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Financial instruments - additional disclosures (Details 5) - Recurring fair value measurement [member] - USD ($) $ in Millions | Dec. 31, 2022 | Dec. 31, 2021
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Contingent consideration payables [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Financial liabilities, at fair value | $ (131) | $ (1,075)
Other financial liabilities [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Financial liabilities, at fair value | (232) | (19)
Derivative financial instruments [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Financial liabilities, at fair value | (55) | (68)
Non-current contingent consideration liabilities [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Financial liabilities, at fair value | (704) |
Current financial liabilities at fair value [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Financial liabilities, at fair value | (186) |
Non-current financial liabilities at fair value [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Financial liabilities, at fair value | (936) | (1,162)
Level 2 of fair value hierarchy [member] | Derivative financial instruments [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Financial liabilities, at fair value | (55) | (68)
Level 2 of fair value hierarchy [member] | Current financial liabilities at fair value [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Financial liabilities, at fair value | (55) |
Level 2 of fair value hierarchy [member] | Non-current financial liabilities at fair value [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Financial liabilities, at fair value |  | (68)
Level 3 of fair value hierarchy [member] | Contingent consideration payables [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Financial liabilities, at fair value | (131) | (1,075)
Level 3 of fair value hierarchy [member] | Other financial liabilities [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Financial liabilities, at fair value | (232) | (19)
Level 3 of fair value hierarchy [member] | Non-current contingent consideration liabilities [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Financial liabilities, at fair value | (704) |
Level 3 of fair value hierarchy [member] | Current financial liabilities at fair value [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Financial liabilities, at fair value | (131) |
Level 3 of fair value hierarchy [member] | Non-current financial liabilities at fair value [member] |  |
Disclosure of fair value measurement of liabilities [line items] |  |
Financial liabilities, at fair value | $ (936) | $ (1,094)

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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table. + References No definition available. + Details
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- Definition The fair value of financial liabilities. [Refer: At fair value [member]; Financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2022-03-24 -Paragraph 25 -URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2022-en-r&anchor=para_25&doctype=Standard -URIDate 2022-03-24 + Details
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