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FINANCIAL RISK MANAGEMENT - Effect of Foreign Currency Derivatives Impacts and Financing Transaction Exposures (Details) - EUR (€) € in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Realized gains / (losses) on foreign currency derivatives - net | € 10 | € (8) | € (1)
Unrealized gains / (losses) on foreign currency derivatives - net | (12) | 6 | 13
Total | 6 | 1 | 10
Currency risk | At fair value through profit and loss |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Realized gains / (losses) on foreign currency derivatives - net | 4 | 2 | (36)
Unrealized gains / (losses) on foreign currency derivatives - net | 2 | (1) | 46
Total | € 6 | € 1 | € 10

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- Definition Unrealized gains (losses) on foreign currency derivatives - net. + References No definition available. + Details
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- Definition The gains (losses) resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2023-01-01 -Paragraph 85 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2023-en-r&anchor=para_85&doctype=Standard -URIDate 2023-03-23 + Details
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