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		6 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator:
Net loss attributable to New Relic	$ (46,775)	$ (53,769)	$ (97,014)	$ (132,183)
Denominator:
Weighted-average shares used to compute net loss per share, basic (in shares)	67,207	64,277	66,816	63,811
Weighted-average shares used to compute net loss per share, diluted (in shares)	67,207	64,277	66,816	63,811
Net loss attributable to New Relic per share, basic (in usd per share)	$ (0.70)	$ (0.84)	$ (1.45)	$ (2.07)
Net loss attributable to New Relic per share, diluted (in usd per share)	$ (0.70)	$ (0.84)	$ (1.45)	$ (2.07)