Financing Receivables (Credit Quality Information Text) (Details)	6 Months Ended	9 Months Ended
Jun. 30, 2020 USD ($) loan	Sep. 30, 2020 USD ($) loan	Dec. 31, 2019 USD ($)
Nonperforming
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans		$ 24,000,000	$ 25,000,000
Commercial mortgage loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans		$ 6,000,000	0
Percentage of commercial mortgage loans with highest risk rating less than %		1.00%
Total loans, gross		$ 2,778,000,000	2,797,000,000
Impaired Financing Receivable, Unpaid Principal Balance	$ 369	$ 127,000,000
Financing Receivable, Modifications, Number of Contracts \| loan	93	25
Syndicated loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Past due loans		$ 6,000,000	1,000,000
Total loans, gross		627,000,000	543,000,000
Loans to financial advisors [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans, gross		693,000,000
Allowance for loan losses related to loans to financial advisors no longer affiliated with Ameriprise Financial		$ 10,000,000	$ 10,000,000
Credit Card Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Credit Card Receivable Percent Past Due		1.00%	2.00%

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

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- Definition

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

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

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- Definition

Percentage of financing receivable balance that is past due.

+ References

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Amount of financing receivable past due.

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- Definition

Amount of unpaid principal balance of impaired financing receivables with related allowance for credit losses and without related allowance for credit losses.

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Amount, before allowance for credit loss, of financing receivable.

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