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Document and Entity Information - USD ($)
$ in Billions
12 Months Ended
Dec. 31, 2017
Feb. 09, 2018
Jun. 30, 2017
Document and Entity Information      
Entity Registrant Name AMERIPRISE FINANCIAL INC    
Entity Central Index Key 0000820027    
Current Fiscal Year End Date --12-31    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Document Type 10-K    
Document Period End Date Dec. 31, 2017    
Document Fiscal Year Focus 2017    
Document Fiscal Period Focus FY    
Amendment Flag false    
Entity Public Float     $ 0.0
Entity Common Stock, Shares Outstanding   146,332,164  
Entity Voluntary Filers No    
Entity Well-known Seasoned Issuer Yes