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Fair Value Impairments of Long-lived Assets Measured at Fair Value on a Nonrecurring Basis (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Asset impairment charges	$ 0us-gaap_AssetImpairmentCharges	$ 0us-gaap_AssetImpairmentCharges	$ 5.8us-gaap_AssetImpairmentCharges
Payments to acquire equipment on lease				18.6us-gaap_PaymentsToAcquireEquipmentOnLease
Change in Fair Value from Asset Impairment [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Asset impairment charges			5.8us-gaap_AssetImpairmentCharges / us-gaap_FairValueByMeasurementBasisAxis = axl_ChangeInFairValueFromAssetImpairmentMember
Fair Value, Inputs, Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Property, plant, and equipment, fair value disclosure			$ 0us-gaap_PropertyPlantAndEquipmentFairValueDisclosure / us-gaap_FairValueByMeasurementBasisAxis = us-gaap_FairValueInputsLevel3Member

X

- Definition

Amount of write-down of assets recognized in the income statement. Includes, but is not limited to, losses from tangible assets, intangible assets and goodwill.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 28

-Subparagraph (b)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 360

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=8077374&loc=d3e2420-110228

+ Details

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X

- Definition

The cash outflow for payments to acquire rented equipment which is recorded as an asset.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Glossary Investing Activities

-URI http://asc.fasb.org/extlink&oid=6516133



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 230

-SubTopic 10

-Section 45

-Paragraph 13

-Subparagraph (c)

-URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3213-108585

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X

- Definition

Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 1

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19190-110258

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