Investments - Summary of Fixed Maturity Securities by Rating and Concentrations of Risk (Details) - RiverSource Life $ in Millions	6 Months Ended	12 Months Ended
Jun. 30, 2022 USD ($) issuer	Dec. 31, 2021 USD ($) issuer
Investments
Fixed maturity securities rated internally	$ 291	$ 359
Amortized Cost	15,747	14,718
Fair Value	15,104	16,239
Fixed maturities
Investments
Amortized Cost		14,718
AAA
Investments
Amortized Cost	5,813	5,031
Fair Value	5,448	5,107
AA
Investments
Amortized Cost	750	757
Fair Value	827	932
A
Investments
Amortized Cost	1,541	1,662
Fair Value	1,617	2,013
BBB
Investments
Amortized Cost	6,975	6,293
Fair Value	6,598	7,063
Below investment grade
Investments
Amortized Cost	668	975
Fair Value	614	1,124
Below investment grade \| CLOs
Investments
Amortized Cost	1	1
Fair Value	$ 2	$ 2
Investment concentration risk \| Credit concentration risk \| Fixed maturities
Investments
Percentage of total	84.00%	85.00%
Fixed maturity securities \| Credit concentration risk
Investments
Percentage of total	100.00%	100.00%
Fixed maturity securities \| Credit concentration risk \| AAA
Investments
Percentage of total	36.00%	31.00%
Fixed maturity securities \| Credit concentration risk \| AA
Investments
Percentage of total	5.00%	6.00%
Fixed maturity securities \| Credit concentration risk \| A
Investments
Percentage of total	11.00%	12.00%
Fixed maturity securities \| Credit concentration risk \| BBB
Investments
Percentage of total	44.00%	44.00%
Fixed maturity securities \| Credit concentration risk \| Below investment grade
Investments
Percentage of total	4.00%	7.00%
Fixed maturity securities \| Credit concentration risk \| GNMA, FNMA and FHLMC mortgage backed securities \| AAA
Investments
Percentage of total	37.00%	40.00%
Shareholders' equity \| Investment concentration risk
Investments
Number of issuers greater than 10% of equity \| issuer	26	5
Issuers greater than 10% of equity	$ 3,700	$ 1,200
Shareholders' equity \| Investment concentration risk \| Maximum
Investments
Percentage of total	22.00%	16.00%
Shareholders' equity \| Investment concentration risk \| Minimum
Investments
Percentage of total	10.00%	10.00%

Fair Value, Concentration of Risk, Number Of Issuers

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- Definition

The amount of fixed maturity investments with credit ratings developed internally based on criteria similar to those used by Standard and Poor's, Moody's or Fitch.

+ References

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Amortized cost excluding accrued interest, before allowance for credit loss, of 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
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- Definition

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

+ References

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-Publisher FASB
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- Definition

This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
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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.

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