Allowance for Expected Credit Losses (Details) - Changes in the Allowance for Expected Credit Losses on Contractholder Receivables - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021
Credit Loss [Abstract]
Contractholder receivables (net of the allowance for expected credit losses), balance, beginning of period	$ 3,890	$ 4,242
Contractholder receivables (net of the allowance for expected credit losses), balance, end of period	3,579	3,890
Contractholder receivables, allowance for expected credit losses [Roll Forward]
Contractholder receivables, allowance for expected credit losses, beginning balance	21	19
Current period change for expected credit losses	(3)	2
Write-offs of uncollectible contractholder receivables	1	0
Contractholder receivables, allowance for expected credit losses, ending balance	$ 17	$ 21