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Investments (Net Inv Inc summary) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Jun. 30, 2020
Investments, Debt and Equity Securities [Abstract] |  |  |  |  |  |  |
Investment income on fixed maturities | $ 275 |  | $ 349 | $ 887 |  | $ 1,046 |
Net realized gains (losses) | 4 | [1] | (10) | (18) | [1] | (6) |
Affordable housing partnerships | (14) |  | (26) | (50) |  | (58) |
Other | 13 |  | 19 | 58 |  | 67 |
Consolidated investment entities | 22 |  | 24 | 56 |  | 72 |
Net investment income | 300 |  | $ 356 | 933 |  | $ 1,121 |
Allowance for Credit Loss | $ 30 |  |  | $ 30 |  |  | $ 2
[1] | Includes the change in the allowance for credit losses of $(2) million and $(30) million for the three months and nine months ended September 30, 2020, respectively.Available-for-Sale securities distributed by type were as follows:

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- Definition Interest income on fixed maturity securities classified as Available-for-Sale, commercial mortgage loans, policy loans, consumer loans, other investments and cash and cash equivalents; the changes in fair value of trading securities, including seed money, certain derivatives, and assets and liabilities of consolidated investment entities; the pro rata share of net income or loss on equity method investments; and realized gains and losses on the sale of securities and charges for investments determined to be other-than-temporarily impaired. + References No definition available. + Details
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- Definition Amount 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 (a) -URI http://asc.fasb.org/extlink&oid=121582814&loc=SL82922900-210455 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 326 -SubTopic 30 -Section 50 -Paragraph 9 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=121582814&loc=SL82922900-210455 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (aaa) -URI http://asc.fasb.org/extlink&oid=121645371&loc=d3e27161-111563 Reference 4: 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=121558606&loc=SL82898722-210454 + Details
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