Liquidity - Financial Debt (Details) - EUR (€) € in Millions	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Financial Liabilities
Carrying Amount	€ 10,943	€ 13,005
Current financial liabilities	4,808	4,528
Non-current financial liabilities	9,547	11,042
Total financial liabilities	€ 14,354	€ 15,570
Financial debt as % of financial liabilities	76.00%	84.00%
Interest rate	1.23%	0.83%	0.87%
Bonds
Financial Liabilities
Carrying Amount	€ 8,155	€ 9,751
Private placements
Financial Liabilities
Carrying Amount	405	790
Commercial Paper
Financial Liabilities
Carrying Amount	928	€ 931
Interest rate		(0.48%)
Bank loans
Financial Liabilities
Carrying Amount	1,456	€ 1,533
Current
Financial Liabilities
Nominal Volume	3,986	3,756
Carrying Amount	3,983	3,760
Current financial liabilities	€ 4,808	€ 4,528
Financial debt as % of financial liabilities - current	83.00%	83.00%
Current \| Bonds
Financial Liabilities
Nominal Volume	€ 1,600	€ 900
Carrying Amount	1,600	900
Current \| Private placements
Financial Liabilities
Nominal Volume	0	393
Carrying Amount	0	396
Current \| Commercial Paper
Financial Liabilities
Nominal Volume	930	930
Carrying Amount	928	931
Current \| Bank loans
Financial Liabilities
Nominal Volume	1,456	1,533
Carrying Amount	1,456	1,533
Non Current
Financial Liabilities
Nominal Volume	7,778	9,338
Carrying Amount	6,960	9,245
Non-current financial liabilities	€ 9,547	€ 11,042
Financial debt as % of financial liabilities - non-current	73.00%	84.00%
Non Current \| Bonds
Financial Liabilities
Nominal Volume	€ 7,381	€ 8,965
Carrying Amount	6,556	8,851
Non Current \| Private placements
Financial Liabilities
Nominal Volume	397	373
Carrying Amount	405	393
Non Current \| Commercial Paper
Financial Liabilities
Nominal Volume	0	0
Carrying Amount	0	0
Non Current \| Bank loans
Financial Liabilities
Nominal Volume	0	0
Carrying Amount	€ 0	€ 0

The interest rate on borrowings. [Refer: Borrowings]

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The amount of current financial liabilities. [Refer: Financial liabilities]

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

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The amount of non-current financial liabilities. [Refer: Financial liabilities]

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The nominal or face amount of a financial instrument, used to calculate payments made on that instrument.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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The percent of financial debt to current financial liabilities.

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The percent of financial debt to financial liabilities.

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The percent of financial debt to non-current financial liabilities.

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