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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, 2021 | Dec. 31, 2020 | Dec. 31, 2019
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Realized (losses) / gains on foreign currency derivatives - net | € (1) | € (11) | € 1
Unrealized (losses) / gains on foreign currency derivatives - net | 13 | (8) | 1
Total | 10 | (32) | 13
Currency risk | At fair value through profit and loss |  |  |
Disclosure of nature and extent of risks arising from financial instruments [line items] |  |  |
Realized (losses) / gains on foreign currency derivatives - net | (36) | 7 | 9
Unrealized (losses) / gains on foreign currency derivatives - net | 46 | (39) | 4
Total | € 10 | € (32) | € 13

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- Definition Realized gains (losses) on foreign currency derivatives - net. + References No definition available. + Details
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- Definition Unrealized gains (losses) on foreign currency derivatives - net. + References No definition available. + Details
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