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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, $ in Millions | 12 Months Ended |
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Dec. 31, 2022 EUR (€) | Dec. 31, 2021 EUR (€) | Dec. 31, 2020 EUR (€) | Dec. 31, 2022 USD ($) | Dec. 31, 2022 SGD ($)
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |  |  |  |
Derivative financial assets | € 206.0 |  |  |  |  |  |
Change in fair value of cash flow hedges | 7.0 | € (6.0) | [1] | € 4.0 | [1] |  |
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 | 38.0 |  |  |  |  |  |
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] |  |  |  |  |  |  |
Notional amount of forward sales | $ |  |  |  |  |  | 1,000 |
Derivative financial assets | 3.0 |  |  |  |  |  |
Change in fair value of cash flow hedges | 0.6 |  |  |  |  |  |
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] |  |  |  |  |  |  |
Notional amount of forward sales | $ |  |  |  |  |  |  | $ 1,500
Derivative financial assets | 33.0 |  |  |  |  |  |
Change in fair value of cash flow hedges | 2.5 |  |  |  |  |  |
Currency swaps in USD to EUR |  |  |  |  |  |  |
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 assets | 2.0 |  |  |  |  |  |
Change in fair value of cash flow hedges | 1.4 |  |  |  |  |  |
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 | 12,556.0 | 16,948.0 |  | 14,068.0 |  |  |
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 | 7,559.0 | 7,655.0 |  | 5,064.0 |  |  |
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 | 4,997.0 | 9,293.0 |  | 9,004.0 |  |  |
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 | 6,114.0 | 5,384.0 |  | 3,721.0 |  |  |
Notional amount | Less than 1 year | Forward Currency Sales In Pound Sterling |  |  |  |  |  |  |
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 | 384.0 | 309.0 |  | 257.0 |  |  |
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 | 203.0 | 70.0 |  | 26.0 |  |  |
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 | 2,011.0 | 4,816.0 |  | 6,068.0 |  |  |
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 | 2,154.0 | 2,910.0 |  | 2,250.0 |  |  |
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 | 205.0 | 235.0 |  | 68.0 |  |  |
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 | 90.0 | 212.0 |  | (216.0) |  |  |
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 | 66.0 | 15.0 |  | 10.0 |  |  |
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 | 24.0 | 197.0 |  | (226.0) |  |  |
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 | 59.0 | 23.0 |  | 20.0 |  |  |
Fair value | Less than 1 year | Forward Currency Sales In Pound Sterling |  |  |  |  |  |  |
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 | 7.0 | (2.0) |  | (6.0) |  |  |
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 | 2.0 | (2.0) |  | 0.0 |  |  |
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 | (4.0) | 128.0 |  | (200.0) |  |  |
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 | 22.0 | 75.0 |  | (27.0) |  |  |
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 | € 4.0 | € (2.0) |  | € 0.0 |  |  |
[1] | Includes the impacts of the IFRIC final agenda decisions of March 2021 on the costs of configuring or customising application software used in a Software as a Service (SaaS) arrangement and of April 2021 on the attribution of benefits to periods of service, as described in Note A.2.1. to the consolidated financial statements for the year ended December 31, 2021.

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