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Fair Value of Financial Instruments - Changes in Unrealized Gains (Losses) Within Level 3 Financial Instruments Carried at Fair Value and Still Held (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]
Changes in unrealized gains (losses) included in net income	$ 722	$ 1,929	$ 3,077	$ 1,128
Trading securities
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]
Changes in unrealized gains (losses) included in net income	(1)	(5)	(1)	1
Equity securities
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]
Changes in unrealized gains (losses) included in net income	(1)	(13)	(3)	(29)
Mortgage loans on real estate
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]
Changes in unrealized gains (losses) included in net income	(2)	(5)	(3)	(3)
Derivative investments
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]
Changes in unrealized gains (losses) included in net income	(8)	0	8	(2)
MRBs
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]
Changes in unrealized gains (losses) included in net income	127	2,007	2,022	1,369
Reinsurance-related embedded derivatives
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]
Changes in unrealized gains (losses) included in net income	228	0	469	0
Indexed annuity ceded embedded derivatives
Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]
Changes in unrealized gains (losses) included in net income	$ 379	$ (55)	$ 585	$ (208)

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- Definition

Fair Value Assets And Liabilities Measured On Recurring Basis Level 3 Activity [Line Items]

+ References

No definition available.

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- Definition

Amount of unrealized gain (loss) recognized in income from liability measured at fair value on recurring basis using unobservable input (level 3) and still held.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (d)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482106/820-10-50-2

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