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Non-current and current financial debts - Schedule of financial debts (Details) - USD ($) $ in Millions | Dec. 31, 2019 | Dec. 31, 2018
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Disclosure of detailed information about borrowings [line items] |  |  |
Non-current financial debts | [1],[2] | $ 3,218.0 | $ 0.0
Current financial debts |  | 261.0 | 47.0
Total financial debts |  | 3,479.0 | 47.0
Facility B [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Non-current financial debts |  | 793.0 | 0.0
Facility C [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Non-current financial debts |  | 391.0 | 0.0
Local facilities, Japan [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Non-current financial debts |  | 55.0 | 0.0
Current financial debts |  | 115.0 | 0.0
Senior notes due 2026 [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Non-current financial debts |  | 495.0 | 0.0
Senior notes due 2029 [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Non-current financial debts |  | 991.0 | 0.0
Senior notes due 2049 [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Non-current financial debts |  | 493.0 | 0.0
Revolving facility [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Non-current financial debts |  | 0.0 | 0.0
Local facilities, other [Member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Current financial debts |  | 101.0 | 32.0
Other short-term financial debts [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Current financial debts |  | 29.0 | 15.0
Derivatives [member] |  |  |
Disclosure of detailed information about borrowings [line items] |  |  |
Current financial debts |  | 16.0 | $ 0.0
Total financial debts |  | $ 16.0 |
[1] | Alcon adopted IFRS 16, Leases as of January 1, 2019 using the modified retrospective approach as described in Notes 3 and 16 to these Consolidated Financial Statements. Under the modified retrospective approach, comparative information was not restated.
[2] | The December 31, 2018 balances previously reported for a finance lease liability and corresponding asset of $89 million and $79 million, respectively, have been reclassified from "Non-current financial debts" and "Property, Plant, & Equipment" to "Non-current lease liabilities" and "Right-of-use assets", respectively.

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- Definition The amount of outstanding funds that the entity is obligated to repay. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard -URIDate 2019-03-27 + Details
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- Definition The amount of current borrowings and current portion of non-current borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2019-01-01 -Paragraph 55 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_55&doctype=Standard -URIDate 2019-03-27 + Details
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