Amount of short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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The cash inflow associated with principal collections from a borrowing supported by a written promise to pay an obligation.

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RELATED PARTY INFORMATION - WAKEFERN (Details) - USD ($) $ in Thousands	6 Months Ended
	Jan. 26, 2019	Jan. 27, 2018	Jul. 28, 2018
Related Party Transaction [Line Items]
Increase of required investment in Wakefern common stock	$ 1,482
Proceeds from Sale, Maturity and Collection of Long-term Investments	0	$ 22,172
Investee [Member]
Related Party Transaction [Line Items]
Due from Related Parties	48,612
Demand deposits at Wakefern	$ 86,261		$ 63,413
Related Party Note Receivable Maturing February 2019 And August 2022 [Member] \| Investee [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Basis Spread on Variable Rate	1.25%
Related Party Note Receivable Maturing February 2019 [Member] \| Investee [Member]
Related Party Transaction [Line Items]
Due from Related Parties	$ 24,870
Related Party Note Receivable Maturing August 2022 [Member] \| Investee [Member]
Related Party Transaction [Line Items]
Due from Related Parties	23,742
Related Party Note Receivable Maturing February 2019 And February 2024 [Member] \| Investee [Member]
Related Party Transaction [Line Items]
Proceeds from Collection of Notes Receivable	$ 24,937
Related Party Note Receivable Maturing February 2024 [Member] \| Investee [Member]
Related Party Transaction [Line Items]
Related Party Transaction, Basis Spread on Variable Rate	0.75%