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Investments - Rollforward of Allowance for Credit Losses (Details) - Ameriprise Financial - USD ($) $ in Millions | 3 Months Ended
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Mar. 31, 2022 | Mar. 31, 2021
Rollforward of available-for-Sale securities allowance for credit losses |  |
Beginning Balance | $ 1 | $ 11
Charge-offs | 0 | (11)
Ending Balance | 1 | 0
Corporate debt securities |  |
Rollforward of available-for-Sale securities allowance for credit losses |  |
Beginning Balance | 0 | 10
Charge-offs | 0 | (10)
Ending Balance | 0 | 0
Asset backed securities |  |
Rollforward of available-for-Sale securities allowance for credit losses |  |
Beginning Balance | 0 | 1
Charge-offs | 0 | (1)
Ending Balance | 0 | 0
State and municipal obligations |  |
Rollforward of available-for-Sale securities allowance for credit losses |  |
Beginning Balance | 1 | 0
Charge-offs | 0 | 0
Ending Balance | $ 1 | $ 0

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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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- Definition Amount of writeoff 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 50 -Paragraph 9 -Subparagraph (g) -URI http://asc.fasb.org/extlink&oid=124269663&loc=SL82922900-210455 + Details
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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 http://asc.fasb.org/extlink&oid=124258926&loc=SL82898722-210454 + Details
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