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Derivative financial instruments and market risks - Disclosure of Financial Currency Hedging Instruments in Place with Notional Amount Translated (Details) € in Millions, $ in Millions | 12 Months Ended |
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Dec. 31, 2023 EUR (€) | Dec. 31, 2022 EUR (€) | Dec. 31, 2021 EUR (€) | Dec. 31, 2023 USD ($)
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Derivative financial assets | € 201.0 |  |  |
Derivative financial liabilities | 291.0 |  |  |
Change in fair value of cash flow hedges | (1.0) | € 7.0 | € (6.0) |
Forward currency sales in US Dollar |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Notional amount of forward sales | $ |  |  |  | $ 3,615
Derivative financial assets | 54.0 |  |  |
Forward currency purchases in US dollar, US bond |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Notional amount of forward sales | $ |  |  |  | 1,000
Derivative financial liabilities | 31.0 |  |  |
Change in fair value of cash flow hedges | 2.7 |  |  |
Forward currency purchases in US dollar, commercial paper |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Notional amount of forward sales | $ |  |  |  | $ 1,044
Derivative financial liabilities | 3.0 |  |  |
Change in fair value of cash flow hedges | 0.7 |  |  |
Notional amount |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | 17,334.0 | 12,556.0 | 16,948.0 |
Notional amount | Forward currency sales |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | 10,279.0 | 7,559.0 | 7,655.0 |
Notional amount | Forward currency purchases |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | 7,055.0 | 4,997.0 | 9,293.0 |
Notional amount | Less than 1 year | Forward currency sales in US Dollar |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | 6,628.0 | 6,114.0 | 5,384.0 |
Notional amount | Less than 1 year | Forward currency sales in Singapore Dollar |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | 1,556.0 | 0.0 | 0.0 |
Notional amount | Less than 1 year | Forward Currency Sales In Chinese Yuan |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | 513.0 | 203.0 | 70.0 |
Notional amount | Less than 1 year | Forward currency purchases in US Dollar |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | 3,073.0 | 2,011.0 | 4,816.0 |
Notional amount | Less than 1 year | Forward currency purchases in Singapore Dollar |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | 2,696.0 | 2,154.0 | 2,910.0 |
Notional amount | Less than 1 year | Forward currency purchases In Japanese yen |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | 341.0 | 205.0 | 235.0 |
Fair value |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | 53.0 | 90.0 | 212.0 |
Fair value | Forward currency sales |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | 111.0 | 66.0 | 15.0 |
Fair value | Forward currency purchases |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | (58.0) | 24.0 | 197.0 |
Fair value | Less than 1 year | Forward currency sales in US Dollar |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | 101.0 | 59.0 | 23.0 |
Fair value | Less than 1 year | Forward currency sales in Singapore Dollar |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | 6.0 | 0.0 | 0.0 |
Fair value | Less than 1 year | Forward Currency Sales In Chinese Yuan |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | 4.0 | 2.0 | (2.0) |
Fair value | Less than 1 year | Forward currency purchases in US Dollar |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | (52.0) | (4.0) | 128.0 |
Fair value | Less than 1 year | Forward currency purchases in Singapore Dollar |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | (10.0) | 22.0 | 75.0 |
Fair value | Less than 1 year | Forward currency purchases In Japanese yen |  |  |  |
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |
Financial currency hedging instruments in place | € 3.0 | € 4.0 | € (2.0) |

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