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Non-current and current financial debts - Additional information (Details) € in Millions, $ in Millions |  | 1 Months Ended | 3 Months Ended | 6 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
May 31, 2022 USD ($) | May 31, 2022 EUR (€) | Feb. 28, 2022 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 USD ($) | Jun. 30, 2021 USD ($) | Jun. 30, 2022 EUR (€) | May 30, 2022 USD ($) | Dec. 31, 2021 USD ($)
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Interest expense |  |  |  | $ 25 | $ 24 | $ 49 | $ 48 |  |  |
Borrowings |  |  |  | 3,970 |  | 3,970 |  |  |  | $ 4,080
Repayments of non-current borrowings |  |  |  |  |  | 536 | $ 0 |  |  |
Write-off of unamortized deferred financing costs |  |  |  | 1 |  | 1 |  |  |  |
Series 2028 notes |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings | $ 537 |  |  | $ 522 |  | $ 522 |  | € 500 |  |
Borrowings, percentage of principal amount |  |  |  |  |  | 99.476% |  |  |  |
Borrowings, interest rate | 2.375% |  |  | 2.375% |  | 2.375% |  | 2.375% |  |
Borrowings discount |  |  |  | $ 3 |  | $ 3 |  |  |  |
Debt issuance costs |  |  |  |  |  | 3 |  |  |  |
Facility C Term Loan |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Repayments of non-current borrowings | $ 376 | € 350 |  |  |  |  |  |  |  |
Facility B Term Loan |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings |  |  |  | $ 640 |  | $ 640 |  |  | $ 800 |
Repayments of non-current borrowings | € |  | € 160 |  |  |  |  |  |  |  |
Local facilities (Japan) |  |  |  |  |  |  |  |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |  |  |  |  |  |  |  |
Borrowings |  |  | $ 62 |  |  |  |  |  |  |
Borrowings term |  |  | 1 year |  |  |  |  |  |  |

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