XML 49 R35.htm IDEA: XBRL DOCUMENT v3.21.2

Financial instruments - Schedule of fair value of assets and liabilities (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020	Jun. 30, 2020	Dec. 31, 2019
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	$ 220	$ 218
Senior Notes Due 2026, 2029, 2030 and 2049
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities, at fair value	2,906	3,036
Measured at amortized cost or cost | Senior Notes Due 2026, 2029, 2030 and 2049
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities, at fair value	2,726	2,726
Level 3 | Contingent consideration liabilities
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	(149)	(157)	$ (192)	$ (243)
Level 3 | Measured at FVOCI | Long-term financial investments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial assets at fair value and amortized cost or cost	37	28	21	31
Level 3 | Measured at FVPL | Long-term financial investments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial assets at fair value and amortized cost or cost	15	24	$ 41	$ 61
Recurring fair value measurement
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	368	355
Current financial assets	717	936
Financial assets at fair value and amortized cost or cost	1,085	1,291
Financial liabilities at fair value and amortized cost	(4,271)	(4,275)
Recurring fair value measurement | Measured at FVPL | Contingent consideration liabilities
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	(149)	(157)
Recurring fair value measurement | Measured at FVPL | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	(4)	(7)
Recurring fair value measurement | Measured at amortized cost or cost
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	(4,118)	(4,111)
Recurring fair value measurement | Measured at amortized cost or cost | Non-current financial debt
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	(3,986)	(3,949)
Recurring fair value measurement | Measured at amortized cost or cost | Current financial debt
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	(132)	(162)
Recurring fair value measurement | Measured at FVOCI | Long-term financial investments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	37	28
Recurring fair value measurement | Measured at FVPL | Long-term financial investments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	10	12
Recurring fair value measurement | Measured at FVPL | Deferred compensation assets
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	148	137
Recurring fair value measurement | Measured at FVPL | Money market funds
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	445	625
Recurring fair value measurement | Measured at FVPL | Current portion of long-term financial investments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	5	12
Recurring fair value measurement | Measured at FVPL | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	3	3
Recurring fair value measurement | Measured at amortized cost or cost
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	173	178
Current financial assets	264	296
Financial assets at fair value and amortized cost or cost	437	474
Recurring fair value measurement | Measured at amortized cost or cost | Long-term receivables from customers
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	113	117
Current financial assets	105	107
Recurring fair value measurement | Measured at amortized cost or cost | Minimum lease payments from finance lease agreements
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	38	39
Current financial assets	30	29
Recurring fair value measurement | Measured at amortized cost or cost | Long-term loans, advances and security deposits
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	22	22
Recurring fair value measurement | Measured at amortized cost or cost | Other receivables, security deposits and current assets
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	62	88
Recurring fair value measurement | Measured at amortized cost or cost | VAT receivables
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	67	72
Recurring fair value measurement | Level 1
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	148	137
Current financial assets	445	625
Financial assets at fair value and amortized cost or cost	593	762
Financial liabilities at fair value and amortized cost	0	0
Recurring fair value measurement | Level 1 | Measured at FVPL | Contingent consideration liabilities
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	0	0
Recurring fair value measurement | Level 1 | Measured at FVPL | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	0	0
Recurring fair value measurement | Level 1 | Measured at amortized cost or cost | Non-current financial debt
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	0	0
Recurring fair value measurement | Level 1 | Measured at amortized cost or cost | Current financial debt
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	0	0
Recurring fair value measurement | Level 1 | Measured at FVOCI | Long-term financial investments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Recurring fair value measurement | Level 1 | Measured at FVPL | Long-term financial investments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Recurring fair value measurement | Level 1 | Measured at FVPL | Deferred compensation assets
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	148	137
Recurring fair value measurement | Level 1 | Measured at FVPL | Money market funds
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	445	625
Recurring fair value measurement | Level 1 | Measured at FVPL | Current portion of long-term financial investments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	0	0
Recurring fair value measurement | Level 1 | Measured at FVPL | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	0	0
Recurring fair value measurement | Level 1 | Measured at amortized cost or cost | Long-term receivables from customers
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Current financial assets	0	0
Recurring fair value measurement | Level 1 | Measured at amortized cost or cost | Minimum lease payments from finance lease agreements
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Current financial assets	0	0
Recurring fair value measurement | Level 1 | Measured at amortized cost or cost | Long-term loans, advances and security deposits
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Recurring fair value measurement | Level 1 | Measured at amortized cost or cost | Other receivables, security deposits and current assets
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	0	0
Recurring fair value measurement | Level 1 | Measured at amortized cost or cost | VAT receivables
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	0	0
Recurring fair value measurement | Level 2
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Current financial assets	3	3
Financial assets at fair value and amortized cost or cost	3	3
Financial liabilities at fair value and amortized cost	(4)	(7)
Recurring fair value measurement | Level 2 | Measured at FVPL | Contingent consideration liabilities
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	0	0
Recurring fair value measurement | Level 2 | Measured at FVPL | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	(4)	(7)
Recurring fair value measurement | Level 2 | Measured at amortized cost or cost | Non-current financial debt
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	0	0
Recurring fair value measurement | Level 2 | Measured at amortized cost or cost | Current financial debt
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	0	0
Recurring fair value measurement | Level 2 | Measured at FVOCI | Long-term financial investments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Recurring fair value measurement | Level 2 | Measured at FVPL | Long-term financial investments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Recurring fair value measurement | Level 2 | Measured at FVPL | Deferred compensation assets
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Recurring fair value measurement | Level 2 | Measured at FVPL | Money market funds
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	0	0
Recurring fair value measurement | Level 2 | Measured at FVPL | Current portion of long-term financial investments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	0	0
Recurring fair value measurement | Level 2 | Measured at FVPL | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	3	3
Recurring fair value measurement | Level 2 | Measured at amortized cost or cost | Long-term receivables from customers
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Current financial assets	0	0
Recurring fair value measurement | Level 2 | Measured at amortized cost or cost | Minimum lease payments from finance lease agreements
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Current financial assets	0	0
Recurring fair value measurement | Level 2 | Measured at amortized cost or cost | Long-term loans, advances and security deposits
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Recurring fair value measurement | Level 2 | Measured at amortized cost or cost | Other receivables, security deposits and current assets
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	0	0
Recurring fair value measurement | Level 2 | Measured at amortized cost or cost | VAT receivables
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	0	0
Recurring fair value measurement | Level 3
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	47	40
Current financial assets	5	12
Financial assets at fair value and amortized cost or cost	52	52
Financial liabilities at fair value and amortized cost	(149)	(157)
Recurring fair value measurement | Level 3 | Measured at FVPL | Contingent consideration liabilities
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	(149)	(157)
Recurring fair value measurement | Level 3 | Measured at FVPL | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	0	0
Recurring fair value measurement | Level 3 | Measured at amortized cost or cost | Non-current financial debt
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	0	0
Recurring fair value measurement | Level 3 | Measured at amortized cost or cost | Current financial debt
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Financial liabilities at fair value and amortized cost	0	0
Recurring fair value measurement | Level 3 | Measured at FVOCI | Long-term financial investments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	37	28
Recurring fair value measurement | Level 3 | Measured at FVPL | Long-term financial investments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	10	12
Recurring fair value measurement | Level 3 | Measured at FVPL | Deferred compensation assets
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Recurring fair value measurement | Level 3 | Measured at FVPL | Money market funds
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	0	0
Recurring fair value measurement | Level 3 | Measured at FVPL | Current portion of long-term financial investments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	5	12
Recurring fair value measurement | Level 3 | Measured at FVPL | Derivative financial instruments
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	0	0
Recurring fair value measurement | Level 3 | Measured at amortized cost or cost | Long-term receivables from customers
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Current financial assets	0	0
Recurring fair value measurement | Level 3 | Measured at amortized cost or cost | Minimum lease payments from finance lease agreements
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Current financial assets	0	0
Recurring fair value measurement | Level 3 | Measured at amortized cost or cost | Long-term loans, advances and security deposits
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Non-current financial assets	0	0
Recurring fair value measurement | Level 3 | Measured at amortized cost or cost | Other receivables, security deposits and current assets
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	0	0
Recurring fair value measurement | Level 3 | Measured at amortized cost or cost | VAT receivables
Disclosure Of Fair Value Measurement Of Assets And Liabilities [Line Items]
Current financial assets	$ 0	$ 0

X

- Definition

[Line Items] for Disclosure of fair value measurement of assets and liabilities [Table]

+ References

No definition available.

+ Details

Name:	alc_DisclosureOfFairValueMeasurementOfAssetsAndLiabilitiesLineItems
Namespace Prefix:	alc_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

The amount of current financial assets. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 25
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_25&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_CurrentFinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of assets that are: (a) cash; (b) an equity instrument of another entity; (c) a contractual right: (i) to receive cash or another financial asset from another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially favourable to the entity; or (d) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to receive a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose the entity’s own equity instruments do not include puttable financial instruments classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. [Refer: Financial instruments, class [member]; Financial liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 25
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_25&doctype=Standard
-URIDate 2020-01-01

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 35H
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_35H&doctype=Standard
-URIDate 2020-01-01

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 35I
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_35I&doctype=Standard
-URIDate 2020-01-01

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 35M
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_35M&doctype=Standard
-URIDate 2020-01-01

Reference 5: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 35N
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_35N&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_FinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

The amount of liabilities that are: (a) a contractual obligation: (i) to deliver cash or another financial asset to another entity; or (ii) to exchange financial assets or financial liabilities with another entity under conditions that are potentially unfavourable to the entity; or (b) a contract that will, or may be, settled in the entity’s own equity instruments and is: (i) a non-derivative for which the entity is, or may be, obliged to deliver a variable number of the entity’s own equity instruments; or (ii) a derivative that will, or may be, settled other than by the exchange of a fixed amount of cash or another financial asset for a fixed number of the entity’s own equity instruments. For this purpose, rights, options or warrants to acquire a fixed number of the entity’s own equity instruments for a fixed amount of any currency are equity instruments if the entity offers the rights, options or warrants pro rata to all of its existing owners of the same class of its own non-derivative equity instruments. Also, for those purposes the entity’s own equity instruments do not include puttable financial instruments that are classified as equity instruments in accordance with paragraphs 16A-16B of IAS 32, instruments that impose on the entity an obligation to deliver to another party a pro rata share of the net assets of the entity only on liquidation and are classified as equity instruments in accordance with paragraphs 16C-16D of IAS 32, or instruments that are contracts for the future receipt or delivery of the entity’s own equity instruments. As an exception, an instrument that meets the definition of a financial liability is classified as an equity instrument if it has all the features and meets the conditions in paragraphs 16A-16B or paragraphs 16C-16D of IAS 32. [Refer: Financial instruments, class [member]; Financial assets; Derivatives [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 25
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_25&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_FinancialLiabilities
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The fair value of financial liabilities. [Refer: At fair value [member]; Financial liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 25
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_25&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_FinancialLiabilitiesAtFairValue
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- Definition

The amount of non-current financial assets. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 7
-IssueDate 2020-01-01
-Paragraph 25
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2020-en-r&anchor=para_25&doctype=Standard
-URIDate 2020-01-01

+ Details

Name:	ifrs-full_NoncurrentFinancialAssets
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Details

Name:	ifrs-full_BorrowingsByNameAxis=alc_SeniorNotesDue202620292030And2049Member
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialLiabilitiesAxis=ifrs-full_FinancialLiabilitiesAtAmortisedCostCategoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level3OfFairValueHierarchyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialLiabilitiesAxis=alc_FinancialLiabilitiesContingentConsiderationLiabilitiesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_FinancialAssetsMeasuredAtFairValueThroughOtherComprehensiveIncomeCategoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=alc_FinancialAssetsLongtermFinancialInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_MeasurementAxis=ifrs-full_RecurringFairValueMeasurementMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialLiabilitiesAxis=ifrs-full_FinancialLiabilitiesAtFairValueThroughProfitOrLossCategoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialLiabilitiesAxis=alc_FinancialLiabilitiesDerivativesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialLiabilitiesAxis=alc_FinancialLiabilitiesNoncurrentBorrowingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialLiabilitiesAxis=alc_FinancialLiabilitiesCurrentBorrowingsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=alc_DeferredCompensationAssetsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=alc_FinancialAssetsMoneyMarketFundsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=alc_FinancialAssetsCurrentPortionOfLongtermFinancialInvestmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=ifrs-full_DerivativesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_FinancialAssetsAtAmortisedCostCategoryMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=alc_FinancialAssetsLongtermReceivablesFromCustomersMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=alc_FinancialAssetsMinimumLeasePaymentsFromFinanceLeaseAgreementsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=alc_FinancialAssetsNonCurrentLoansAdvancesAndSecurityDepositsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=alc_FinancialAssetsOtherMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_ClassesOfFinancialAssetsAxis=alc_FinancialAssetsVATReceivablesMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level1OfFairValueHierarchyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	ifrs-full_LevelsOfFairValueHierarchyAxis=ifrs-full_Level2OfFairValueHierarchyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: