Alternative investments as a percentage of overall invested assets.

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Amortized cost of portfolio rated below investment grade.

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No definition available.

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This item represents the change in gross unrealized holding gain or loss on available-for-sale securities that has been included in accumulated other comprehensive income, a separate component of shareholders' equity, during the period.

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No definition available.

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Percentage of the fair value of portfolio that was rated investment grade as of balance sheet date.

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No definition available.

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This item represents the percentage of the fair value of securities obtained as collateral under reverse repurchase agreements

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Fair value of portfolio rated below investment grade.

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Financing Receivable, Number Of Loans In Foreclosure

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No definition available.

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Financing Receivable, Number Of Loans Past Due

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Impaired Financing Receivable, Number Of Impaired Loans

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No definition available.

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This item represents total investment commitments as of the balance sheet date for fixed maturity available-for-sale securities, limited partnerships, real estate and mortgage loans on real estate.

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No definition available.

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No definition available.

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This item represents investment commitments as of the balance sheet date for private placements.

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No definition available.

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This item represents investment commitments as of the balance sheet date for mortgage loans.

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No definition available.

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- Definition

Investments

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No definition available.

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Number of partnerships represented in alternative investment portfolio.

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No definition available.

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Trading Securities Change In Gross Gain (Loss)

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No definition available.

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- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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- Definition

Amount excluding accrued interest, of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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This item represents disclosure of all significant concentrations of credit risk or market risk arising from the subject financial instrument (as defined), whether from an individual counterparty or groups of counterparties.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Fair value of collateral permitted, by contact or custom, to be sold or re-pledged.

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Fair value of the collateral, or portion thereof, that has been re-pledged, delivered, or otherwise used.

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- Definition

Amortized cost of financing receivable modified during period for debtor experiencing financial difficulty.

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Unpaid principal balance of impaired financing receivables for which there is a related allowance for credit losses.

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- Definition

Recorded investment of consumer mortgage loan receivables secured by residential real estate properties for which formal foreclosure proceedings are in process.

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Investments - Narrative (Details) $ in Millions	12 Months Ended
Investments - Narrative (Details) $ in Millions	Dec. 31, 2023 USD ($) loan security	Dec. 31, 2022 USD ($) loan security	Dec. 31, 2021 USD ($)
Investments [Line Items]
Increase (decrease) in gross AFS securities unrealized losses	$ (5,500)
Trading securities change in gross gain (loss)	80	$ (628)	$ (48)
Losses from loan modifications (less than)	$ 1
Number of partnerships in alternative investment portfolio \| security	332	328
Alternative investments as a percentage of overall invested assets	3.00%	2.00%
Fair value of collateral received that we are permitted to sell or re-pledge	$ 25
Fixed maturity available-for-sale securities, at fair value	82,300	$ 99,465
Investment commitments	3,000
Investment commitments for limited partnerships	2,300
Investment commitments for mortgage loans on real estate	536
Investment commitments for private placements	197
Asset Pledged as Collateral
Investments [Line Items]
Fixed maturity available-for-sale securities, at fair value	42
Derivative Counterparties
Investments [Line Items]
Fair value of collateral received that we are permitted to sell or re-pledge	1,300
Fair value of securities received as collateral that have been resold or repledged	$ 553
Minimum
Investments [Line Items]
Percentage of the fair value of securities obtained as collateral under reverse repurchase agreements	80.00%
Maximum
Investments [Line Items]
Percentage of the fair value of securities obtained as collateral under reverse repurchase agreements	95.00%
Commercial
Investments [Line Items]
Number of impaired loans \| loan	3	2
Impaired financing receivable, principal balance	$ 2	$ 1
Residential
Investments [Line Items]
Number of loans past due \| loan	116	73
Number of loans in foreclosure \| loan	82	49
Mortgage loans in process of foreclosure	$ 38	$ 21
Number of impaired loans \| loan	99	37
Impaired financing receivable, principal balance	$ 47	$ 16
California \| Mortgage loans on real estate \| Geographic Concentration Risk \| Commercial
Investments [Line Items]
Concentration risk	27.00%	28.00%
California \| Mortgage loans on real estate \| Geographic Concentration Risk \| Residential
Investments [Line Items]
Concentration risk		17.00%
Texas \| Mortgage loans on real estate \| Geographic Concentration Risk \| Commercial
Investments [Line Items]
Concentration risk	9.00%	9.00%
New Jersey \| Mortgage loans on real estate \| Geographic Concentration Risk \| Residential
Investments [Line Items]
Concentration risk	14.00%	12.00%
NEW YORK \| Mortgage loans on real estate \| Geographic Concentration Risk \| Residential
Investments [Line Items]
Concentration risk	12.00%
Corporate bonds
Investments [Line Items]
Percentage of fair value rated as investment grade	96.00%	96.00%
Amortized cost of portfolio rated below investment grade	$ 2,700	$ 3,500
Fair value of portfolio rated below investment grade	2,600	3,300
White Chapel V LLC \| MBS
Investments [Line Items]
Fair value, concentration of risk	$ 1,300
White Chapel V LLC \| Investments \| Lender Concentration Risk \| MBS
Investments [Line Items]
Concentration risk	1.00%
White Chapel LLC \| MBS
Investments [Line Items]
Fair value, concentration of risk	$ 1,000	$ 1,000
White Chapel LLC \| Investments \| Lender Concentration Risk \| MBS
Investments [Line Items]
Concentration risk	1.00%	1.00%
Federal Home Loan Mortgage Corporation \| MBS
Investments [Line Items]
Fair value, concentration of risk		$ 702
Federal Home Loan Mortgage Corporation \| Investments \| Lender Concentration Risk \| MBS
Investments [Line Items]
Concentration risk		1.00%
Financial Service \| Securities Investment
Investments [Line Items]
Fair value, concentration of risk	$ 16,600	$ 19,200
Financial Service \| Investments \| Lender Concentration Risk \| Securities Investment
Investments [Line Items]
Concentration risk	14.00%	15.00%
Consumer Non-Cyclical Industry \| Securities Investment
Investments [Line Items]
Fair value, concentration of risk	$ 11,300	$ 14,300
Consumer Non-Cyclical Industry \| Investments \| Lender Concentration Risk \| Securities Investment
Investments [Line Items]
Concentration risk	10.00%	11.00%