Derivatives (Credit Risk on Freestanding Derivatives) (Details) - USD ($) $ in Millions	Jun. 30, 2021	Dec. 31, 2020
Credit Derivatives [Line Items]
Estimated fair value of derivatives in a net liability position (1)	$ 1,502	$ 1,185
Derivative, Collateral, Right to Reclaim Cash	229	238
Fixed maturity securities AFS
Credit Derivatives [Line Items]
Estimated fair value of collateral provided:	1,604	1,224
Derivatives Subject to Credit- Contingent Provisions
Credit Derivatives [Line Items]
Estimated fair value of derivatives in a net liability position (1)	1,479	1,182
Derivatives Subject to Credit- Contingent Provisions \| Fixed maturity securities AFS
Credit Derivatives [Line Items]
Estimated fair value of collateral provided:	1,584	1,222
Derivatives Not Subject to Credit- Contingent Provisions
Credit Derivatives [Line Items]
Estimated fair value of derivatives in a net liability position (1)	23	3
Derivatives Not Subject to Credit- Contingent Provisions \| Fixed maturity securities AFS
Credit Derivatives [Line Items]
Estimated fair value of collateral provided:	$ 20	$ 2

The aggregate fair value of assets that are already posted, at the end of the reporting period, as collateral for derivative instruments with credit-risk-related contingent features.

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-Publisher FASB
-Name Accounting Standards Codification
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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
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- Definition

The aggregate fair value amounts of derivative instruments that contain credit-risk-related contingent features that are in a net liability position at the end of the reporting period. For nonderivative instruments that are designated and qualify as hedging instruments, the fair value amounts are the carrying value of the nonderivative hedging instrument, including the adjustment for the foreign currency transaction gain (loss) on that instrument.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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-Topic 815
-SubTopic 10
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