Consolidated Statements of Operations (Parenthetical) - USD ($) $ in Thousands	12 Months Ended
Mar. 31, 2019	Mar. 31, 2018	Mar. 31, 2017
Related Party Transaction [Line Items]
Related party	$ 254,127	$ 271,905	$ 346,139
Related party research and development	203,588	215,076	232,701
Related party selling and marketing	291,870	312,536	328,628
Related party general and administrative expense	93,572	109,479	118,438
Related party other income (expense), net	(434)	(3,776)	(1,716)
Affiliated Entity
Related Party Transaction [Line Items]
Related party research and development	20	3	1,624
Related party selling and marketing	0	2	2,423
Related party general and administrative expense	20	1,703	4,099
Related party other income (expense), net	0	56	426
Product
Related Party Transaction [Line Items]
Related party	140,938	158,628	233,275
Product \| Affiliated Entity
Related Party Transaction [Line Items]
Related party	0	245	7,229
Service
Related Party Transaction [Line Items]
Related party	113,189	113,277	112,864
Service \| Affiliated Entity
Related Party Transaction [Line Items]
Related party	$ 529	$ 665	$ 745

The aggregate cost of goods produced and sold and services rendered during the reporting period.

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-Name Accounting Standards Codification
-Topic 220
-SubTopic 10
-Section S99
-Paragraph 2
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The aggregate costs incurred (1) in a planned search or critical investigation aimed at discovery of new knowledge with the hope that such knowledge will be useful in developing a new product or service, a new process or technique, or in bringing about a significant improvement to an existing product or process; or (2) to translate research findings or other knowledge into a plan or design for a new product or process or for a significant improvement to an existing product or process whether intended for sale or the entity's use, during the reporting period charged to research and development projects, including the costs of developing computer software up to the point in time of achieving technological feasibility, and costs allocated in accounting for a business combination to in-process projects deemed to have no alternative future use.

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-Publisher FASB
-Name Accounting Standards Codification
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