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Debt, cash and cash equivalents and lease liabilities - Lease Liabilities (Details) - EUR (€) € in Millions | 1 Months Ended | 12 Months Ended |  |  |
--- | --- | --- | --- | --- | ---
Dec. 31, 2018 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure of maturity analysis of finance lease payments receivable [line items] |  |  |  |  |
Lease liabilities |  |  | € 2,181 | € 2,108 | € 1,163
Discounting effect |  | € (219) | (228) | (148) |
Cambridge, Massachusetts |  |  |  |  |
Disclosure of maturity analysis of finance lease payments receivable [line items] |  |  |  |  |
Initial lease term | 15 years | 15 years |  |  |
Less than 1 year |  |  |  |  |
Disclosure of maturity analysis of finance lease payments receivable [line items] |  |  |  |  |
Lease liabilities |  | € 320 | 314 | 247 |
From 1 to 3 years |  |  |  |  |
Disclosure of maturity analysis of finance lease payments receivable [line items] |  |  |  |  |
Lease liabilities |  | 515 | 476 | 357 |
From 3 to 5 years |  |  |  |  |
Disclosure of maturity analysis of finance lease payments receivable [line items] |  |  |  |  |
Lease liabilities |  | 436 | 362 | 225 |
More than 5 years |  |  |  |  |
Disclosure of maturity analysis of finance lease payments receivable [line items] |  |  |  |  |
Lease liabilities |  | € 1,129 | € 1,184 | € 482 |

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2021-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2021-en-r&anchor=para_47_b&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition Initial Lease Term + References No definition available. + Details
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- Definition Lease Liabilities, Effect Of Discounting + References No definition available. + Details
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- Details
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