XML 177 R120.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2

Provisions and other current liabilities - Accruals for deductions from revenue (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Subclassifications of assets, liabilities and equities [abstract]
January 1	$ 194	$ 213	$ 182
Additions	662	603	619
Payments/utilizations	(646)	(613)	(601)
Changes in offset against gross trade receivables	1	2	7
Currency translation effects	1	(11)	6
December 31	$ 212	$ 194	$ 213

X

- Definition

Decrease Through Payments And Utilizations, Current Contract Liabilities

+ References

No definition available.

+ Details

Name:	alc_DecreaseThroughPaymentsAndUtilizationsCurrentContractLiabilities
Namespace Prefix:	alc_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

X

- Definition

Increase (Decrease) Through Changes In Offset Against Receivables, Current Contract Liabilities

+ References

No definition available.

+ Details

Name:	alc_IncreaseDecreaseThroughChangesInOffsetAgainstReceivablesCurrentContractLiabilities
Namespace Prefix:	alc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Increase (Decrease) Through Foreign Exchange, Current Contract Liabilities

+ References

No definition available.

+ Details

Name:	alc_IncreaseDecreaseThroughForeignExchangeCurrentContractLiabilities
Namespace Prefix:	alc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Increase Due To Additions, Current Contract Liabilities

+ References

No definition available.

+ Details

Name:	alc_IncreaseDueToAdditionsCurrentContractLiabilities
Namespace Prefix:	alc_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The amount of current contract liabilities. [Refer: Contract liabilities]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 15
-IssueDate 2019-01-01
-Paragraph 105
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=15&code=ifrs-tx-2019-en-r&anchor=para_105&doctype=Standard
-URIDate 2019-03-27

+ Details

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

X

- References

No definition available.

+ Details

Name:	ifrs-full_SubclassificationsOfAssetsLiabilitiesAndEquitiesAbstract
Namespace Prefix:	ifrs-full_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration