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Acquisitions of businesses (Tables) | 12 Months Ended
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Dec. 31, 2020
Business Combinations1 [Abstract] |
Disclosure of fair value of assets and liabilities arising from acquisitions |
($ millions) | 2020 |  | 2019 |  | 2018 |  |
Property, plant & equipment | — |  |  | 1 |  |  | 1 |  |  |
Currently marketed products | — |  |  | — |  |  | 346 |  |  |
Acquired research & development | — |  |  | 505 |  |  | — |  |  |
Deferred tax assets | — |  |  | 28 |  |  | 12 |  |  |
Inventories | — |  |  | — |  |  | 3 |  |  |
Trade receivables and other current assets | — |  |  | — |  |  | 2 |  |  |
Cash and cash equivalents | — |  |  | 6 |  |  | 5 |  |  |
Deferred tax liabilities | — |  |  | (121) |  |  | (78) |  |  |
Trade payables and other liabilities | — |  |  | (1) |  |  | (4) |  |  |
Net identifiable assets acquired | — |  |  | 418 |  |  | 287 |  |  |
Acquired liquidity | — |  |  | (6) |  |  | (5) |  |  |
Goodwill | — |  |  | 6 |  |  | 4 |  |  |
Net assets recognized as a result of business combinations | — |  |  | 418 |  |  | 286 |  |  |

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- Definition Business Combinations1 [Abstract] + References No definition available. + Details
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- Definition The disclosure of detailed information about business combinations. [Refer: Business combinations [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 3 -IssueDate 2020-01-01 -Section Disclosures application of paragraphs 59 and 61 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=3&code=ifrs-tx-2020-en-r&doctype=Appendix&subtype=B&dita_xref=IFRS03_gB64-B67_TI -URIDate 2020-01-01 + Details
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