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Other non-current assets - Summary of Other Non-current Assets (Details) € in Millions, $ in Millions | Mar. 29, 2022 USD ($) | Jan. 07, 2022 USD ($) | Dec. 31, 2022 EUR (€) | Dec. 31, 2021 EUR (€) | Dec. 31, 2020 EUR (€)
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Disclosure Of Other Non Current Assets [Line Items] |  |  |  |  |  |
Other financial assets at fair value through profit or loss |  |  | € 823 | € 902 | € 890 |
Pre-funded pension obligations |  |  | 269 | 408 | 177 |
Long-term prepaid expenses |  |  | 286 | 59 | 92 |
Long-term loans and advances and other non-current receivables |  |  | 452 | 485 | 537 |
Derivative financial instruments |  |  | 0 | 3 | 24 |
Other non-current assets |  |  | 3,095 | 3,127 | 2,734 | [1]
Non-current finance lease receivables |  |  | 164 |  |  |
Non-current finance lease receivables, gross |  |  | 227 |  |  |
Exscientia |  |  |  |  |  |
Disclosure Of Other Non Current Assets [Line Items] |  |  |  |  |  |
Upfront payment | $ |  | $ 100 |  |  |  |
IGM Biosciences, Inc |  |  |  |  |  |
Disclosure Of Other Non Current Assets [Line Items] |  |  |  |  |  |
Upfront payment | $ | $ 150 |  |  |  |  |
Trading equity securities |  |  |  |  |  |
Disclosure Of Other Non Current Assets [Line Items] |  |  |  |  |  |
Fair value through other comprehensive income |  |  | 936 | 823 | 588 |
Debt securities |  |  |  |  |  |
Disclosure Of Other Non Current Assets [Line Items] |  |  |  |  |  |
Fair value through other comprehensive income |  |  | € 329 | € 447 | € 426 |
[1] | Includes the impacts of the IFRIC final agenda decisions of March 2021 on the costs of configuring or customising application software used in a Software as a Service (SaaS) arrangement and of April 2021 on the attribution of benefits to periods of service, as described in Note A.2.1. to the consolidated financial statements for the year ended December 31, 2021.

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- Definition The amount of non-current finance lease receivables. [Refer: Finance lease receivables] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_55&doctype=Standard -URIDate 2021-03-24 + Details
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