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Fair Values of Assets and Liabilities (Level 3 rollforwards-Assets) (Details 2) - Ameriprise Financial [Member] - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Corporate debt securities [Member] |  |  |  |  |  |  |
Summary of changes in Level 3 assets measured at fair value on a recurring basis [Rollforward] |  |  |  |  |  |  |
Balance, at the beginning of the period |  | $ 809 | $ 1,040 | $ 913 |  | $ 1,139 |
Total gains (losses) included in net income |  | (1) |  | (1) |  | (1) |
Total gains (losses) included in other comprehensive income (loss) |  | 4 | (2) | 32 |  | (28) |
Purchases |  | 21 |  | 35 |  | 15 |
Settlements |  | (39) | (46) | (185) |  | (133) |
Balance, at the end of the period |  | 794 | 992 | 794 |  | 992 |
Changes in unrealized gains (losses) relating to assets held at end of period |  |  |  | (1) |  | (1) |
Residential mortgage backed securities [Member] |  |  |  |  |  |  |
Summary of changes in Level 3 assets measured at fair value on a recurring basis [Rollforward] |  |  |  |  |  |  |
Balance, at the beginning of the period |  | 448 | 120 | 136 |  | 155 |
Total gains (losses) included in other comprehensive income (loss) |  |  |  |  |  | 1 |
Purchases |  | 60 | 20 | 477 |  | 20 |
Settlements |  | (6) | (5) | (12) |  | (24) |
Transfers out of Level 3 |  | (348) | (26) | (447) |  | (43) |
Balance, at the end of the period |  | 154 | 109 | 154 |  | 109 |
Commercial mortgage backed securities [Member] |  |  |  |  |  |  |
Summary of changes in Level 3 assets measured at fair value on a recurring basis [Rollforward] |  |  |  |  |  |  |
Balance, at the beginning of the period |  |  | 52 | 20 |  | 0 |
Purchases |  |  |  |  |  | 52 |
Transfers out of Level 3 |  |  | (52) | (20) |  | (52) |
Balance, at the end of the period |  | 0 | 0 | 0 |  | 0 |
Asset backed securities [Member] |  |  |  |  |  |  |
Summary of changes in Level 3 assets measured at fair value on a recurring basis [Rollforward] |  |  |  |  |  |  |
Balance, at the beginning of the period |  | 24 | 31 | 6 |  | 7 |
Total gains (losses) included in other comprehensive income (loss) |  |  | 1 |  |  | 1 |
Purchases |  |  |  | 18 |  | 32 |
Settlements |  |  | (1) |  |  | (1) |
Transfers into Level 3 |  | 14 |  | 14 |  | 2 |
Transfers out of Level 3 |  | (18) | (22) | (18) |  | (32) |
Balance, at the end of the period |  | 20 | 9 | 20 |  | 9 |
Available-for-sale securities [Member] |  |  |  |  |  |  |
Summary of changes in Level 3 assets measured at fair value on a recurring basis [Rollforward] |  |  |  |  |  |  |
Balance, at the beginning of the period |  | 1,281 | 1,243 | 1,075 |  | 1,301 |
Total gains (losses) included in net income | [1] | (1) |  | (1) |  | (1) |
Total gains (losses) included in other comprehensive income (loss) |  | 4 | (1) | 32 |  | (26) |
Purchases |  | 81 | 20 | 530 |  | 119 |
Settlements |  | (45) | (52) | (197) |  | (158) |
Transfers into Level 3 |  | 14 |  | 14 |  | 2 |
Transfers out of Level 3 |  | (366) | (100) | (485) |  | (127) |
Balance, at the end of the period |  | 968 | 1,110 | 968 |  | 1,110 |
Changes in unrealized gains (losses) relating to assets held at end of period |  | $ 0 | 0 | $ (1) | [1] | (1) | [1]
Other contracts [Member] |  |  |  |  |  |  |
Summary of changes in Level 3 assets measured at fair value on a recurring basis [Rollforward] |  |  |  |  |  |  |
Balance, at the beginning of the period |  |  | 2 |  |  | 0 |
Total gains (losses) included in net income | [2] |  | (2) |  |  | (3) |
Purchases |  |  |  |  |  | 3 |
Balance, at the end of the period |  |  | 0 |  |  | 0 |
Changes in unrealized gains (losses) relating to assets held at end of period | [2] |  | $ (2) |  |  | $ (3) |
[1] | Included in net investment income in the Consolidated Statements of Operations
[2] | Included in benefits, claims, losses and settlement expenses in the Consolidated Statements of Operations

X
- 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/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=117815213&loc=d3e19207-110258 + Details
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