SCHEDULE I - CONDENSED FINANCIAL INFORMATION OF REGISTRANT (Footnotes) (Details 4) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Ameriprise Financial, Inc:
Guarantees, Commitments and Contingencies
Maximum borrowing capacity under the line of credit	$ 366
Debt
Repurchase agreements, debt	50	$ 50
Short-term borrowings	150	150
Current borrowing capacity under the line of credit	1,000
Outstanding line of credit with parent as borrower	0
Accounting Changes and Error Corrections [Abstract]
Proceeds from Lines of Credit	15	0	$ 3
Ameriprise Certificate Company [Member] | Ameriprise Financial, Inc:
Guarantees, Commitments and Contingencies
Maximum commitment under Capital Support Agreement	50
IDS Property Casualty [Member] | Ameriprise Financial, Inc:
Guarantees, Commitments and Contingencies
Maximum commitment under Capital Support Agreement	150
Ameriprise Financial Services, Inc. [Member] | Ameriprise Financial, Inc:
Guarantees, Commitments and Contingencies
Secured demand notes	$ 200
Assets Held under Capital Leases [Member]
Accounting Changes and Error Corrections [Abstract]
Quantifying Misstatement in Current Year Financial Statements, Amount			(70)
Assets Held under Capital Leases [Member] | Ameriprise Financial, Inc:
Accounting Changes and Error Corrections [Abstract]
Quantifying Misstatement in Current Year Financial Statements, Amount		(70)
Capital Lease Obligations [Member]
Accounting Changes and Error Corrections [Abstract]
Quantifying Misstatement in Current Year Financial Statements, Amount			$ (60)
Capital Lease Obligations [Member] | Ameriprise Financial, Inc:
Accounting Changes and Error Corrections [Abstract]
Quantifying Misstatement in Current Year Financial Statements, Amount		(60)
Retained Earnings [Member] | Ameriprise Financial, Inc:
Accounting Changes and Error Corrections [Abstract]
Quantifying Misstatement in Current Year Financial Statements, Amount		$ (10)