Condensed Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Net revenue	$ 1,209	$ 1,137
Cost of revenue	187	215
Gross profit	1,022	922
Operating expenses:
Research and development	381	362
Marketing and sales	110	140
General and administrative	110	114
Acquisition-related contingent consideration	1	0
Amortization of intangibles	5	6
Total operating expenses	607	622
Operating income (loss)	415	300
Interest and other income (expense), net	21	19
Income before provision for income taxes	436	319
Provision for income taxes	(985)	26
Net income (loss)	$ 1,421	$ 293
Earnings (loss) per share:
Earnings Per Share, Basic	$ 4.78	$ 0.96
Earnings Per Share, Diluted	$ 4.75	$ 0.95
Number of shares used in computation:
Basic	297	306
Diluted	299	310
Product [Member]
Net revenue	$ 166	$ 202
Cost of revenue	35	68
Service [Member]
Net revenue	1,043	935
Cost of revenue	$ 152	$ 147