Net Loss Per Share - Computation of Net Loss Per Share, Basic and Diluted (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Jun. 30, 2022	Jun. 30, 2021
Numerator:
Net loss attributable to New Relic	$ (50,239)	$ (78,414)
Denominator:
Weighted-average shares used to compute net loss per share, basic (in shares)	66,421	63,339
Weighted-average shares used to compute net loss per share, diluted (in shares)	66,421	63,339
Net loss attributable to New Relic per share, basic (in usd per share)	$ (0.76)	$ (1.24)
Net loss attributable to New Relic per share, diluted (in usd per share)	$ (0.76)	$ (1.24)