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Legal proceedings and contingent liabilities - Legal proceedings (Details) $ in Millions | 1 Months Ended | 35 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2025 USD ($) patent | May 31, 2025 USD ($) | Sep. 30, 2024 USD ($) | Jul. 31, 2024 | Dec. 31, 2023 USD ($) | Sep. 30, 2023 | Aug. 31, 2022 | Jul. 31, 2022 | Jun. 30, 2025 patent | Apr. 30, 2025 USD ($) | Jul. 31, 2020 USD ($)
Lokelma US patent proceedings |  |  |  |  |  |  |  |  |  |  |
Commitments and contingent liabilities |  |  |  |  |  |  |  |  |  |  |
Number of generic manufacturers which settlement agreements have been entered with |  |  |  |  |  |  |  |  | 5 |  |
Number of generic manufacturers with which proceedings are ongoing |  |  |  |  |  |  | 5 |  |  |  |
Soliris Canada patent proceedings |  |  |  |  |  |  |  |  |  |  |
Commitments and contingent liabilities |  |  |  |  |  |  |  |  |  |  |
Stay period for approval of each defendant's product |  |  |  |  |  | 24 months |  |  |  |  |
Seroquel XR Antitrust Litigation |  |  |  |  |  |  |  |  |  |  |
Commitments and contingent liabilities |  |  |  |  |  |  |  |  |  |  |
Litigation settlement, amount awarded to counterparty |  | $ 97.0 |  |  |  |  |  |  |  |  |
Number of generic manufacturers whose claims have been dismissed |  |  |  |  |  |  |  | 1 |  |  |
Number of generic manufacturers which settlement agreements have been entered with |  |  | 1 |  |  |  |  |  |  |  |
Russian Ministry of Health (MOH) | Tagrisso Patent Proceedings, Russia |  |  |  |  |  |  |  |  |  |  |
Commitments and contingent liabilities |  |  |  |  |  |  |  |  |  |  |
Number of appeals prior to dismissal |  |  |  | 2 |  |  |  |  |  |  |
Definiens commercial litigation |  |  |  |  |  |  |  |  |  |  |
Commitments and contingent liabilities |  |  |  |  |  |  |  |  |  |  |
Amount of claims against entity |  |  |  |  |  |  |  |  |  |  | $ 140.0
Damages awarded, value |  |  |  |  | $ 46.0 |  |  |  |  |  |
Shenzhen City Customs Office proceedings |  |  |  |  |  |  |  |  |  |  |
Commitments and contingent liabilities |  |  |  |  |  |  |  |  |  |  |
Suspected unpaid importation taxes |  |  |  |  |  |  |  |  |  | $ 1.6 |
Shenzhen City Customs Office proceedings | Minimum |  |  |  |  |  |  |  |  |  |  |
Commitments and contingent liabilities |  |  |  |  |  |  |  |  |  |  |
Ratio of possible fine to amount of unpaid taxes |  |  |  |  |  |  |  |  |  | 1 |
Shenzhen City Customs Office proceedings | Maximum |  |  |  |  |  |  |  |  |  |  |
Commitments and contingent liabilities |  |  |  |  |  |  |  |  |  |  |
Ratio of possible fine to amount of unpaid taxes |  |  |  |  |  |  |  |  |  | 5 |
Forxiga UK patent proceedings |  |  |  |  |  |  |  |  |  |  |
Commitments and contingent liabilities |  |  |  |  |  |  |  |  |  |  |
Number of patents being challenged | patent | 1 |  |  |  |  |  |  |  | 1 |  |
Syntimmune Milestone Litigation, US |  |  |  |  |  |  |  |  |  |  |
Commitments and contingent liabilities |  |  |  |  |  |  |  |  |  |  |
Damages awarded, value | $ 181.0 |  |  |  |  |  |  |  |  |  |
Court decision on amount of milestone that had been reached |  |  | $ 130.0 |  |  |  |  |  |  |  |

X
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