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Fair Value Loss on Remeasurement (Details) (USD $) In Millions, unless otherwise specified |  |  | 12 Months Ended
--- | --- | --- | ---
Dec. 31, 2011 Fair Value, Inputs, Level 3 [Member] | Dec. 31, 2010 Fair Value, Inputs, Level 3 [Member] | Dec. 31, 2010 Detroit Manufacturing Complex [Member] | Dec. 31, 2010 Detroit Manufacturing Complex [Member] Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |  |
Write-down of assets classified as held-for-sale |  |  |  | $ 5.1
Write-down on held-for-sale assets recorded in SG&A |  |  | 3.3 |
Write-down on held-for-sale assets recognized in COS |  |  | 1.8 |
Other Assets, Fair Value Disclosure | $ 0 | $ 0 |  | $ 1.1

X
- Definition Represents the total loss recognized on the write-down of assets reclassified from property, plant and equipment to assets held-for-sale to their estimated fair value using level 1 inputs. + References No definition available. + Details
Name: | axl_WriteDownOfAssetsClassifiedAsHeldForSale
Namespace Prefix: | axl_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents loss recognized in cost of goods sold related to the write-down of assets reclassified from property, plant and equipment to assets held-for-sale to their estimated fair value using level 1 inputs. + References No definition available. + Details
Name: | axl_WriteDownOnHeldForSaleAssetsRecognizedInCos
Namespace Prefix: | axl_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents loss recognized in selling, general and administrative expenses related to the write-down of assets reclassified from property, plant and equipment to assets held-for-sale to their estimated fair value using level 1 inputs. + References No definition available. + Details
Name: | axl_WriteDownOnHeldForSaleAssetsRecordedInSga
Namespace Prefix: | axl_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

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

X
- Definition This element represents the portion of the balance sheet assertion valued at fair value by the entity whether such amount is presented as a separate caption or as a parenthetical disclosure. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. The element may be used in both the balance sheet and disclosure in the same submission. This element represents the fair value of assets categorized as other which are not in and of themselves material enough to require separate disclosure. + References No definition available. + Details
Name: | us-gaap_OtherAssetsFairValueDisclosure
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant