful Life (in years)		3 years
Minimum \| Favorable operating leases \| AG Florida
Business Acquisition [Line Items]
Estimated Useful Life (in years)	2 years
Maximum \| Favorable operating leases \| Unified Grocers, Inc. [Member]
Business Acquisition [Line Items]
Estimated Useful Life (in years)		14 years
Maximum \| Favorable operating leases \| AG Florida
Business Acquisition [Line Items]
Estimated Useful Life (in years)	5 years