Alternative investments as a percentage of overall invested assets.

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- Definition

Amortized cost of portfolio rated below investment grade.

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No definition available.

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- Definition

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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- Definition

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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- Definition

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

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No definition available.

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- Definition

Fair value of portfolio rated below investment grade.

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No definition available.

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- Definition

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.

+ References

No definition available.

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- Definition

This item represents investment commitments as of the balance sheet date for limited partnerships.

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No definition available.

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- Definition

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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- Definition

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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- Definition

Number of partnerships represented in alternative investment portfolio.

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No definition available.

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Fair value of investment subject to concentration of credit or market risk or both.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

Fair value of collateral permitted, by contact or custom, to be sold or re-pledged.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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- Definition

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

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Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef
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Investments - Narrative (Details) $ in Millions	12 Months Ended
Investments - Narrative (Details) $ in Millions	Dec. 31, 2024 USD ($) security	Dec. 31, 2023 USD ($) security	Dec. 31, 2022 USD ($)
Investments [Line Items]
Increase (decrease) in gross AFS securities unrealized losses	$ 820
Losses from loan modifications	3	$ 1
Trading securities change in gross gain (loss)	$ (1)	$ 80	$ (628)
Number of partnerships in alternative investment portfolio \| security	351	332
Alternative investments as a percentage of overall invested assets	3.00%	3.00%
Investment commitments	$ 4,300
Investment commitments for limited partnerships	3,200
Investment commitments for mortgage loans on real estate	828
Investment commitments for private placements	227
Derivative Counterparties
Investments [Line Items]
Fair value of collateral received that we are permitted to sell or re-pledge	2,600
Fair value of securities received as collateral that have been resold or repledged	$ 63
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%
California \| Mortgage loans on real estate \| Geographic Concentration Risk \| Commercial
Investments [Line Items]
Concentration risk	27.00%	27.00%
California \| Mortgage loans on real estate \| Geographic Concentration Risk \| Residential
Investments [Line Items]
Concentration risk	14.00%	14.00%
Texas \| Mortgage loans on real estate \| Geographic Concentration Risk \| Commercial
Investments [Line Items]
Concentration risk	10.00%	9.00%
New York \| Mortgage loans on real estate \| Geographic Concentration Risk \| Residential
Investments [Line Items]
Concentration risk	14.00%	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	$ 2,700
Fair value of portfolio rated below investment grade	2,700	2,600
White Chapel V LLC \| MBS
Investments [Line Items]
Fair value, concentration of risk	$ 1,500
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	$ 1,100	$ 1,300
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		$ 1,000
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	$ 16,200	$ 16,600
Financial Service \| Investments \| Lender Concentration Risk \| Securities Investment
Investments [Line Items]
Concentration risk	13.00%	14.00%
Consumer Non-Cyclical Industry \| Securities Investment
Investments [Line Items]
Fair value, concentration of risk	$ 10,700	$ 11,300
Consumer Non-Cyclical Industry \| Investments \| Lender Concentration Risk \| Securities Investment
Investments [Line Items]
Concentration risk	9.00%	10.00%