CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (unaudited) - USD ($) $ in Millions		3 Months Ended
		Oct. 29, 2022	Oct. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income including noncontrolling interests		$ 67	$ 77
Other comprehensive income (loss):
Recognition of pension and other postretirement benefit obligations, net of tax		0	1
Recognition of interest rate swap cash flow hedges, net of tax	[1]	18	13
Foreign currency translation adjustments		(3)	0
Recognition of other cash flow derivatives, net of tax		0	1
Total other comprehensive income		15	15
Less comprehensive income attributable to noncontrolling interests		(1)	(1)
Total comprehensive income attributable to United Natural Foods, Inc.		$ 81	$ 91

[1] Amounts are net of tax expense of $6 million and $4 million for the first quarters of fiscal 2023 and fiscal 2022, respectively.