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Derivative Financial Instruments - Disclosure of Financial Currency Hedging Instruments in Place with Notional Amount Translated (Details) € in Millions, $ in Millions, $ in Millions | 6 Months Ended | 12 Months Ended |
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Jun. 30, 2023 EUR (€) | Jun. 30, 2022 EUR (€) | Dec. 31, 2022 EUR (€) | Jun. 30, 2023 USD ($) | Jun. 30, 2023 SGD ($)
Disclosure of Information about Terms and Conditions of Hedging Instruments and How They Affect Future Cash Flows [Line Items] |  |  |  |  |
Change in fair value of cash flow hedges | € 1 | € (17) | € 7 |  |
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 | $ |  |  |  | $ 3,615 |
Derivative financial assets | 9 |  |  |  |
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] |  |  |  |  |
Notional amount | $ |  |  |  |  | $ 2,000
Derivative financial assets | 0 |  |  |  |
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 | $ |  |  |  |  | $ 1,260
Derivative financial assets | 11 |  |  |  |
Change in fair value of cash flow hedges | 3 |  |  |  |
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 | $ |  |  |  | 1,000 |
Derivative financial liabilities | 10 |  |  |  |
Change in fair value of cash flow hedges | 2 |  |  |  |
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 | $ |  |  |  | $ 1,782 |
Derivative financial assets | 8 |  |  |  |
Change in fair value of cash flow hedges | 0 |  |  |  |
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 | 17,392 |  |  |  |
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 | 8,935 |  |  |  |
Notional amount | Forward currency sales in US dollar | 2024 |  |  |  |  |
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 | 6,147 |  |  |  |
Notional amount | Forward currency sales in Singapore dollar | 2023 |  |  |  |  |
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 | 1,355 |  |  |  |
Notional amount | Forward currency sales in Pound sterling | 2023 |  |  |  |  |
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 | 466 |  |  |  |
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 | 8,457 |  |  |  |
Notional amount | Forward currency purchases in US dollar | 2024 |  |  |  |  |
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 | 5,106 |  |  |  |
Notional amount | Forward currency purchases in Singapore dollar | 2023 |  |  |  |  |
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 | 2,689 |  |  |  |
Notional amount | Forward currency purchases in Japanese Yen | 2023 |  |  |  |  |
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 | 320 |  |  |  |
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 | (1) |  |  |  |
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 | 17 |  |  |  |
Fair value | Forward currency sales in US dollar | 2024 |  |  |  |  |
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 |  |  |  |
Fair value | Forward currency sales in Singapore dollar | 2023 |  |  |  |  |
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 | 0 |  |  |  |
Fair value | Forward currency sales in Pound sterling | 2023 |  |  |  |  |
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 | 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 | (18) |  |  |  |
Fair value | Forward currency purchases in US dollar | 2024 |  |  |  |  |
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 | (13) |  |  |  |
Fair value | Forward currency purchases in Singapore dollar | 2023 |  |  |  |  |
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) |  |  |  |
Fair value | Forward currency purchases in Japanese Yen | 2023 |  |  |  |  |
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) |  |  |  |

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