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Document and Entity Information (USD $)
 12 Months Ended
Dec. 31, 2011
Feb. 06, 2012
Jun. 30, 2011
Entity Registrant Name AMERICAN AXLE & MANUFACTURING HOLDINGS INC    
Entity Central Index Key 0001062231    
Current Fiscal Year End Date --12-31    
Entity Filer Category Large Accelerated Filer    
Document Fiscal Year Focus 2011    
Document Fiscal Period Focus FY    
Document Period End Date Dec. 31, 2011    
Amendment Flag false    
Document Type 10-K    
Entity Well-known Seasoned Issuer Yes    
Entity Public Float     $ 785,543,909
Entity Common Stock, Shares Outstanding   74,983,587  
Entity Current Reporting Status Yes    
Entity Voluntary Filers No