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Income Taxes Significant Change in Unrecognized Tax Benefits is Reasonably Possible (Narrative) (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2011
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Significant Change in Unrecognized Tax Benefits is Reasonably Possible [Line Items] |
Unrecognized Tax Benefits, Uncertainty Associated with Timing of Deductibility | $ 17.4

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- Definition Represents an amount for which deductibility is highly certain but for which there is uncertainty about the timing of such deductibility. + References No definition available. + Details
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Namespace Prefix: | axl_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

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