CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands		3 Months Ended		6 Months Ended
		Feb. 01, 2020	Jan. 26, 2019	Feb. 01, 2020	Jan. 26, 2019
Income Statement [Abstract]
Net sales		$ 6,137,604	$ 6,149,206	$ 12,157,189	$ 9,017,362
Cost of sales		5,362,144	5,387,423	10,610,687	7,843,248
Gross profit		775,460	761,783	1,546,502	1,174,114
Operating expenses		750,845	751,922	1,526,259	1,115,087
Goodwill and asset impairment charges		0	370,871	425,405	370,871
Restructuring, acquisition and integration related expenses		29,686	47,125	43,936	115,129
Operating loss		(5,071)	(408,135)	(449,098)	(426,973)
Other expense (income):
Net periodic benefit income, excluding service cost		(3,277)	(10,906)	(14,661)	(11,750)
Interest expense, net		48,621	58,707	98,139	66,232
Other, net		(520)	(824)	(566)	(727)
Total other expense, net		44,824	46,977	82,912	53,755
Loss from continuing operations before income taxes		(49,895)	(455,112)	(532,010)	(480,728)
Benefit for income taxes		(17,728)	(91,809)	(91,481)	(96,064)
Net loss from continuing operations		(32,167)	(363,303)	(440,529)	(384,664)
Income from discontinued operations, net of tax		2,107	21,407	27,061	23,477	[1]
Net loss including noncontrolling interests		(30,060)	(341,896)	(413,468)	(361,187)
Less net (income) loss attributable to noncontrolling interests		(650)	171	(1,169)	168
Net loss attributable to United Natural Foods, Inc.		$ (30,710)	$ (341,725)	$ (414,637)	$ (361,019)
Basic (loss) earnings per share:
Continuing operations		$ (0.60)	$ (7.15)	$ (8.25)	$ (7.59)
Discontinued operations		0.03	0.42	0.49	0.46
Basic loss per share		(0.57)	(6.72)	(7.77)	(7.12)
Diluted (loss) earnings per share:
Continuing operations		(0.60)	(7.15)	(8.25)	(7.59)
Discontinued operations	[2]	0.03	0.42	0.48	0.46
Diluted loss per share		$ (0.57)	$ (6.72)	$ (7.77)	$ (7.12)
Weighted average shares outstanding:
Basic (shares)		53,523	50,815	53,368	50,699
Diluted (shares)		53,523	50,815	53,368	50,699

[1] These results reflect retail operations from the Supervalu acquisition date of October 22, 2018 to January 26, 2019.

[2] The computation of diluted earnings per share from discontinued operations is calculated using diluted weighted average shares outstanding, which includes the net effect of dilutive stock awards, of approximately 244 thousand shares and 107 thousand for the second quarters of fiscal 2020 and 2019, respectively, and 153 thousand and 353 thousand shares for fiscal 2020 and 2019 year-to-date, respectively.