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United States Bankruptcy Court where petition for bankruptcy was filed.

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Amount of direct costs of the business combination including legal, accounting, and other costs incurred to consummate the business acquisition.

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Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

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The total amount of the contingent obligation under letters of credit outstanding as of the reporting date.

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The number of businesses acquired by the entity during the period.

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Date the plan of reorganization is approved by the bankruptcy court, in CCYY-MM-DD format.

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Commitments and Contingencies and Off Balance Sheet Arrangements - Guarantees (Detail) $ in Thousands		3 Months Ended	12 Months Ended
	Mar. 29, 2016 USD ($) Stores	Apr. 30, 2015 USD ($) Stores	Feb. 25, 2017 USD ($)	Dec. 02, 2017 USD ($)	Apr. 30, 2016 USD ($)	Feb. 27, 2016 USD ($)	Feb. 28, 2015 USD ($)
California Department of Industrial Relations [Member]
Commitments and Contingencies Disclosure [Abstract]
Outstanding balance on letters of credit			$ 237,600	$ 205,600		$ 247,700
Haggen
Commitments and Contingencies Disclosure [Abstract]
Number of store properties assigned to Haggen			In connection with FTC-mandated divestitures, the Company assigned leases with respect to 93 store properties to Haggen.
Date Haggen commenced bankruptcy			Sep. 08, 2015
Bankruptcy court			United States Bankruptcy Court for the District of Delaware
Date Haggen secured Bankruptcy court approval			Oct. 19, 2015
Number of acquired store \| Stores		19
Aggregate purchase price		$ 10,700
Total Loss contingent Liability			$ 32,200		$ 1,600	$ 5,750	$ 30,600
Number of stores acquired \| Stores	29
Total purchase consideration	$ 113,800