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Derivatives (Credit Risk on Freestanding Derivatives) (Details) - USD ($) $ in Millions | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Credit Derivatives [Line Items] |  |
Collateral Amount Not Provided Due to Downgrade Threshold | $ 15 |
Estimated fair value of derivatives in a net liability position (1) | 2,447 | $ 2,049
Derivative assets | 8,737 | 11,411
Derivative liabilities | 6,298 | 6,975
Fixed maturity securities AFS |  |
Credit Derivatives [Line Items] |  |
Estimated fair value of collateral provided: | 3,017 | 2,267
Accrued Liabilities [Member] |  |
Credit Derivatives [Line Items] |  |
Derivative assets | 181 | 166
Derivative liabilities | 9 | 0
Derivatives Subject to Credit-Contingent Provisions |  |
Credit Derivatives [Line Items] |  |
Estimated fair value of derivatives in a net liability position (1) | 2,443 | 2,049
Derivatives Subject to Credit-Contingent Provisions | Fixed maturity securities AFS |  |
Credit Derivatives [Line Items] |  |
Estimated fair value of collateral provided: | 3,011 | 2,267
Derivatives Not Subject to Credit-Contingent Provisions |  |
Credit Derivatives [Line Items] |  |
Estimated fair value of derivatives in a net liability position (1) | 4 | 0
Derivatives Not Subject to Credit-Contingent Provisions | Fixed maturity securities AFS |  |
Credit Derivatives [Line Items] |  |
Estimated fair value of collateral provided: | $ 6 | $ 0

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- Definition 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. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (d) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4H + Details
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- Definition Fair value, before effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets elected not to be offset. Excludes assets not subject to a master netting arrangement. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483444/210-20-55-22 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147483466/210-20-50-3 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 20 -Name Accounting Standards Codification -Section 55 -Paragraph 7 -Publisher FASB -URI https://asc.fasb.org//1943274/2147483444/210-20-55-7 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4B -Subparagraph (a),(c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4B Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 4D -Subparagraph (c)(2) -SubTopic 20 -Topic 860 -Publisher FASB -URI https://asc.fasb.org//1943274/2147481326/860-20-50-4D + Details
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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 -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4H -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480434/815-10-50-4H + Details
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