Subsequent Events Subsequent Event (Details) - UNFI SUPERVALU Merger [Member]	Jun. 16, 2018 USD ($) $ / shares
Subsequent Event [Line Items]
Business Acquisition, Share Price \| $ / shares	$ 32.50
Proposed Business Acquisition, Termination Fee \| $	$ 40.5

Detail information of subsequent event by type. User is expected to use existing line items from elsewhere in the taxonomy as the primary line items for this disclosure, which is further associated with dimension and member elements pertaining to a subsequent event.

No definition available.

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