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Acquisitions of businesses (Details) - USD ($) $ in Millions | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Amounts recognised as of acquisition date for each major class of assets acquired and liabilities assumed [line items] |  |  |
Property, plant and equipment | $ 26 | $ 44 | $ 137
Right-of-use assets | 32 |  |
Currently marketed products | 196 | 3,550 | 2,531
Acquired research and development | 8,600 | 342 | 10,224
Other intangible assets | 218 | 22 | 1
Deferred tax assets | 476 | 60 | 381
Non-current financial and other assets | 49 | 8 | 19
Inventories | 84 | 195 | 20
Trade receivables and financial and other current assets | 109 | 4 | 90
Cash and cash equivalents | 76 |  | 1,112
Deferred tax liabilities | (1,977) | (107) | (2,874)
Current and non-current financial debts | (32) | (2) | (14)
Current and non-current lease liabilities | (44) |  |
Trade payables and other liabilities | (144) | (178) | (627)
Net identifiable assets acquired | 7,669 | 3,938 | 11,000
Acquired cash and cash equivalents | (76) |  | (1,112)
Non-controlling interests |  |  | (26)
Goodwill | 2,580 | 186 | 4,084
Net assets recognized as a result of acquisitions of business | 10,173 | 4,124 | 13,946
Goodwill expected to be deductible for tax purposes | $ 74 | $ 98 | $ 0

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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 2019-01-01 -Paragraph B64 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2019-03-27 + 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 2019-01-01 -Paragraph B64 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
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- Definition The amount recognised as of the acquisition date for financial liabilities assumed in a business combination. [Refer: Financial liabilities; Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph B64 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph IE72 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_IE72&doctype=Illustrative%20Examples -URIDate 2019-03-27 + 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 2019-01-01 -Paragraph B64 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph IE72 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_IE72&doctype=Illustrative%20Examples -URIDate 2019-03-27 + 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 2019-01-01 -Paragraph B64 -Subparagraph i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_i&doctype=Appendix&subtype=B -URIDate 2019-03-27 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph IE72 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_IE72&doctype=Illustrative%20Examples -URIDate 2019-03-27 + Details
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- Definition The amount of non-controlling interest in the acquiree recognised at the acquisition date for business combinations in which the acquirer holds less than 100 per cent of the equity interests in the acquiree at the acquisition date. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2019-01-01 -Paragraph B64 -Subparagraph o -Clause i -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2019-en-r&anchor=para_B64_o_i&doctype=Appendix&subtype=B -URIDate 2019-03-27 + Details
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