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Non-current and current financial debts (Tables) | 12 Months Ended
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Dec. 31, 2020
Financial Instruments [Abstract] |
Schedule of financial debts | The below table summarizes non-current and current Financial debts outstanding as of December 31, 2020 and 2019.
($ millions) | 2020 | 2019
Non-current financial debts |  |
Facility B | 794 |  | 793 |
Facility C | 429 |  | 391 |
Local facilities (Japan) | — |  | 55 |
Series 2026 notes | 496 |  | 495 |
Series 2029 notes | 992 |  | 991 |
Series 2030 notes | 744 |  | — |
Series 2049 notes | 494 |  | 493 |
Revolving facility | — |  | — |
Total non-current financial debts | 3,949 |  | 3,218 |
Current financial debts |  |
Local facilities: |  |
Japan | 101 |  | 115 |
All others | 49 |  | 101 |
Other short-term financial debts | 12 |  | 29 |
Derivatives | 7 |  | 16 |
Total current financial debts | 169 |  | 261 |
Total financial debts | 4,118 |  | 3,479 |
Disclosure of maturity analysis for non-derivative financial liabilities [text block] | The contractual maturities of the undiscounted lease liabilities as of December 31, 2020 and December 31, 2019, are as follows:
| Lease liabilities undiscounted
($ millions) | 2020 | 2019
Not later than one year | 82 | 73
Between one and five years | 203 |  | 176 |
Later than five years | 203 |  | 200 |
Total lease liabilities undiscounted | 488 |  | 449 |
| Lease liabilities
($ millions) | 2020 | 2019
Not later than one year | 70 | 61
Between one and five years | 168 |  | 140 |
Later than five years | 147 |  | 140 |
Total lease liabilities | 385 |  | 341 |
The following table provides details on the maturity of the contractual undiscounted cash flows for Alcon's borrowings as of December 31, 2020 and 2019:
| 2020 |  | 2019
($ millions) | Nominal amount - Current and non-current financial debt | Derivatives | Total |  | Nominal amount - Current and non-current financial debt | Derivatives | Total
Not later than one year | 162 |  | 7 |  | 169 |  |  | 245 |  | 16 |  | 261 |
Between one and five years | 1,231 |  | — |  | 1,231 |  |  | 1,247 |  | — |  | 1,247 |
Later than five years | 2,750 |  | — |  | 2,750 |  |  | 2,000 |  | — |  | 2,000 |
Total cash flows | 4,143 |  | 7 |  | 4,150 |  |  | 3,492 |  | 16 |  | 3,508 |
Unamortized debt discount and issuance costs | (32) |  | — |  | (32) |  |  | (29) |  | — |  | (29) |
Total carrying value | 4,111 |  | 7 | 4,118 |  | 3,463 | 16 | 3,479 |
The following table provides details on the maturity of the future contractual interest payments commitments as of December 31, 2020 and 2019:
($ millions) | 2020 | 2019
Not later than one year | 96 |  | 94 |
Between one and five years | 357 |  | 336 |
Later than five years | 687 |  | 653 |
Total cash flows | 1,140 |  | 1,083 |

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- Definition Financial Instruments + References No definition available. + Details
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- Definition The disclosure of detailed information about borrowings. [Refer: Borrowings] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph 7 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_7&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The disclosure of a maturity analysis for non-derivative financial liabilities (including issued financial guarantee contracts) that shows the remaining contractual maturities. [Refer: Derivative financial liabilities] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 7 -IssueDate 2020-01-01 -Paragraph 39 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_39_a&doctype=Standard -URIDate 2020-01-01 + Details
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