CONDENSED CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (unaudited) - USD ($) shares in Millions, $ in Millions	Total	Total United Natural Foods, Inc. Stockholders’ Equity	Common Stock	Treasury Stock	Additional Paid-in Capital	Accumulated Other Comprehensive Loss	Retained Earnings	Noncontrolling Interests
Beginning balance (in shares) at Jul. 31, 2021			57.0	0.6
Beginning balance at Jul. 31, 2021	$ 1,514	$ 1,515	$ 1	$ (24)	$ 599	$ (39)	$ 978	$ (1)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock vestings (in shares)			1.7
Restricted stock vestings	(33)	(33)			(33)
Share-based compensation	11	11			11
Other comprehensive income	15	15				15
Distributions to noncontrolling interests	(2)							(2)
Proceeds from issuance of common stock, net	5	5			5
Net income	77	76					76	1
Ending balance (in shares) at Oct. 30, 2021			58.7	0.6
Ending balance at Oct. 30, 2021	$ 1,587	1,589	$ 1	$ (24)	582	(24)	1,054	(2)
Beginning balance (in shares) at Jul. 30, 2022	58.3		58.9	0.6
Beginning balance at Jul. 30, 2022	$ 1,792	1,791	$ 1	$ (24)	608	(20)	1,226	1
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock vestings (in shares)			2.0
Restricted stock vestings	(37)	(37)			(37)
Share-based compensation	$ 12	12			12
Repurchases of common stock (in shares)	0.4
Repurchases of common stock	$ (12)
Other comprehensive income	15	15				15
Distributions to noncontrolling interests	(2)							(2)
Net income	$ 67	66					66	1
Ending balance (in shares) at Oct. 29, 2022	59.9		60.9	1.0
Ending balance at Oct. 29, 2022	$ 1,835	$ 1,835	$ 1	$ (36)	$ 583	$ (5)	$ 1,292	$ 0