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Variable Interest Entities (Narrative) (Detail) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 USD ($) | Dec. 31, 2017 USD ($)
Variable Interest Entity [Line Items] |  |
Carrying amounts of assets | $ 1,700 | $ 3,200
Carrying amounts of liabilities | $ 1,700 | $ 2,300
Variable Interest Entity Primary Beneficiary [Member] | Structured Finance And International Insurance [Member] |  |
Variable Interest Entity [Line Items] |  |
Number of variable interest entities consolidated | 0 |
Variable Interest Entity Primary Beneficiary [Member] | Structured Finance And International Insurance [Member] | Zohar Funds Bankruptcy Cases Debtors [Member] |  |
Variable Interest Entity [Line Items] |  |
Net realized gains (losses) related to deconsolidation | $ (93) |
Number of variable interest entities deconsolidated | 2 |
Variable Interest Entity Primary Beneficiary [Member] | Structured Finance And International Insurance [Member] | Non-Zohar [Member] |  |
Variable Interest Entity [Line Items] |  |
Number of variable interest entities deconsolidated | 8 |

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- Definition Represents the number of VIEs consolidated during the period. + References No definition available. + Details
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- Definition Represents the number of VIEs deconsolidated during the period. + References No definition available. + Details
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- Definition Amount of gain (loss) from deconsolidation of subsidiary and derecognition of group of assets constituting transfer of business or nonprofit activity, excluding conveyance of oil and gas mineral rights and transfer of good or service in contract with customer. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109239629&loc=SL4582445-111684 + Details
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- Definition The carrying amount of the consolidated Variable Interest Entity's assets included in the reporting entity's statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=108788376&loc=d3e5710-111685 + Details
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Period Type: | instant

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- Definition The carrying amount of the consolidated Variable Interest Entity's liabilities included in the reporting entity's statement of financial position. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 810 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=108788376&loc=d3e5710-111685 + Details
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Period Type: | instant

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- Details
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- Details
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