Condensed Consolidated Statements Of Operations - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2020	Dec. 31, 2019
Net revenue	$ 1,673	$ 1,593	$ 4,283	$ 4,150
Cost of revenue	601	508	1,175	1,100
Gross profit	1,072	1,085	3,108	3,050
Operating expenses:
Research and development	451	389	1,310	1,157
Marketing and sales	216	202	493	464
General and administrative	149	126	418	364
Acquisition-related contingent consideration	0	2	0	5
Amortization of intangibles	5	5	16	16
Total operating expenses	821	724	2,237	2,006
Operating income (loss)	251	361	871	1,044
Interest and other income (expense), net	(6)	13	(19)	50
Income before provision for income taxes	245	374	852	1,094
Provision for income taxes	34	28	91	(1,527)
Net income (loss)	$ 211	$ 346	$ 761	$ 2,621
Earnings (loss) per share:
Earnings Per Share, Basic	$ 0.73	$ 1.18	$ 2.63	$ 8.91
Earnings Per Share, Diluted	$ 0.72	$ 1.18	$ 2.61	$ 8.85
Number of shares used in computation:
Basic	290	292	289	294
Diluted	292	294	292	296