Condensed Consolidated Statements of Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Millions	3 Months Ended
Oct. 31, 2018	Oct. 31, 2017
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 34	$ (2)
Other comprehensive loss, net of income taxes:
Foreign currency translation loss	(4)	(7)
Total other comprehensive income (loss), net	(4)	(7)
Comprehensive income (loss)	$ 30	$ (9)

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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