INCOME TAXES (Details) - USD ($) $ in Millions	12 Months Ended
	Aug. 03, 2019	Jul. 28, 2018	Jul. 29, 2017
Operating Loss Carryforwards [Line Items]
Income (loss) from continuing operations before income taxes, domestic	$ (442.3)	$ 205.3	$ 211.5
Income (loss) from continuing operations before income taxes, foreign	7.0	7.4	2.9
Payments to government agencies	14.0
Total accrued interest and penalties	15.6	$ 0.1	$ 0.1
Possible decrease in amount of unrecognized tax benefits	1.0
Operating loss carryforwards subject to annual limitation	2.3
Operating loss carryforwards available for unlimited carryforward	211.5
Disallowed interest expense carryforwards	$ 37.8
Effective income tax rate for continuing operations (as a percent)	19.44%	22.13%	39.30%
Income tax expense related to excess tax deficiencies	$ 1.6	$ 1.1
Internal Revenue Service (IRS)
Operating Loss Carryforwards [Line Items]
Operating loss carryforwards	213.8
Operating loss carryforward limitation	$ 0.3