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Income Taxes Current Deferred Tax Assets and Liabilities Recognized in Balance Sheet (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2014	Dec. 31, 2013
Current deferred tax asset, net	$ 40.1us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent	$ 36.3us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent
Domestic [Member]
Current deferred tax asset, net	27.0us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / us-gaap_StatementGeographicalAxis = axl_DomesticMember	17.1us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / us-gaap_StatementGeographicalAxis = axl_DomesticMember
Foreign [Member]
Current deferred tax asset, net	$ 13.1us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / us-gaap_StatementGeographicalAxis = axl_ForeignMember	$ 19.2us-gaap_DeferredTaxAssetsLiabilitiesNetCurrent / us-gaap_StatementGeographicalAxis = axl_ForeignMember

X

- Definition

Amount after allocation of valuation allowances of deferred tax asset attributable to deductible temporary differences and carryforwards, net of deferred tax liability attributable to taxable temporary differences expected to be realized or consumed within one year or operating cycle, if longer.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 45

-Paragraph 4

-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31917-109318



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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

-Paragraph 2

-URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319



Reference 3: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 45

-Paragraph 6

-URI http://asc.fasb.org/extlink&oid=37586315&loc=d3e31931-109318

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