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Leasing - Leases Not Yet Commenced (Details) $ in Millions	Dec. 31, 2020 USD ($)
Leases not yet commenced [Line Items]
Lessee, Operating and financing leases, Leases not yet commenced	$ 85.2

X

- Definition

[Line Items] for Leases not yet commenced [Table]

+ References

No definition available.

+ Details

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Namespace Prefix:	axl_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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- Definition

Lessee, Operating and financing leases, Leases not yet commenced

+ References

No definition available.

+ Details

Name:	axl_LesseeOperatingAndFinancingLeasesLeasesNotYetCommenced
Namespace Prefix:	axl_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant