CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2020	Mar. 31, 2019		Mar. 31, 2018
Income Statement [Abstract]
Net revenue	$ 3,088,970	$ 2,668,394		$ 1,792,892
Cost of goods sold	1,542,450	1,523,644		898,311
Gross profit	1,546,520	1,144,750		894,581
Selling and marketing	458,424	391,400		256,092
General and administrative	318,235	281,234		247,828
Research and development	296,398	230,170		196,373
Depreciation and amortization	48,113	40,232		43,969
Business reorganization	83	(4,958)		14,742
Total operating expenses	1,121,253	938,078		759,004
Income from operations	425,267	206,672		135,577
Interest and other, net	38,505	26,113		1,048
Loss on long-term investments	5,333	0		0
Income before income taxes	458,439	232,785		136,625
Provision for (benefit from) income taxes	53,980	(101,052)		(36,908)
Net income	$ 404,459	$ 333,837	[1]	$ 173,533	[1]
Earnings per share:
Basic earnings per share (in dollars per share)	$ 3.58	$ 2.95		$ 1.57
Diluted earnings per share (in dollars per share)	$ 3.54	$ 2.90		$ 1.54

[1] Prior period amounts have been adjusted retrospectively to reflect the adoption of ASU 2016-18, Statement of Cash Flows (Topic 230): Restricted Cash. Refer to Note 1 for further discussion.