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Contractholder Funds - Narrative (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2024	Dec. 31, 2023
Insurance [Abstract]
Change in total benefits and other changes in policy reserves increase (decrease)	$ (79)	$ 73

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- Definition

Policyholder Benefits And Claims Incurred, Net, Life and Annuity, Change In Policy Reserves, Increase (Decrease)

+ References

No definition available.

+ Details

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Balance Type:	credit
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- References

No definition available.

+ Details

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Period Type:	duration