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Income Taxes (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Mar. 31, 2013	Sep. 30, 2014	Sep. 30, 2013
Income tax expense	$ 7.5us-gaap_IncomeTaxExpenseBenefit	$ 6.1us-gaap_IncomeTaxExpenseBenefit		$ 25.8us-gaap_IncomeTaxExpenseBenefit	$ 9.1us-gaap_IncomeTaxExpenseBenefit
Effective income tax rate, continuing operations	14.60%us-gaap_EffectiveIncomeTaxRateContinuingOperations	16.10%us-gaap_EffectiveIncomeTaxRateContinuingOperations		16.60%us-gaap_EffectiveIncomeTaxRateContinuingOperations	12.30%us-gaap_EffectiveIncomeTaxRateContinuingOperations
Unrecognized tax benefits, reductions resulting from lapse of applicable statute of limitations			1.5us-gaap_UnrecognizedTaxBenefitsReductionsResultingFromLapseOfApplicableStatuteOfLimitations
Income tax expense (benefit), other		0axl_IncomeTaxExpenseBenefitOther			3.3axl_IncomeTaxExpenseBenefitOther
Unrecognized tax benefits, decreases resulting from settlements with taxing authorities					$ 4.7us-gaap_UnrecognizedTaxBenefitsDecreasesResultingFromSettlementsWithTaxingAuthorities

X

- Definition

Income tax expense (benefit) recorded during the period that relates to certain discrete, unusual or infrequently occurring items.

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- Definition

Percentage of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

+ References

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-Publisher FASB

-Name Accounting Standards Codification

-Topic 740

-SubTopic 10

-Section 50

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Amount of current income tax expense (benefit) and deferred income tax expense (benefit) pertaining to continuing operations.

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Amount of decrease in unrecognized tax benefits resulting from settlements with taxing authorities.

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Amount of decrease in unrecognized tax benefits resulting from lapses of applicable statutes of limitations.

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