CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Apr. 29, 2023	Apr. 30, 2022	Apr. 29, 2023	Apr. 30, 2022
Income Statement [Abstract]
Net sales	$ 7,507	$ 7,242	$ 22,855	$ 21,655
Cost of sales	6,507	6,230	19,690	18,526
Gross profit	1,000	1,012	3,165	3,129
Operating expenses	967	969	2,969	2,845
Restructuring, acquisition and integration related (benefits) expenses	(4)	8	1	16
Loss (gain) on sale of assets	4	(88)	0	(87)
Operating income	33	123	195	355
Net periodic benefit income, excluding service cost	(8)	(10)	(22)	(30)
Interest expense, net	35	37	109	121
Other income, net	(1)	(1)	(2)	(2)
Income before income taxes	7	97	110	266
(Benefit) provision for income taxes	(1)	29	13	53
Net income including noncontrolling interests	8	68	97	213
Less net income attributable to noncontrolling interests	(1)	(1)	(5)	(4)
Net income attributable to United Natural Foods, Inc.	$ 7	$ 67	$ 92	$ 209
Earnings Per Share
Basic earnings per share (in dollars per share)	$ 0.12	$ 1.15	$ 1.55	$ 3.62
Diluted earnings per share (in dollars per share)	$ 0.12	$ 1.10	$ 1.51	$ 3.44
Weighted average shares outstanding:
Basic (in shares)	59.4	58.4	59.3	57.9
Diluted (in shares)	60.4	60.9	61.0	61.0