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Earnings Per Share Exercisable Stock Options Excluded from Computation of EPS (Narrative) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010
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Earnings Per Share, Stock Options Excluded from the Calculation of Diluted EPS | 3.3 | 4.0 | 4.8
Earnings Per Share, Range of Exercise Prices of Stock Options Excluded from the Calculation of Diluted EPS, Lower End of Range | $ 15.58 | $ 15.56 | $ 10.08
Earnings Per Share, Range of Exercise Prices of Stock Options Excluded from the Calculation of Diluted EPS, Upper End of Range | $ 40.83 | $ 40.83 | $ 40.83

X
- Definition Represents the lower end of the range of exercise prices of stock options excluded from the calculation of diluted EPS during the period because the exercise price of these stock options was greater than the average annual market price of our stock. + References No definition available. + Details
Name: | axl_EarningsPerShareRangeOfExercisePricesOfStockOptionsExcludedFromCalculationOfDilutedEpsLowerEndOfRange
Namespace Prefix: | axl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the upper end of the range of exercise prices of stock options excluded from the calculation of diluted EPS during the period because the exercise price of these stock options was greater than the average annual market price of our stock. + References No definition available. + Details
Name: | axl_EarningsPerShareRangeOfExercisePricesOfStockOptionsExcludedFromCalculationOfDilutedEpsUpperEndOfRange
Namespace Prefix: | axl_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the number of exercisable stock options that were excluded from the calculation of diluted EPS because the exercise price was greater than the average annual market price of our stock. + References No definition available. + Details
Name: | axl_EarningsPerShareStockOptionsExcludedFromCalculationOfDilutedEps
Namespace Prefix: | axl_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | instant