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Employee Benefit Plans Terminated Vested Lump Sum Payout Offer (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
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Dec. 31, 2014
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] |
Defined Benefit Plan, Assets Transferred to (from) Plan | $ 104.2 axl_LumpSumDistributionfromPensionTrust

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- Definition Lump Sum Distribution from Pension Trust + References No definition available. + Details
Name: | axl_LumpSumDistributionfromPensionTrust
Namespace Prefix: | axl_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

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- Details
Name: | us-gaap_DefinedBenefitPlansAndOtherPostretirementBenefitPlansTableTextBlockLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration