Investments - Rollforward of Allowance for Credit Losses (Details) - Ameriprise Financial - USD ($) $ in Millions	3 Months Ended	6 Months Ended
Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Rollforward of available-for-Sale securities allowance for credit losses
Beginning Balance	$ 1	$ 0	$ 1	$ 11
Charge-offs	0	0	0	(11)
Ending Balance	1	0	1	0
Corporate debt securities
Rollforward of available-for-Sale securities allowance for credit losses
Beginning Balance	0	0	0	10
Charge-offs	0	0	0	(10)
Ending Balance	0	0	0	0
Asset backed securities
Rollforward of available-for-Sale securities allowance for credit losses
Beginning Balance	0	0	0	1
Charge-offs	0	0	0	(1)
Ending Balance	0	0	0	0
State and municipal obligations
Rollforward of available-for-Sale securities allowance for credit losses
Beginning Balance	1	0	1	0
Charge-offs	0	0	0	0
Ending Balance	$ 1	$ 0	$ 1	$ 0

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

No definition available.

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- Definition

Amount excluding accrued interest, of allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 45
-Paragraph 1
-URI https://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454

+ Details

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- Definition

Amount, excluding accrued interest, of decrease in allowance for credit loss on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) from writeoff.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 30
-Section 50
-Paragraph 9
-Subparagraph (g)
-URI https://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455

+ Details

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