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Selected Quarterly Financial Data (Unaudited)
 12 Months Ended
Jul. 31, 2018
Quarterly Financial Information Disclosure [Abstract]  
Selected Quarterly Financial Data (Unaudited)
15. Selected Quarterly Financial Data (Unaudited)
The following tables contain selected quarterly financial data for the twelve months ended July 31, 2018 and July 31, 2017.
 
Fiscal 2018 Quarter Ended
(In millions, except per share amounts)
October 31
 
January 31
 
April 30
 
July 31
Total net revenue
$
886

 
$
1,165

 
$
2,925

 
$
988

Cost of revenue
196

 
246

 
304

 
231

All other costs and expenses
747

 
899

 
1,006

 
838

Operating income (loss)
(57
)
 
20

 
1,615

 
(81
)
Net income (loss)
(17
)
 
(21
)
 
1,200

 
49

 
 
 
 
 
 
 
 
Basic net income (loss) per share
$
(0.07
)
 
$
(0.08
)
 
$
4.68

 
$
0.19

 
 
 
 
 
 
 
 
Diluted net income (loss) per share
$
(0.07
)
 
$
(0.08
)
 
$
4.59

 
$
0.18



 
Fiscal 2017 Quarter Ended
(In millions, except per share amounts)
October 31
 
January 31
 
April 30
 
July 31
Total net revenue
$
778

 
$
1,016

 
$
2,541

 
$
842

Cost of revenue
183

 
206

 
237

 
183

All other costs and expenses
656

 
788

 
860

 
669

Operating income (loss) from continuing operations
(61
)
 
22

 
1,444

 
(10
)
Net income (loss)
(30
)
 
13

 
964

 
24

 
 
 
 
 
 
 
 
Basic net income (loss) per share
$
(0.12
)
 
$
0.05

 
$
3.76

 
$
0.09

 
 
 
 
 
 
 
 
Diluted net income (loss) per share
$
(0.12
)
 
$
0.05

 
$
3.70

 
$
0.09