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Derivative Instruments (Cumulative Basis Adjustments For Fair Value Hedges) (Details) $ in Millions | Jun. 30, 2019 USD ($)
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Fixed Maturity AFS Securities [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Amortized cost of hedged assets | $ 772 |
Cumulative amount of fair value hedging adjustment included in the amortized cost of the hedged assets | 196 |
Long-term Debt [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Amortized cost of hedged liabilities | (1,024) | [1]
Cumulative amount of fair value hedging adjustment included in the amortized cost of the hedged liabilities | (149) | [1]
Discontinued Hedges [Member] |  |
Derivatives, Fair Value [Line Items] |  |
Cumulative amount of fair value hedging adjustment included in the amortized cost of the hedged assets | $ (120) |
[1] | The balance includes $(120) million of unamortized adjustments from discontinued hedges as of June 30, 2019.

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- Definition Amount of cumulative increase (decrease) in fair value of hedged asset in fair value hedge, attributable to hedged risk. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4EE -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109999712-113959 + Details
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- Definition Amount of cumulative increase (decrease) in fair value of hedged liability in fair value hedge, attributable to hedged risk. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4EE -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109999712-113959 + Details
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