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Investments - Change in unrealized net capital gains and losses (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Change in Unrealized Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss) |  |  |
Change in unrealized net capital gains and losses | $ 2,152 | $ 2,711 | $ (1,434)
Amounts recognized for: |  |  |
Insurance reserves | (370) | (126) | 315
DAC and DSI | (140) | (191) | 163
Amounts recognized | (510) | (317) | 478
Deferred income taxes | (349) | (505) | 202
Increase (decrease) in unrealized net capital gains and losses, after-tax | 1,293 | 1,889 | (754)
EMA limited partnerships |  |  |
Change in Unrealized Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss) |  |  |
Change in unrealized net capital gains and losses | 0 | (4) | (1)
Fixed income securities |  |  |
Change in Unrealized Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss) |  |  |
Change in unrealized net capital gains and losses | 2,152 | 2,715 | (1,431)
Short-term investments |  |  |
Change in Unrealized Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss) |  |  |
Change in unrealized net capital gains and losses | 0 | 0 | 0
Derivatives |  |  |
Change in Unrealized Gain (Loss) Recognized in Accumulated Other Comprehensive Income (Loss) |  |  |
Change in unrealized net capital gains and losses | $ 0 | $ 0 | $ (2)

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- Definition Represents change in accumulated adjustments to Deferred Policy Acquisition Costs, Deferred Sales Inducement Costs, and insurance reserves related to unrealized capital gains and losses during the period. + References No definition available. + Details
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- Definition Amount, before tax and after adjustment, of unrealized gain (loss) on investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale) and unrealized gain (loss) on investment in debt security measured at amortized cost (held-to-maturity) from transfer to available-for-sale. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (f) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 10A -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=121641772&loc=SL7669646-108580 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=121641772&loc=d3e637-108580 + Details
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