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Acquisitions of businesses (Details) - USD ($) | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Business Combinations1 [Abstract] |  |  |
Property, plant & equipment | $ 0 | $ 1,000,000 | $ 1,000,000
Currently marketed products | 0 | 0 | 346,000,000
Acquired research & development | 0 | 505,000,000 | 0
Deferred tax assets | 0 | 28,000,000 | 12,000,000
Inventories | 0 | 0 | 3,000,000
Trade receivables and other current assets | 0 | 0 | 2,000,000
Cash and cash equivalents | 0 | 6,000,000 | 5,000,000
Deferred tax liabilities | 0 | (121,000,000) | (78,000,000)
Trade payables and other liabilities | 0 | (1,000,000) | (4,000,000)
Net identifiable assets acquired | 0 | 418,000,000 | 287,000,000
Acquired liquidity | 0 | (6,000,000) | (5,000,000)
Goodwill | 0 | 6,000,000 | 4,000,000
Net assets recognized as a result of business combinations | $ 0 | 418,000,000 | 286,000,000
Goodwill expected to be deductible for tax purposes |  | $ 0 | $ 0

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- Definition Business Combinations1 [Abstract] + References No definition available. + Details
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- Definition Currently Marketed Products Intangible Asset Recognised As Of Acquisition Date + References No definition available. + Details
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- Definition Net Identifiable Assets Acquired (Liabilities Assumed), Excluding Cash Acquired + References No definition available. + Details
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- Definition Research And Development Intangible Assets Recognised As Of Acquisition Date + References No definition available. + Details
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- Definition The amount recognised as of the acquisition date for cash and cash equivalents acquired in a business combination. [Refer: Cash and cash equivalents; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B64 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2020-01-01 + Details
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- Definition The amount recognised as of the acquisition date for deferred tax assets acquired in a business combination. [Refer: Deferred tax assets; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B64 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2020-01-01 + Details
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- Definition The amount recognised as of the acquisition date for deferred tax liabilities assumed in a business combination. [Refer: Deferred tax liabilities; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B64 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2020-01-01 + Details
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- Definition The fair value of receivables acquired in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B64 -Subparagraph h -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_h_i&doctype=Appendix&subtype=B -URIDate 2020-01-01 + Details
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- Definition The amount of goodwill in a business combination that is expected to be deductible for tax purposes. [Refer: Goodwill; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B64 -Subparagraph k -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_k&doctype=Appendix&subtype=B -URIDate 2020-01-01 + Details
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- Definition The amount recognised as of the business combination's acquisition date for goodwill. [Refer: Goodwill; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B64 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64&doctype=Appendix&subtype=B -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph IE72 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_IE72&doctype=Illustrative%20Examples -URIDate 2020-01-01 + Details
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- Definition The amount recognised as of the acquisition date for net identifiable assets acquired or liabilities assumed in a business combination. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B64 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph IE72 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_IE72&doctype=Illustrative%20Examples -URIDate 2020-01-01 + Details
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- Definition The amount recognised as of the acquisition date for inventory acquired in a business combination. [Refer: Inventories; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B64 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph IE72 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_IE72&doctype=Illustrative%20Examples -URIDate 2020-01-01 + Details
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- Definition The amount recognised as of the acquisition date for plant, property and equipment acquired in a business combination. [Refer: Property, plant and equipment; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph B64 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Paragraph IE72 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&anchor=para_IE72&doctype=Illustrative%20Examples -URIDate 2020-01-01 + Details
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