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Long-Term Debt Investment Income (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Gain on Distribution of Short Term Investments for which Redemptions were Previously Suspended	$ 0.1	$ 2.3

X

- Definition

Represents the gain recorded during the period associated with distributions from certain short term investments for which redemptions had previously been suspended and an other-than-temporary-impairment had been recorded.

+ References

No definition available.

+ Details

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Namespace Prefix:	axl_
Data Type:	xbrli:monetaryItemType
Balance Type:	na
Period Type:	duration

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- Details

Name:	us-gaap_ScheduleOfInvestmentIncomeReportedAmountsByCategoryLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration