CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) shares in Millions, $ in Millions	Total	Cumulative effect of change in accounting principle	Total United Natural Foods, Inc. Stockholders’ Equity	Total United Natural Foods, Inc. Stockholders’ Equity Cumulative effect of change in accounting principle	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Retained Earnings Cumulative effect of change in accounting principle	Noncontrolling Interests
Beginning balance (in shares) at Aug. 03, 2019					53.5
Beginning balance at Aug. 03, 2019	$ 1,504	$ 4	$ 1,507	$ 4	$ 1	$ (24)	$ 531	$ (109)	$ 1,108	$ 4	$ (3)
Treasury stock, beginning balance (in shares) at Aug. 03, 2019						0.6
Increase (Decrease) in Stockholders' Equity
Restricted stock vestings (in shares)					0.5
Restricted stock vestings	(1)		(1)				(1)
Share-based compensation	25		25				25
Other comprehensive income/loss	(130)		(130)					(130)
Distributions to noncontrolling interests	$ (5)										(5)
Proceeds from the issuance of common stock, net (in shares)	1.3				1.3
Proceeds from issuance of common stock, net	$ 14		14				14
Net (loss) income	(269)		(274)						(274)
Ending balance (in shares) at Aug. 01, 2020					55.3
Ending balance at Aug. 01, 2020	1,142	$ (9)	1,145	$ (9)	$ 1	$ (24)	569	(239)	838	$ (9)	(3)
Treasury stock, ending balance (in shares) at Aug. 01, 2020						0.6
Increase (Decrease) in Stockholders' Equity
Restricted stock vestings (in shares)					1.6
Restricted stock vestings	(14)		(14)				(14)
Share-based compensation	45		45				45
Other comprehensive income/loss	200		200					200
Distributions to noncontrolling interests	(4)										(4)
Proceeds from the issuance of common stock, net (in shares)					0.1
Proceeds from issuance of common stock, net	1		1				1
Acquisition of noncontrolling interests	(2)		(2)				(2)
Net (loss) income	$ 155		149						149		6
Ending balance (in shares) at Jul. 31, 2021	56.4				57.0
Ending balance at Jul. 31, 2021	$ 1,514		1,515		$ 1	$ (24)	599	(39)	978		(1)
Treasury stock, ending balance (in shares) at Jul. 31, 2021						0.6
Increase (Decrease) in Stockholders' Equity
Restricted stock vestings (in shares)					1.7
Restricted stock vestings	(41)		(41)				(41)
Share-based compensation	44		44				44
Other comprehensive income/loss	19		19					19
Distributions to noncontrolling interests	(4)										(4)
Proceeds from the issuance of common stock, net (in shares)					0.2
Proceeds from issuance of common stock, net	8		8				8
Acquisition of noncontrolling interests	(2)		(2)				(2)
Net (loss) income	$ 254		248						248		6
Ending balance (in shares) at Jul. 30, 2022	58.3				58.9
Ending balance at Jul. 30, 2022	$ 1,792		$ 1,791		$ 1	$ (24)	$ 608	$ (20)	$ 1,226		$ 1
Treasury stock, ending balance (in shares) at Jul. 30, 2022						0.6