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Debt, Cash and Cash Equivalents - Summary of Market Value of Net Debt (Details) - EUR (€) € in Millions | 6 Months Ended | 12 Months Ended
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Jun. 30, 2023 | Dec. 31, 2022
Disclosure of detailed information about borrowings [Line Items] |  |
Market value | € 19,140 | € 19,218
Market value |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Market value | 10,105 | 5,227
Value on redemption |  |
Disclosure of detailed information about borrowings [Line Items] |  |
Market value | 19,174 | 19,273
Value on redemption | € 11,217 | € 6,492

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- Definition The amount of outstanding funds that the entity is obligated to repay. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 55 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard -URIDate 2022-03-24 + Details
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- Details
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