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Fair Values of Assets and Liabilities - Changes in Level 3 Assets (Details) - Ameriprise Financial - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Available-for-Sale securities |  |  |  |
Summary of changes in Level 3 assets measured at fair value on a recurring basis |  |  |  |
Balance, beginning | $ 811 | $ 625 | $ 747 | $ 470
Total gains (losses) included in Net income | 1 | 1 | 2 | 1
Total gains (losses) included in Other comprehensive income (loss) | 4 | 17 | 18 | 14
Purchases | 32 | 72 | 188 | 282
Settlements | (26) | (28) | (95) | (55)
Transfers out of Level 3 | (23) | (81) | (61) | (106)
Balance, ending | 799 | 606 | 799 | 606
Changes in unrealized gains (losses) included in net income relating to assets held at end of period | 1 |  | 2 | 1
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period | 4 | 16 | 18 | 13
Corporate debt securities |  |  |  |
Summary of changes in Level 3 assets measured at fair value on a recurring basis |  |  |  |
Balance, beginning | 708 | 544 | 583 | 469
Total gains (losses) included in Net income | 1 | 1 | 2 | 1
Total gains (losses) included in Other comprehensive income (loss) | 4 | 16 | 18 | 14
Purchases | 32 | 44 | 163 | 146
Settlements | (14) | (28) | (35) | (53)
Transfers out of Level 3 | 0 | 0 | 0 | 0
Balance, ending | 731 | 577 | 731 | 577
Changes in unrealized gains (losses) included in net income relating to assets held at end of period | 1 |  | 2 | 1
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period | 4 | 16 | 18 | 13
Residential mortgage backed securities |  |  |  |
Summary of changes in Level 3 assets measured at fair value on a recurring basis |  |  |  |
Balance, beginning | 23 | 57 | 38 | 0
Total gains (losses) included in Net income | 0 | 0 | 0 | 0
Total gains (losses) included in Other comprehensive income (loss) | 0 | 1 | 0 | 0
Purchases | 0 | 27 | 25 | 112
Settlements | 0 | 0 | (2) | (2)
Transfers out of Level 3 | (23) | (57) | (61) | (82)
Balance, ending | 0 | 28 | 0 | 28
Changes in unrealized gains (losses) included in net income relating to assets held at end of period | 0 |  | 0 | 0
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period | 0 | 0 | 0 | 0
Asset backed securities |  |  |  |
Summary of changes in Level 3 assets measured at fair value on a recurring basis |  |  |  |
Balance, beginning | 80 | 24 | 126 | 1
Total gains (losses) included in Net income | 0 | 0 | 0 | 0
Total gains (losses) included in Other comprehensive income (loss) | 0 | 0 | 0 | 0
Purchases | 0 | 1 | 0 | 24
Settlements | (12) | 0 | (58) | 0
Transfers out of Level 3 | 0 | (24) | 0 | (24)
Balance, ending | 68 | 1 | 68 | 1
Changes in unrealized gains (losses) included in net income relating to assets held at end of period | 0 |  | 0 | 0
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period | 0 | 0 | 0 | 0
Fixed deferred indexed annuities ceded embedded derivatives |  |  |  |
Summary of changes in Level 3 assets measured at fair value on a recurring basis |  |  |  |
Balance, beginning | 57 | 55 | 55 | 51
Total gains (losses) included in Net income | 3 | 1 | 8 | 7
Total gains (losses) included in Other comprehensive income (loss) | 0 | 0 | 0 | 0
Purchases | 0 | 0 | 0 | 0
Settlements | (1) | (1) | (4) | (3)
Transfers out of Level 3 | 0 | 0 | 0 | 0
Balance, ending | 59 | 55 | 59 | 55
Changes in unrealized gains (losses) included in net income relating to assets held at end of period | 0 |  | 0 | 0
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period | $ 0 | $ 0 | $ 0 | $ 0

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- Definition Amount of unrealized gain (loss) recognized in income from asset measured at fair value on recurring basis using unobservable input (level 3) and still held. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 101 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-101 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 102 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-102 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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- Definition Amount of gain (loss) recognized in other comprehensive income (OCI) from asset measured at fair value on recurring basis using unobservable input (level 3). + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 55 -Paragraph 101 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482078/820-10-55-101 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(1a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482106/820-10-50-2 + Details
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