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DAC, VOBA, DSI, and DFEL (DSI) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Changes in DSI [Roll Forward] |  |  |
Balance as of beginning-of-year | $ 248 | $ 238 | $ 243
Business acquired (sold) through reinsurance |  | (21) |
Deferrals | 26 | 47 | 29
Amortization, net of interest: |  |  |
Amortization, excluding unlocking, net of interest | (29) | (28) | (30)
Unlocking | (3) |  | (4)
Adjustment related to realized (gains) losses | 2 | (1) | (1)
Adjustment related to unrealized (gains) losses | (10) | 13 | 1
Balance as of end-of-year | $ 234 | $ 248 | $ 238

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- References No definition available. + Details
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- Definition Amount of amortization of deferred sales inducement costs attributable to realized investment gains (losses). + References No definition available. + Details
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- Definition Amount of amortization of deferred sales inducement costs attributable to unrealized investment gains (losses). + References No definition available. + Details
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- Definition The amount of adjustment to amortization of deferred sales inducement costs arising from a revision in estimated gross profit (when such amount serves as the basis for allocating amortization of DSI to reporting periods). + References No definition available. + Details
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- Definition Amount of deferred sale inducement cost capitalized. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 30 -Section 50 -Paragraph 2B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=117419109&loc=SL117422543-158416 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 30 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=117419109&loc=d3e11332-158416 Reference 3: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 40 -Section 65 -Paragraph 2 -Subparagraph (g)(1) -URI http://asc.fasb.org/extlink&oid=117419843&loc=SL117420844-207641 + Details
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- Definition A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period. + References No definition available. + Details
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