SHARE-BASED COMPENSATION - Summary of Company's Award Activity (Details) - $ / shares	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
RSU
Non-options Activity
Unvested RSU awards outstanding, beginning of fiscal year (in shares)	17,019,559	17,308,625	16,050,640
Granted (in shares)	8,416,650	7,276,643	10,982,109
Vested (in shares)	(9,229,198)	(5,933,605)	(5,520,005)
Forfeited (in shares)	(858,396)	(1,632,104)	(4,204,119)
Unvested RSU awards outstanding, end of fiscal year (in shares)	15,348,615	17,019,559	17,308,625
Non-options Activity, Weighted Average Exercise Price
Unvested RSU awards outstanding, weighted average grant-date fair value, beginning of period (in dollars per share)	$ 14.13	$ 11.14	$ 11.87
Average grant date fair value (in dollars per share)	18.22	18.48	11.04
Vested, weighted average grant-date fair value (in dollars per share)	12.51	10.87	11.64
Forfeited, weighted average grant-date fair value (in dollars per share)	15.31	12.42	11.92
Unvested RSU awards outstanding, weighted average grant-date fair value, end of period (in dollars per share)	$ 16.79	$ 14.13	$ 11.14
RSU With Market Conditions
Non-options Activity
Granted (in shares)	500,000
Unvested RSU awards outstanding, end of fiscal year (in shares)	2,080,960
Non-options Activity, Weighted Average Exercise Price
Unvested RSU awards outstanding, weighted average grant-date fair value, end of period (in dollars per share)	$ 23.45
RSU With Market Conditions | Minimum
Non-options Activity, Weighted Average Exercise Price
Vesting range on measurement of share-based compensation	0.00%
RSU With Market Conditions | Maximum
Non-options Activity, Weighted Average Exercise Price
Vesting range on measurement of share-based compensation	200.00%
RSU With Market Conditions | Grant In Fiscal Year 2020
Non-options Activity
Granted (in shares)	1,200,000
Option | 2022 Nextracker Equity Incentive Plan
Option Activity
Outstanding, beginning of fiscal year, Options (in shares)	0
Granted (in shares)	2,806,905
Vested (in shares)	0
Forfeited, Options (in shares)	(114,286)
Outstanding, end of fiscal year, Options (in shares)	2,692,619	0
Options Activity, Weighted Average Exercise Price
Outstanding, beginning of fiscal year, Price (in dollars per share)	$ 0
Granted, Price (in dollars per share)	6.30
Vested, Price (in dollars per share)	0
Forfeited, Price (in dollars per share)	6.30
Outstanding, end of fiscal year, Price (in dollars per share)	$ 6.30	$ 0
Option | 2022 Nextracker Equity Incentive Plan | Minimum
Non-options Activity, Weighted Average Exercise Price
Vesting range on measurement of share-based compensation	0.00%
Option | 2022 Nextracker Equity Incentive Plan | Maximum
Non-options Activity, Weighted Average Exercise Price
Vesting range on measurement of share-based compensation	100.00%
RSU With Performance Conditions
Non-options Activity
Unvested RSU awards outstanding, end of fiscal year (in shares)	912,532
RSU With Performance Conditions | Minimum
Non-options Activity, Weighted Average Exercise Price
Vesting range on measurement of share-based compensation	0.00%
RSU With Performance Conditions | Maximum
Non-options Activity, Weighted Average Exercise Price
Vesting range on measurement of share-based compensation	200.00%
NRSU | 2022 Nextracker Equity Incentive Plan
Non-options Activity
Unvested RSU awards outstanding, beginning of fiscal year (in shares)	0
Granted (in shares)	2,172,234
Vested (in shares)	0
Forfeited (in shares)	(169,815)
Unvested RSU awards outstanding, end of fiscal year (in shares)	2,002,419	0
Non-options Activity, Weighted Average Exercise Price
Unvested RSU awards outstanding, weighted average grant-date fair value, beginning of period (in dollars per share)	$ 0
Average grant date fair value (in dollars per share)	20.40
Vested, weighted average grant-date fair value (in dollars per share)	0
Forfeited, weighted average grant-date fair value (in dollars per share)	20.40
Unvested RSU awards outstanding, weighted average grant-date fair value, end of period (in dollars per share)	$ 20.40	$ 0
NPSU | 2022 Nextracker Equity Incentive Plan
Non-options Activity
Unvested RSU awards outstanding, beginning of fiscal year (in shares)	0
Granted (in shares)	219,713
Vested (in shares)	0
Forfeited (in shares)	0
Unvested RSU awards outstanding, end of fiscal year (in shares)	219,713	0
Non-options Activity, Weighted Average Exercise Price
Unvested RSU awards outstanding, weighted average grant-date fair value, beginning of period (in dollars per share)	$ 0
Average grant date fair value (in dollars per share)	23.01
Vested, weighted average grant-date fair value (in dollars per share)	0
Forfeited, weighted average grant-date fair value (in dollars per share)	0
Unvested RSU awards outstanding, weighted average grant-date fair value, end of period (in dollars per share)	$ 23.01	$ 0
NPSU | 2022 Nextracker Equity Incentive Plan | Minimum
Non-options Activity, Weighted Average Exercise Price
Vesting range on measurement of share-based compensation	0.00%
NPSU | 2022 Nextracker Equity Incentive Plan | Maximum
Non-options Activity, Weighted Average Exercise Price
Vesting range on measurement of share-based compensation	200.00%