CONDENSED CONSOLIDATED STATEMENT OF COMPREHENSIVE (LOSS) INCOME - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
		May 02, 2020	Apr. 27, 2019	May 02, 2020	Apr. 27, 2019
Statement of Comprehensive Income [Abstract]
Net income (loss) including noncontrolling interests		$ 90,369	$ 57,144	$ (323,099)	$ (304,043)
Other comprehensive (loss) income:
Recognition of pension and other postretirement benefit obligations, net of tax	[1]	(574)	0	7,368	0
Recognition of interest rate swap cash flow hedges, net of tax	[2]	(39,066)	(16,196)	(46,499)	(26,898)
Foreign currency translation adjustments		(3,585)	(1,326)	(3,561)	(2,308)
Total other comprehensive loss		(43,225)	(17,522)	(42,692)	(29,206)
Less comprehensive (income) loss attributable to noncontrolling interests		(2,238)	(52)	(3,407)	116
Total comprehensive income (loss) attributable to United Natural Foods, Inc.		$ 44,906	$ 39,570	$ (369,198)	$ (333,133)

[1] Amounts are net of tax (benefit) expense of $(0.2) million, $0.0 million, $2.4 million and $0.0 million, respectively.

[2] Amounts are net of tax (benefit) expense of $(13.4) million, $(6.0) million, $(15.9) million and $(9.9) million, respectively.