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Subsequent events (Details) - Major acquisition - Forecast - USD ($) $ / shares in Units, $ in Millions | Aug. 31, 2026 | Sep. 30, 2025
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LumiThera, Inc |  |
Disclosure of non-adjusting events after reporting period [line items] |  |
Percentage of outstanding equity acquired |  | 100.00%
Acquisition, cash transferred |  | $ 132
Acquisition consideration |  | $ 140
STAAR Surgical Company |  |
Disclosure of non-adjusting events after reporting period [line items] |  |
Acquisition consideration | $ 1,500 |
Acquisition consideration, per share (in dollars per share) | $ 28.00 |

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- Details
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- Details
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- Details
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