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Off balance sheet commitments - Summary of Off Balance Sheet Commitments Relating to Operating Activities (Details) € in Millions, $ in Billions | 6 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Jun. 30, 2023 USD ($) extension | Dec. 31, 2023 EUR (€) | Dec. 31, 2022 EUR (€)
Disclosure Of Off Balance Sheet Commitments [Line Items] |  |  |
Leases with a term of less than 12 months, low value asset leases and lease contracts committed but not yet commenced |  | € 221 | € 38
Irrevocable purchase commitments given |  | 6,141 |
Irrevocable purchase commitments received |  | (550) |
Research and development license agreements - commitments related to R&D and other commitments |  | 381 | 259
Research and development license agreements - contingent milestone payments in connection with development programs in progress |  | 4,886 | 2,919
Total - net commitments given |  | € 11,079 |
Lease, term |  | 15 years |
Lease, cost | $ | $ 0.2 |  |
Lease, extension options, number | extension | 2 |  |
Lease, extension options, term | 5 years |  |
EUROAPI |  |  |
Disclosure Of Off Balance Sheet Commitments [Line Items] |  |  |
Irrevocable purchase commitments given |  | € 804 |
Minimum |  |  |
Disclosure Of Off Balance Sheet Commitments [Line Items] |  |  |
Lease, term | 12 years |  |
Less than 1 year |  |  |
Disclosure Of Off Balance Sheet Commitments [Line Items] |  |  |
Leases with a term of less than 12 months, low value asset leases and lease contracts committed but not yet commenced |  | 24 |
Irrevocable purchase commitments given |  | 2,446 |
Irrevocable purchase commitments received |  | (443) |
Research and development license agreements - commitments related to R&D and other commitments |  | 256 |
Research and development license agreements - contingent milestone payments in connection with development programs in progress |  | 280 |
Total - net commitments given |  | 2,563 |
From 1 to 3 years |  |  |
Disclosure Of Off Balance Sheet Commitments [Line Items] |  |  |
Leases with a term of less than 12 months, low value asset leases and lease contracts committed but not yet commenced |  | 26 |
Irrevocable purchase commitments given |  | 2,090 |
Irrevocable purchase commitments received |  | (96) |
Research and development license agreements - commitments related to R&D and other commitments |  | 101 |
Research and development license agreements - contingent milestone payments in connection with development programs in progress |  | 1,757 |
Total - net commitments given |  | 3,878 |
From 3 to 5 years |  |  |
Disclosure Of Off Balance Sheet Commitments [Line Items] |  |  |
Leases with a term of less than 12 months, low value asset leases and lease contracts committed but not yet commenced |  | 25 |
Irrevocable purchase commitments given |  | 778 |
Irrevocable purchase commitments received |  | (11) |
Research and development license agreements - commitments related to R&D and other commitments |  | 15 |
Research and development license agreements - contingent milestone payments in connection with development programs in progress |  | 818 |
Total - net commitments given |  | 1,625 |
More than 5 years |  |  |
Disclosure Of Off Balance Sheet Commitments [Line Items] |  |  |
Leases with a term of less than 12 months, low value asset leases and lease contracts committed but not yet commenced |  | 146 |
Irrevocable purchase commitments given |  | 827 |
Irrevocable purchase commitments received |  | 0 |
Research and development license agreements - commitments related to R&D and other commitments |  | 9 |
Research and development license agreements - contingent milestone payments in connection with development programs in progress |  | 2,031 |
Total - net commitments given |  | 3,013 |
Suppliers |  |  |
Disclosure Of Off Balance Sheet Commitments [Line Items] |  |  |
Irrevocable purchase commitments given |  |  | 6,194
Irrevocable purchase commitments received |  |  | € (574)
Joint ventures |  |  |
Disclosure Of Off Balance Sheet Commitments [Line Items] |  |  |
Irrevocable purchase commitments given |  | € 926 |

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