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Fair Values of Assets and Liabilities - Changes in Level 3 Assets (Details) - Ameriprise Financial - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Available-for-Sale securities |  |  |
Changes in Level 3 assets measured at fair value on a recurring basis |  |  |
Balance, beginning | $ 470 | $ 411 | $ 544
Total gains (losses) included in Net income | 1 | 0 | (1)
Total gains (losses) included in Other comprehensive income (loss) | 1 | 11 | (49)
Purchases | 526 | 126 | 572
Settlements | (118) | (78) | (91)
Transfers out of Level 3 | (133) |  | (564)
Balance, ending | 747 | 470 | 411
Changes in unrealized gains (losses) in net income relating to assets held at end of period | 1 |  | (1)
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period | (2) | 11 | (43)
Corporate debt securities |  |  |
Changes in Level 3 assets measured at fair value on a recurring basis |  |  |
Balance, beginning | 469 | 405 | 502
Total gains (losses) included in Net income | 1 | 0 | (1)
Total gains (losses) included in Other comprehensive income (loss) | 1 | 11 | (44)
Purchases | 228 | 126 | 39
Settlements | (116) | (73) | (91)
Transfers out of Level 3 | 0 |  | 0
Balance, ending | 583 | 469 | 405
Changes in unrealized gains (losses) in net income relating to assets held at end of period | 1 |  | (1)
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period | (2) | 11 | (42)
Residential mortgage backed securities |  |  |
Changes in Level 3 assets measured at fair value on a recurring basis |  |  |
Balance, beginning | 0 | 0 | 0
Total gains (losses) included in Net income | 0 |  | 0
Total gains (losses) included in Other comprehensive income (loss) | 0 |  | (4)
Purchases | 150 |  | 389
Settlements | (2) |  | 0
Transfers out of Level 3 | (110) |  | (385)
Balance, ending | 38 | 0 | 0
Changes in unrealized gains (losses) in net income relating to assets held at end of period | 0 |  | 0
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period | 0 |  | 0
Commercial mortgage backed securities |  |  |
Changes in Level 3 assets measured at fair value on a recurring basis |  |  |
Balance, beginning |  | 0 | 35
Total gains (losses) included in Net income |  |  | 0
Total gains (losses) included in Other comprehensive income (loss) |  |  | 0
Purchases |  |  | 112
Settlements |  |  | 0
Transfers out of Level 3 |  |  | (147)
Balance, ending |  |  | 0
Changes in unrealized gains (losses) in net income relating to assets held at end of period |  |  | 0
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period |  |  | 0
Asset backed securities |  |  |
Changes in Level 3 assets measured at fair value on a recurring basis |  |  |
Balance, beginning | 1 | 6 | 7
Total gains (losses) included in Net income | 0 | 0 | 0
Total gains (losses) included in Other comprehensive income (loss) | 0 | 0 | (1)
Purchases | 148 | 0 | 32
Settlements | 0 | (5) | 0
Transfers out of Level 3 | (23) |  | (32)
Balance, ending | 126 | 1 | 6
Changes in unrealized gains (losses) in net income relating to assets held at end of period | 0 |  | 0
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period | 0 | 0 | (1)
Fixed deferred indexed annuities ceded embedded derivatives |  |  |
Changes in Level 3 assets measured at fair value on a recurring basis |  |  |
Balance, beginning | 51 | 48 | 59
Total gains (losses) included in Net income | 8 | 6 | (8)
Total gains (losses) included in Other comprehensive income (loss) | 0 | 0 | 0
Purchases | 0 | 0 | 0
Settlements | (4) | (3) | (3)
Transfers out of Level 3 | 0 |  | 0
Balance, ending | 55 | 51 | 48
Changes in unrealized gains (losses) in net income relating to assets held at end of period | 0 |  | 0
Changes in unrealized gains (losses) in other comprehensive income (loss) relating to assets held at end of period | $ 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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