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OVERVIEW AND BASIS OF PRESENTATION (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Apr. 30, 2019	Apr. 30, 2018	Apr. 30, 2019	Apr. 30, 2018	Jul. 31, 2018
Concentration Risk [Line Items]
Operating lease, liability (in excess)	$ 175		$ 175
Partner Concentration Risk | Revenue | Partner A
Concentration Risk [Line Items]
Concentration risk percentage			10.00%	10.00%
Partner Concentration Risk | Revenue | Partner B
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	15.00%	11.00%	20.00%
Partner Concentration Risk | Revenue | Partner C
Concentration Risk [Line Items]
Concentration risk percentage	26.00%	18.00%	23.00%	17.00%
Partner Concentration Risk | Revenue | Partner D
Concentration Risk [Line Items]
Concentration risk percentage				10.00%
Partner Concentration Risk | Revenue | Partner F
Concentration Risk [Line Items]
Concentration risk percentage	13.00%	13.00%	12.00%	13.00%
Partner Concentration Risk | Accounts Receivable | Partner A
Concentration Risk [Line Items]
Concentration risk percentage					16.00%
Partner Concentration Risk | Accounts Receivable | Partner B
Concentration Risk [Line Items]
Concentration risk percentage					13.00%
Partner Concentration Risk | Accounts Receivable | Partner C
Concentration Risk [Line Items]
Concentration risk percentage			25.00%		15.00%
Partner Concentration Risk | Accounts Receivable | Partner F
Concentration Risk [Line Items]
Concentration risk percentage			13.00%		12.00%

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Present value of lessee's discounted obligation for lease payments from operating lease.

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