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Commitments and Contingencies Purchase Obligations (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2011 | Dec. 31, 2010
--- | --- | ---
Long-term Purchase Commitment [Line Items] |  |
Purchase Commitments | $ 127.5 | $ 94.4

X
- Definition Represents the amount of obligated purchase commitments for capital expenditures and related project expenses as of the reporting date. + References No definition available. + Details
Name: | axl_PurchaseCommitments
Namespace Prefix: | axl_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | instant

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