CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Oct. 28, 2023	Oct. 29, 2022
Income Statement [Abstract]
Net sales	$ 7,552	$ 7,532
Cost of sales	6,522	6,436
Gross profit	1,030	1,096
Operating expenses	1,023	1,000
Restructuring, acquisition and integration related expenses	4	2
Loss (gain) on sale of assets and other asset charges	19	(5)
Operating (loss) income	(16)	99
Net periodic benefit income, excluding service cost	(3)	(7)
Interest expense, net	35	35
Other income, net	0	(1)
(Loss) income before income taxes	(48)	72
(Benefit) provision for income taxes	(9)	5
Net (loss) income including noncontrolling interests	(39)	67
Less net income attributable to noncontrolling interests	0	(1)
Net (loss) income attributable to United Natural Foods, Inc.	$ (39)	$ 66
Earnings Per Share
Basic (loss) earnings per share (in dollars per share)	$ (0.67)	$ 1.12
Diluted (loss) earnings per share (in dollars per share)	$ (0.67)	$ 1.07
Weighted average shares outstanding:
Basic (in shares)	58.7	58.8
Diluted (in shares)	58.7	61.6