Basis of Presentation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended	9 Months Ended
Jun. 30, 2012	Sep. 30, 2013
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Decrease to net income attributable to Ameriprise Financial from prior period correction	$ 32	$ (32)

Represents the decrease to net income resulting from an out-of-period correction for a tax-related item.

No definition available.

Name:	amp_DecreaseFromOutOfPeriodCorrectionForTaxRelatedItem
Namespace Prefix:	amp_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration