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FINANCIAL RISK MANAGEMENT - Effect of Foreign Currency Derivatives Impacts and Financing Transaction Exposures (Details) - EUR (€) € in Millions	12 Months Ended
	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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Realized gains (losses) on foreign currency derivatives - net.

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Unrealized gains (losses) on foreign currency derivatives - net.

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The gains (losses) resulting from change in the fair value of derivatives recognised in profit or loss. [Refer: Derivatives [member]]

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2021-01-01
-Paragraph 85
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2021-en-r&anchor=para_85&doctype=Standard
-URIDate 2021-03-24

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