Condensed Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Net revenue:
Product	$ 828	$ 684
Service and other	621	587
Total net revenue	1,449	1,271
Cost of revenue:
Product	64	90
Service and other	90	89
Total cost of revenue	154	179
Gross profit	1,295	1,092
Operating expenses:
Research and development	325	294
Marketing and sales	121	128
General and administrative	105	108
Amortization of intangibles	1	2
Total operating expenses	552	532
Operating income	743	560
Interest and other income (expense), net	6	(8)
Income before provision for income taxes	749	552
Provision for income taxes	105	112
Net income	$ 644	$ 440
Earnings per share:
Basic	$ 2.08	$ 1.46
Diluted	$ 2.06	$ 1.40
Number of shares used in computation:
Basic	309	301
Diluted	313	315