Period of time between issuance and maturity of debt instrument, in PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration

- Definition

Amount of the collateral pledged in support of federal home loan bank advances outstanding.

+ References

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-Topic 942
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-Name Accounting Standards Codification
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

- Definition

Reflects the total carrying amount as of the balance sheet date of debt having initial terms less than one year or the normal operating cycle, if longer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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-Topic 852
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+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- 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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- Details

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- Details

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- Details

Name:	us-gaap_FinancialInstrumentAxis=us-gaap_CommercialMortgageBackedSecuritiesMember
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- Details

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Debt - Short-term Borrowings Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2022	Dec. 31, 2023
Federal Home Loan Bank borrowings \| Ameriprise Bank
Short-term borrowings
Short-term borrowings	$ 0		$ 0
Federal Home Loan Bank borrowings \| Maximum \| RiverSource Life Insurance Company
Short-term borrowings
Term, less than	3 months	3 months
Federal Home Loan Bank borrowings \| Commercial mortgage backed securities \| RiverSource Life Insurance Company
Short-term borrowings
FHLB advances, securities pledged as collateral	$ 964		1,100
Federal Reserve Bank Advances \| Ameriprise Bank
Short-term borrowings
Short-term borrowings	$ 0		$ 0