| In millions, except per share items | Jun-30-23 | Jun-30-22 | Mar-31-22 | Sep-30-21 |
| | 10-Q | 10-Q | 10-Q | 10-Q |
| Cash flows from operating activities: | | | | |
| Net income (loss) | | 0.0 | -0.4 | 0.0 |
| Adjustments to reconcile net loss to net cash used in operating activities: | | | | |
| Realized and unrealized gain on marketable securities held in trust | | -0.4 | 0.1 | |
| Changes in operating assets and liabilities: | | | | |
| Prepaid expenses | | 0.2 | 0.1 | |
| Accrued expenses and related party payable | | 0.0 | 0.0 | 0.0 |
| Net cash provided by (used in) operating activities | | -0.1 | -0.3 | |
| |
| Cash flows from investing activities: | | | | |
| Proceeds from redemption of marketable securities held in trust account | | 234.7 | | |
| Investment in marketable securities held in trust account | | -234.7 | | |
| |
| Cash flows from financing activities: | | | | |
| Net change in cash and restricted cash | | -0.4 | | |
| |
| Supplemental disclosure of non-cash investing and financing activities: | | | | |
| Accretion of Class A ordinary shares to redemption value | | 0.2 | 0.1 | |