CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018
Income Statement [Abstract]
Net revenue	$ 930,129	$ 1,248,738	$ 2,328,429	$ 2,129,387
Cost of goods sold	437,093	898,484	1,146,810	1,264,730
Gross profit	493,036	350,254	1,181,619	864,657
Selling and marketing	137,068	161,322	378,455	313,793
General and administrative	84,531	70,638	236,023	205,693
Research and development	82,520	62,305	227,680	173,582
Depreciation and amortization	12,330	10,140	35,611	29,151
Business reorganization	(246)	(5,930)	467	(6,172)
Total operating expenses	316,203	298,475	878,236	716,047
Income from operations	176,833	51,779	303,383	148,610
Interest and other, net	11,943	8,071	30,422	19,647
Income before income taxes	188,776	59,850	333,805	168,257
Provision for (benefit from) income taxes	25,134	(120,098)	52,068	(108,750)
Net income	$ 163,642	$ 179,948	$ 281,737	$ 277,007
Earnings per share:
Basic earnings per share (in dollars per share)	$ 1.44	$ 1.59	$ 2.49	$ 2.44
Diluted earnings per share (in dollars per share)	$ 1.43	$ 1.57	$ 2.47	$ 2.41