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Investments accounted for using the equity method - Summary of Share of Profit or Loss and Other Comprehensive Income of Associates and Joint Ventures (Details) - EUR (€) € in Millions |  | 12 Months Ended
--- | --- | ---
May 29, 2020 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Disclosure of transactions between related parties [line items] |  |  |  |
Share of profit/(loss) from investments accounted for using the equity method |  | € 68 | € 39 | € 359
Joint ventures |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Share of profit/(loss) from investments accounted for using the equity method |  | 74 | 26 | 4
Share of other comprehensive income from investments accounted for using the equity method |  | (2) | (6) | 8
Total |  | 72 | 20 | 12
Associates |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Share of profit/(loss) from investments accounted for using the equity method |  | (6) | 13 | 355
Share of other comprehensive income from investments accounted for using the equity method |  | (3) | 0 | (311)
Total |  | € (9) | € 13 | 44
Regeneron |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |
Share of profit/(loss) from investments accounted for using the equity method | € 343 |  |  | € 343

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- Definition The entity's share of the other comprehensive income of associates and joint ventures accounted for using the equity method, before tax. [Refer: Associates [member]; Investments accounted for using equity method; Joint ventures [member]; Other comprehensive income] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Note Effective on first application of IFRS 9 -Name IFRS -Number 4 -IssueDate 2021-01-01 -Paragraph 39M -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_39M_b&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 91 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_91_b&doctype=Standard -URIDate 2021-03-24 + Details
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- Definition The entity's share of the profit (loss) of associates and joint ventures accounted for using the equity method. [Refer: Associates [member]; Investments accounted for using equity method; Joint ventures [member]; Profit (loss)] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2021-01-01 -Paragraph 23 -Subparagraph g -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2021-en-r&anchor=para_23_g&doctype=Standard -URIDate 2021-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 8 -IssueDate 2021-01-01 -Paragraph 28 -Subparagraph e -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=8&code=ifrs-tx-2021-en-r&anchor=para_28_e&doctype=Standard -URIDate 2021-03-24 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Note Effective on first application of IFRS 9 -Name IFRS -Number 4 -IssueDate 2021-01-01 -Paragraph 39M -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=4&code=ifrs-tx-2021-en-b&anchor=para_39M_b&doctype=Standard -URIDate 2021-03-24 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2021-01-01 -Paragraph 82 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_82_c&doctype=Standard -URIDate 2021-03-24 + Details
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