XML 65 R50.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Summary of Significant Accounting Policies - Schedule of Revenue Related Reserves Included in Consolidated Balance Sheets (Details) - USD ($) $ in Thousands | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
--- | --- | --- | --- | ---
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Revenue-related reserves | $ 336,427 | $ 314,332 | $ 290,520 | $ 267,808
Reduction of Accounts Receivable |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Revenue-related reserves | 22,031 | 11,510 |  |
Components of Accrued Sales Discounts, Allowances and Reserves |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Revenue-related reserves | 272,452 | 263,641 |  |
Components of Other Long-term Liabilities |  |  |  |
Summary Of Significant Accounting Policies [Line Items] |  |  |  |
Revenue-related reserves | $ 41,944 | $ 39,181 |  |

X
- Definition provisions for sales and allowances. + References No definition available. + Details
Name: | alks_ProvisionsForSalesAndAllowances
Namespace Prefix: | alks_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Summary of significant accounting policies. + References No definition available. + Details
Name: | alks_SummaryOfSignificantAccountingPoliciesLineItems
Namespace Prefix: | alks_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_AccountsReceivableMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherCurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherNoncurrentLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |