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Derivatives - Narrative (Details) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2020 USD ($) swap | Mar. 31, 2019 USD ($) | Dec. 31, 2019 USD ($)
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Carrying value of collateral received to support purchased call options | $ 76,000,000 |  | $ 577,000,000
Cash Flow Hedges | Designated as Hedging Instrument | Interest rate swaps |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Number of interest rate swaps designated and qualifying as a cash flow hedges | swap | 12 |  |
Derivative, notional amount | $ 1,860,000,000 |  | 1,980,000,000
Gain (loss) reclassified from AOCI into net investment income | 12,000,000 | $ (2,000,000) |
Collateral payable related to interest rate swaps | 19,000,000 |  |
Collateral receivable related to interest rate swaps |  |  | 20,000,000
Other assets | Cash Flow Hedges | Designated as Hedging Instrument | Interest rate swaps |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net derivatives, at fair value | 125,000,000 |  | 50,000,000
Other liabilities | Cash Flow Hedges | Designated as Hedging Instrument | Interest rate swaps |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net derivatives, at fair value |  |  | $ (5,000,000)
Contract termination | Cash Flow Hedges | Interest rate swaps |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Derivative, notional amount | $ 83,000,000 |  |
Number of interest rate derivatives terminated | swap | 1 |  |
Maximum | Other liabilities | Cash Flow Hedges | Designated as Hedging Instrument | Interest rate swaps |  |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |  |
Net derivatives, at fair value | $ (1,000,000) |  |

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- Definition Amount of right to receive cash collateral under master netting arrangements that have not been offset against derivative liabilities. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 13 -URI http://asc.fasb.org/extlink&oid=99393222&loc=SL20226016-175313 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109980867&loc=d3e41678-113959 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (d)(2) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 + Details
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