CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		Apr. 27, 2019	Apr. 28, 2018	Apr. 27, 2019	Apr. 28, 2018
Statement of Comprehensive Income [Abstract]
Net income (loss) including noncontrolling interests		$ 57,144	$ 51,891	$ (304,043)	$ 132,882
Other comprehensive (loss) income:
Recognition of interest rate swap cash flow hedges	[1]	(16,196)	729	(26,898)	3,649
Foreign currency translation adjustments		(1,326)	(3,159)	(2,308)	(2,320)
Total other comprehensive (loss) income		(17,522)	(2,430)	(29,206)	1,329
Less comprehensive (income) loss attributable to noncontrolling interests		52	0	(116)	0
Total comprehensive income (loss) attributable to United Natural Foods, Inc.		$ 39,570	$ 49,461	$ (333,133)	$ 134,211

[1] Amounts are net of tax (benefit) expense of $(6.0) million and $0.3 million for the 13-week periods ended April 27, 2019 and April 28, 2018, respectively, and $(9.9) million and $1.6 million for the 39-week periods ended April 27, 2019 and April 28, 2018, respectively.