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Commitments and Contingencies (Details) $ in Millions	Sep. 30, 2023 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Amount of leases not yet commenced	$ 11

X

- Definition

Lessee, Lease Not Yet Commenced, Liability

+ References

No definition available.

+ Details

Name:	amkr_LesseeLeaseNotYetCommencedLiability
Namespace Prefix:	amkr_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

X

- References

No definition available.

+ Details

Name:	us-gaap_CommitmentsAndContingenciesDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration