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Organization and Summary of Significant Accounting Policies - Maintenance, Repair and Operations (MRO) Materials (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Maintenance, Repair and Operations (MRO) Materials [Abstract] |  |  |
Maintenance, Repair and Operations (MRO) Materials Amortization | $ 62.4 | $ 67.7 | $ 62.4

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- Definition Maintenance, Repair and Operations (MRO) Materials [Abstract] + 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 Maintenance, Repair and Operations (MRO) Materials Amortization + References No definition available. + Details
Name: | axl_MaintenanceRepairandOperationsMROMaterialsAmortization
Namespace Prefix: | axl_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration