v3.25.2
Stock-based compensation - Additional information (Details) - Two Thousand and Twenty Two Nextracker Plan
$ / shares in Units, shares in Millions, $ in Millions
3 Months Ended
Jun. 27, 2025
USD ($)
$ / shares
shares
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Unrecognized compensation cost | $ $ 165.2
Weighted-average period over which cost not yet recognized is expected to be recognized 2 years
Common stock equivalents from RSUs  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period (in shares) | shares 0.4
Award vesting period 3 years
Granted (in USD per share) $ 56.05
PSU  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Share-based compensation arrangement by share-based payment award, equity instruments other than options, grants in period (in shares) | shares 0.4
Granted (in USD per share) $ 76.04
Employee Stock Option  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Share-based compensation arrangement by share-based payment award, options, grants in period, gross (in shares) | shares 0.2
Share-based compensation arrangement, option, exercise price range, outstanding, weighted average exercise price (in USD per share) $ 56.05
Weighted average grant date fair values (in USD per share) $ 32.60
Minimum | PSU  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Range of options awards vesting percentage 0.00%
Maximum | PSU  
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]  
Range of options awards vesting percentage 300.00%