Financing Receivables (Credit Quality Information Text) (Details 2) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Credit quality information [Line Items]
Total loans, gross	$ 3,263	$ 3,275
90 days or more past due
Credit quality information [Line Items]
Nonperforming loans	$ 16	$ 19
Commercial mortgage loans [Member]
Credit quality information [Line Items]
Percentage of commercial mortgage loans with highest risk rating	0.00%	0.00%
Total loans, gross	$ 2,715	$ 2,775
Syndicated loans [Member]
Credit quality information [Line Items]
Loans purchased	221	200	$ 92
Sales of financing receivables	51
Total loans, gross	548	498
Syndicated loans [Member] \| 90 days or more past due
Credit quality information [Line Items]
Nonperforming loans	0	5
Loans to financial advisors [Member]
Credit quality information [Line Items]
Principal amounts outstanding for advisor loans	558	509
Allowance for loan losses related to loans to financial advisors	25	23
Principal amounts outstanding for advisor loans no longer affiliated with the Ameriprise Financial	18	19
Allowance for loan losses related to loans to financial advisors no longer affiliated with Ameriprise Financial	$ 13	12
Consumer loans [Member]
Credit quality information [Line Items]
Sales of financing receivables		$ 267	$ 271

Allowance for loan losses related to loans to financial advisors

No definition available.

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Balance Type:	credit
Period Type:	instant

- Definition

Allowance for loan losses related to loans to financial advisors no longer affiliated with Ameriprise Financial

+ References

No definition available.

+ Details

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- Definition

Represents the percentage of commercial mortgage loans that the company has assigned its highest risk rating.

+ References

No definition available.

+ Details

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Namespace Prefix:	amp_
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- Definition

Principal amounts outstanding for advisor loans

+ References

No definition available.

+ Details

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- Definition

Principal amounts outstanding for advisor loans no longer affiliated with Ameriprise Financial

+ References

No definition available.

+ Details

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

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- Definition

Recorded Investment in financing receivables that are past due at the balance sheet date.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 7A
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953401-111524

+ Details

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- Definition

The amount of any significant purchases of financing receivables during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (e)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

+ Details

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Balance Type:	debit
Period Type:	duration

- Definition

The amount of any significant sales of financing receivables during the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 11B
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953423-111524

+ Details

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Period Type:	duration

- Definition

Amount representing an agreement for an unconditional promise by the maker to pay the entity (holder) a definite sum of money at a future date. Such amount may include accrued interest receivable in accordance with the terms of the note. The note also may contain provisions and related items including a discount or premium, payable on demand, secured, or unsecured, interest bearing or noninterest bearing, among a myriad of other features and characteristics. Excludes amounts related to receivables held-for-sale.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 942
-SubTopic 210
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-03.10(3))
-URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878

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- Details

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- Details

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- Details

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