XML 66 R59.htm IDEA: XBRL DOCUMENT v2.4.0.6

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