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Selected accounting policies | 6 Months Ended
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Jun. 30, 2021
Corporate Information And Statement Of IFRS Compliance [Abstract] |
Selected accounting policies | Selected accounting policies Alcon's principal accounting policies are set out in Note 3 to the Consolidated Financial Statements in the Form 20-F. The preparation of financial statements requires management to make subjective and complex judgments that affect the reported amounts. Because of the inherent uncertainties, actual outcomes and results may differ from management's assumptions and estimates. As discussed in Note 3 to the Consolidated Financial Statements in the Form 20-F, Goodwill, the Alcon brand name and acquired In-process research & development projects are reviewed for impairment at least annually and these, as well as all other investments in intangible assets, are reviewed for impairment whenever events or changes in circumstance indicate that the asset's balance sheet or reportable segment carrying amount may not be recoverable. Goodwill and other intangible assets represent a significant amount of total assets on the consolidated balance sheet. Impairment testing may lead to potentially significant impairment charges in the future, which could have a materially adverse impact on Alcon's results of operations and financial condition. Impact of the coronavirus (“COVID-19”) pandemic In March 2020, the World Health Organization declared the outbreak of COVID-19 a pandemic. The COVID-19 pandemic has negatively impacted the global economy, disrupted global supply chains and created significant volatility and disruption of financial markets, resulting in widespread shelter-in-place orders, business shut-downs and the deferral of non-urgent surgeries. Outbreaks of COVID-19 cases have continued to occur in 2021 and localized responses remain unpredictable. This has had, and may continue to have, an adverse effect on our net sales, operating results and cash flow. The extent to which the COVID-19 pandemic and the related economic impact may continue to affect our financial condition or results of operations is uncertain. We have analyzed the impact of the COVID-19 pandemic on our financial statements for the three and six months ended June 30, 2021 and 2020, respectively. We have assessed various accounting estimates and other matters, including those that require consideration of forecasted financial information, in the context of the unknown future impacts of COVID-19 using information reasonably available to us at this time. The accounting estimates and other matters assessed included, but were not limited to, provisions for expected credit losses, goodwill and other intangible assets, financial instruments, inventory provisions, associate benefits, income taxes and revenue recognition. Based on our assessment performed, the resulting provisions recorded were not material to our Condensed Consolidated Interim Financial Statements for the three or six months ended June 30, 2021 or 2020, respectively. However, the inherent uncertainties of COVID-19 including the duration, scope, and severity of the pandemic may result in actual outcomes that differ materially from our current assumptions and estimates.

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- Definition Corporate Information And Statement Of IFRS Compliance [Abstract] + References No definition available. + Details
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- Definition The entire disclosure for significant accounting policies applied by the entity. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 117 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_117&doctype=Standard -URIDate 2020-01-01 + Details
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