INCOME TAXES (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	May 02, 2020	Apr. 27, 2019	May 02, 2020	Apr. 27, 2019
Income Tax Contingency [Line Items]
Effective Income Tax Rate, Continuing Operations, Percent	(38.70%)	(32.40%)	21.50%	22.80%
Effective Income Tax Rate Reconciliation, Deferred tax benefit	$ 26.9	$ 3.2
Effective Income Tax Rate Reconciliation, Revaluation of net operating loss deferred tax assets	28.4		$ 28.4
Effective Income Tax Rate Reconciliation, Release of unrecognized tax positions				$ 8.3
Effective Income Tax Rate Reconciliation, Goodwill impairment benefit			66.4	$ 72.2
Deferred Tax Assets, Operating Loss Carryforwards	$ 203.0		$ 203.0
CARES Act Federal Tax Rate for carryback losses			35.00%
Current Federal Income Tax Rate			21.00%