Stock-based compensation - Additional information (Details) $ / shares in Units, $ in Millions	3 Months Ended
Jul. 03, 2026 USD ($) $ / shares shares
PSU
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Number of equity-based payment instruments vested during the period (in shares)	400,000
Two Thousand and Twenty Two Nextpower Plan
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Unrecognized compensation cost \| $	$ 215.2
Weighted-average period over which cost not yet recognized is expected to be recognized	2 years 2 months 12 days
Two Thousand and Twenty Two Nextpower Plan \| 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)	200,000
Award vesting period	3 years
Granted (in USD per share) \| $ / shares	$ 129.65
Two Thousand and Twenty Two Nextpower Plan \| 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)	200,000
Granted (in USD per share) \| $ / shares	$ 164.43
Two Thousand and Twenty Two Nextpower Plan \| Employee Stock Option
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Granted (in shares)	0
Two Thousand and Twenty Two Nextpower Plan \| Share-Based Payment Arrangement
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Forfeited (in shares)	1,400,000
Two Thousand and Twenty Two Nextpower Plan \| Minimum \| PSU
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Range of options awards vesting percentage	0.00%
Two Thousand and Twenty Two Nextpower Plan \| Maximum \| PSU
Share-Based Compensation Arrangement by Share-Based Payment Award [Line Items]
Range of options awards vesting percentage	300.00%

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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