Investments (Components of Net Investment Gains Losses - Transaction Type) (Details) - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Gain (Loss) on Securities [Line Items]
Realized gains (losses) on investments sold or disposed	$ (436)	$ (1,028)	$ (880)
Investments Impairment	101	1,498	40
Change in ACL recognized in earnings	(248)	(271)	(134)
Unrealized net gains (losses) recognized in earnings	(62)	54	(100)
Total recognized gains (losses)	(310)	(217)	(234)
Non-investment portfolio gains (losses)	(337)	(81)	(106)
Net investment gains (losses)	(1,184)	(2,824)	(1,260)
Fixed maturity securities AFS (1)	(731)	$ (2,471)	$ (1,912)
Reinsurance Risk Transfer Transaction
Gain (Loss) on Securities [Line Items]
Realized gains (losses) on investments sold or disposed	1,200
Investments Impairment	1,300
Other Asset Impairment Charges	(56)
Fixed maturity securities AFS (1)	95
Private Equity Funds
Gain (Loss) on Securities [Line Items]
Realized gains (losses) on investments sold or disposed	46
Equity Method Investment, Amount Sold	798
Proceeds from Sale of Equity Method Investments	752
Commercial Mortgage Loans \| Reinsurance Risk Transfer Transaction
Gain (Loss) on Securities [Line Items]
Gain (Loss) on Sale of Mortgage Loans	$ (2)

Change in allowance for credit loss recognized in earnings

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Investments Impairment

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Amount of the entity's equity method investment which has been sold.

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Amount of realized and unrealized gain (loss) on investment.

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The gains (losses) included in earnings that represent the difference between the sale price and the carrying value of loans made to finance real estate acquisitions. This element refers to the gain (loss) and not to the cash proceeds of the sale. This element is a noncash adjustment to net income when calculating net cash generated by operating activities using the indirect method.

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The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

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The cash inflow associated with the sale of equity method investments, which are investments in joint ventures and entities in which the entity has an equity ownership interest normally of 20 to 50 percent and exercises significant influence.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of unrealized gain (loss) on investment.

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