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Level 4- Fair Value Option (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Dec. 31, 2017
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Changes in fair value of assets using fair value option | $ 0 | $ (1) |
Fixed maturities, at fair value using the fair value option | 38 |  | $ 41
Assets, Fair Value Disclosure | 39,482 |  | 40,297
Corporate |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Changes in fair value of assets using fair value option | 0 | $ (1) |
RMBS |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Fixed maturities, at fair value using the fair value option | 38 |  | 41
Total fixed maturities |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |
Assets, Fair Value Disclosure | $ 38 |  | $ 41

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- Definition Fair Value, Option, Fixed Maturity Securities + References No definition available. + Details
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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition For each line item in the statement of financial position, the amounts of gains and losses from fair value changes included in earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 30 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=75031198&loc=d3e14172-108612 + Details
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