SHARE-BASED COMPENSATION - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended
Jun. 30, 2023	Jul. 01, 2022
Share-based compensation
Stock-based compensation	$ 41	$ 26
2022 Nextracker Plan
Share-based compensation
Unrecognized compensation expense	$ 61
Share weighted-average remaining vesting period	2 years 6 months
Equity-based compensation awards granted (in shares)	1,100,000
Equity-based compensation awards, outstanding (in shares)	5,800,000
Equity-based compensation awards, targeted vesting amount (in shares)	3,800,000
Stock-based compensation	$ 8
Restricted Stock Units \| 2017 Plan
Share-based compensation
Awards granted (in shares)	4,800,000
Unrecognized compensation expense	$ 237
Share weighted-average remaining vesting period	2 years 4 months 24 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	12,600,000
Restricted Stock Units \| 2022 Nextracker Plan
Share-based compensation
Awards granted (in shares)	500,000
RSU with No Performance Or Market Conditions \| 2017 Plan
Share-based compensation
Awards granted (in shares)	3,000,000
Vesting period	3 years
Average grant date price of unvested share bonus awards (in dollars per share)	$ 26.81
RSU with Performance Conditions \| 2017 Plan
Share-based compensation
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	1,300,000
RSU with Performance Conditions \| 2022 Nextracker Plan
Share-based compensation
Awards granted (in shares)	100,000
RSU with Performance Conditions \| Key employees \| 2017 Plan
Share-based compensation
Awards granted (in shares)	400,000
Vesting period	3 years
Average grant date price of unvested share bonus awards (in dollars per share)	$ 26.72
RSU with Performance Conditions \| Minimum \| 2017 Plan
Share-based compensation
Number of shares that may be issued (in shares)	0
RSU with Performance Conditions \| Minimum \| Key employees \| 2017 Plan
Share-based compensation
Awards granted (in shares)	0
RSU with Performance Conditions \| Maximum \| 2017 Plan
Share-based compensation
Number of shares that may be issued (in shares)	2,600,000
RSU with Performance Conditions \| Maximum \| Key employees \| 2017 Plan
Share-based compensation
Awards granted (in shares)	800,000
RSU with Market Conditions \| 2017 Plan
Share-based compensation
Vested in period (in shares)	2,300,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	1,300,000
RSU with Market Conditions \| Key employees \| 2017 Plan
Share-based compensation
Awards granted (in shares)	400,000
Vesting period	3 years
Average grant date price of unvested share bonus awards (in dollars per share)	$ 35.64
RSU with Market Conditions \| Minimum \| 2017 Plan
Share-based compensation
Number of shares that may be issued (in shares)	0
RSU with Market Conditions \| Minimum \| Key employees \| 2017 Plan
Share-based compensation
Awards granted (in shares)	0
RSU with Market Conditions \| Maximum \| 2017 Plan
Share-based compensation
Number of shares that may be issued (in shares)	2,600,000
RSU with Market Conditions \| Maximum \| Key employees \| 2017 Plan
Share-based compensation
Awards granted (in shares)	800,000
RSU, Issued and Immediately Vested \| 2017 Plan
Share-based compensation
Awards granted (in shares)	1,200,000
Option \| 2022 Nextracker Plan
Share-based compensation
Options granted (in shares)	500,000

Share-Based Compensation Arrangement by Share-Based Payment Award, Equity-Based Compensation Awards, Grants in Period

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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