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Provisions and other non-current liabilities - Provisions and other non-current liabilities (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Accrued liability for employee benefits: |  |
Defined benefit pension plans | $ 339 | $ 291
Other long-term employee benefits and deferred compensation | 152 | 140
Other post-employment benefits | 332 | 423
Provisions for litigation and other legal matters | 0 | 0
Contingent consideration | 142 | 208
Other non-current liabilities | 95 | 106
Total provisions and other non-current liabilities | $ 1,060 | $ 1,168

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- Definition Accrued Liability For Employee Benefits [Abstract] + References No definition available. + Details
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- Definition Non-Current Contingent Consideration Liabilities + References No definition available. + Details
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- Definition Non-Current Provisions And Other Non-Current Liabilities + References No definition available. + Details
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- Definition Non-Current Provisions For Employee Benefits And Deferred Compensation + References No definition available. + Details
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- Definition Non-Current Provisions For Employee Benefits, Defined Benefit Pension Plans + References No definition available. + Details
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- Definition Provisions For Litigation And Other Legal Matters + References No definition available. + Details
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- Definition The amount of non-current liabilities that the entity does not separately disclose in the same statement or note. [Refer: Non-current liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_55&doctype=Standard -URIDate 2020-01-01 + Details
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