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Factoring of Accounts Receivable (Details) - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2025 | Mar. 31, 2024
Factoring of Accounts Receivable [Abstract] |  |
Accounts receivable sold | $ 9.4 | $ 24.4

X
- Definition Accounts Receivable Sold without Recourse + References No definition available. + Details
Name: | amkr_AccountsReceivableSoldwithoutRecourse
Namespace Prefix: | amkr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Factoring of Accounts Receivable [Abstract] + References No definition available. + Details
Name: | amkr_FactoringofAccountsReceivableAbstract
Namespace Prefix: | amkr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration