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Schedule of Pre-Tax Gain (Loss) Recognized in Net Income (Loss) for Effects of Derivatives not Designated as Hedges (Detail) - Derivatives not designated as hedges - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Derivative [Line Items]
Pre-tax gain (loss) recognized in net income	$ (24)	$ (69)	$ (91)	$ (67)
Equity index options | Net investment gains (losses)
Derivative [Line Items]
Pre-tax gain (loss) recognized in net income	1	5	6	6
Financial futures | Changes in fair value of market risk benefits and associated hedges
Derivative [Line Items]
Pre-tax gain (loss) recognized in net income	(15)	(65)	(79)	(67)
Fixed indexed annuity embedded derivatives | Net investment gains (losses)
Derivative [Line Items]
Pre-tax gain (loss) recognized in net income	(5)	(8)	(13)	(10)
Indexed universal life embedded derivatives | Net investment gains (losses)
Derivative [Line Items]
Pre-tax gain (loss) recognized in net income	2	2	6	7
Forward bond purchase commitments | Net investment gains (losses)
Derivative [Line Items]
Pre-tax gain (loss) recognized in net income	$ (7)	$ (3)	$ (11)	$ (3)

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- Definition

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.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 815
-SubTopic 40
-Name Accounting Standards Codification
-Section 50
-Paragraph 5
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-Publisher FASB
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