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Fair value measurement with unobservable inputs reconciliation recurring basis liability addition of contingent consideration post combination expense.

No definition available.

Name:	alks_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityAdditionOfContingentConsiderationPostCombinationExpense
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Fair value measurement with unobservable inputs reconciliation recurring basis liability addition of contingent consideration transferred.

No definition available.

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Fair value measurement with unobservable inputs reconciliation recurring basis liability change in contingent consideration post combination expense.

No definition available.

Name:	alks_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityChangeInContingentConsiderationPostCombinationExpense
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Fair value measurement with unobservable inputs reconciliation recurring basis liability change in contingent consideration transferred.

No definition available.

Name:	alks_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisLiabilityChangeInContingentConsiderationTransferred
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- References

No definition available.

Name:	us-gaap_FairValueDisclosuresAbstract
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Fair value of financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 3
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-3

Reference 2: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 101
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-101

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

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Fair value of financial instrument classified as a liability measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing.