CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands		12 Months Ended
		Aug. 01, 2020		Aug. 03, 2019	Jul. 28, 2018
Statement of Comprehensive Income [Abstract]
Net (loss) income including noncontrolling interests		$ (269,211)	[1]	$ (284,623)	$ 162,777
Other comprehensive (loss) income:
Recognition of pension and other postretirement benefit obligations, net of tax	[2]	(82,838)		(32,458)	0
Recognition of interest rate swap cash flow hedges, net of tax	[3]	(44,751)		(61,287)	3,575
Foreign currency translation adjustments		(1,337)		(1,029)	(3,791)
Recognition of other cash flow derivatives, net of tax		(67)		0	0
Total other comprehensive (loss) income		(128,993)		(94,774)	(216)
Less comprehensive income attributable to noncontrolling interests		(4,929)		(107)	0
Total comprehensive (loss) income attributable to United Natural Foods, Inc.		$ (403,133)		$ (379,504)	$ 162,561

[1] Fiscal 2020 results reflect 52 weeks of operating results, as compared to fiscal 2019 53 weeks. The fourth quarter of fiscal 2020 includes 13 weeks and the fourth quarter of fiscal 2019 contains 14 weeks.

[2] Amounts are net of tax (benefit) expense of $(29.3) million, $(11.3) million and $0.0 million for the fiscal years ended August 1, 2020, August 3, 2019 and July 28, 2018, respectively.

[3] Amounts are net of tax (benefit) expense of $(16.4) million, $(22.5) million and 1.5 million for the fiscal years ended August 1, 2020, August 3, 2019 and July 28, 2018, respectively.