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Other non-current assets - Summary of Other Non-current Assets (Details) - EUR (€) € in Millions | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
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Disclosure Of Other Non Current Assets [Line Items] |  |  |
Other financial assets at fair value through profit or loss | € 808 | € 823 | € 902
Pre-funded pension obligations | 271 | 269 | 408
Long-term prepaid expenses | 114 | 286 | 59
Long-term loans and advances and other non-current receivables | 591 | 452 | 485
Derivative financial instruments | 0 | 0 | 3
Other non-current assets | 3,218 | 3,095 | 3,127
Non-current finance lease receivables | 132 | 164 |
Other current assets | 3,455 | 3,532 | 3,571
Non-current finance lease receivables, gross | 170 | 201 |
BioAtrium |  |  |
Disclosure Of Other Non Current Assets [Line Items] |  |  |
Long-term loans and advances and other non-current receivables | 157 |  |
Other current assets |  | 156 |
Trading equity securities |  |  |
Disclosure Of Other Non Current Assets [Line Items] |  |  |
Fair value through other comprehensive income | 1,088 | 936 | 823
Debt securities |  |  |
Disclosure Of Other Non Current Assets [Line Items] |  |  |
Fair value through other comprehensive income | € 346 | € 329 | € 447

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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 2023-01-01 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_55&doctype=Standard -URIDate 2023-03-23 + Details
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