Stockholders' equity (Details) - USD ($) $ / shares in Units, $ in Billions |
3 Months Ended | 7 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Sep. 30, 2026 |
Sep. 30, 2025 |
Sep. 30, 2026 |
Jun. 30, 2026 |
Mar. 04, 2026 |
|
| Subsidiary, Sale of Stock [Line Items] | |||||
| Dividends declared (in USD per share) | $ 0 | $ 0 | |||
| Ordinary shares | |||||
| Subsidiary, Sale of Stock [Line Items] | |||||
| Common stock, shares outstanding (in shares) | 406,929,463 | 406,929,463 | 380,710,559 | ||
| Management and PodTech Innovation Inc | |||||
| Subsidiary, Sale of Stock [Line Items] | |||||
| Issuance of ordinary shares (in shares) | 63,520 | 516,951 | |||
| At the market facility | |||||
| Subsidiary, Sale of Stock [Line Items] | |||||
| Maximum value of shares to be issued under share sale option agreement | $ 6.0 | ||||
| Shares issued under facility (in shares) | 59,431,312 | 59,431,312 | |||
| Proceeds from issuance of common stock under facility | $ 3.0 | ||||
| X | ||||||||||
- Definition Maximum Value Of Shares To Be Issued Under Share Sale Option Agreement No definition available.
|
| X | ||||||||||
- Definition Total Proceeds From Issuance Of Common Stock Under Facility No definition available.
|
| X | ||||||||||
- Definition Total Shares Issued Under Facility No definition available.
|
| X | ||||||||||
- Definition Aggregate dividends declared during the period for each share of common stock outstanding. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|
| X | ||||||||||
- Definition Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition Number of new stock issued during the period. Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
|
| X | ||||||||||
- Definition 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. No definition available.
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|