Consolidated Statements of Stockholders' Equity - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Common Stock	Additional Paid-In Capital	Additional Paid-In Capital Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock	Accumulated Other Comprehensive Income (Loss)	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment
Beginning balance (in shares) at Mar. 31, 2019			58,366			260
Beginning balance at Mar. 31, 2019	$ 349,630		$ 58	$ 654,759		$ (263)	$ 645	$ (305,569)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)			502
Issuance of common stock upon exercise of stock options	11,632		$ 1	11,631
Issuance of common stock for vested restricted stock units (in shares)			960
Issuance of common stock for vested restricted stock units	0		$ 1	(1)
Issuance of common stock related to employee stock purchase plan (in shares)			270
Issuance of common stock related to employee stock purchase plan	13,603			13,603
Stock-based compensation expense	100,487			100,487
Other comprehensive income (loss), net	4,224						4,224
Net loss attributable to New Relic	(88,937)							(88,937)
Ending balance (in shares) at Mar. 31, 2020			60,098			260
Ending balance at Mar. 31, 2020	$ 390,639		$ 60	780,479		$ (263)	4,869	(394,506)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Accounting Standards Update [Extensible Enumeration]	Accounting Standards Update 2020-06
Issuance of common stock upon exercise of stock options (in shares)			462
Issuance of common stock upon exercise of stock options	$ 6,865		$ 0	6,865
Issuance of common stock for vested restricted stock units (in shares)			1,536
Issuance of common stock for vested restricted stock units	0		$ 2	(2)
Issuance of common stock related to employee stock purchase plan (in shares)			302
Issuance of common stock related to employee stock purchase plan	14,425			14,425
Issuance of common stock related to acquisition of business (in shares)			1,621
Issuance of common stock related to acquisition of business	62,367		$ 2	62,365
Stock-based compensation expense	137,177			137,177
Other comprehensive income (loss), net	(4,888)						(4,888)
Net loss attributable to New Relic	(192,610)							(192,610)
Ending balance (in shares) at Mar. 31, 2021			64,019			260
Ending balance at Mar. 31, 2021	$ 413,975	$ (45,926)	$ 64	1,001,309	$ (100,136)	$ (263)	(19)	(587,116)	$ 54,210
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock upon exercise of stock options (in shares)	848		848
Issuance of common stock upon exercise of stock options	$ 31,868		$ 1	31,867
Issuance of common stock for vested restricted stock units (in shares)			1,505
Issuance of common stock for vested restricted stock units	0		$ 1	(1)
Issuance of common stock related to employee stock purchase plan (in shares)			214
Issuance of common stock related to employee stock purchase plan	12,272			12,272
Issuance of common stock related to acquisition of business (in shares)			402
Issuance of common stock related to acquisition of business	13,487			13,487
Stock-based compensation expense	155,423			155,423
Other comprehensive income (loss), net	(7,993)						(7,993)
Net loss attributable to New Relic	(250,402)							(250,402)
Ending balance (in shares) at Mar. 31, 2022			66,988			260
Ending balance at Mar. 31, 2022	$ 322,704		$ 66	$ 1,114,221		$ (263)	$ (8,012)	$ (783,308)