Allowance for Expected Credit Losses (Tables)

12 Months Ended

Dec. 31, 2022

Credit Loss [Abstract]

Changes in the allowance for expected credit losses on premiums receivable [Table Text Block]

The following table presents the balances of premiums receivable, net of the allowance for expected credit losses, at December 31, 2022 and 2021, and the changes in the allowance for expected credit losses for the twelve months ended December 31, 2022 and 2021.

	At and For the Twelve Months Ended December 31, 2022				At and For the Twelve Months Ended December 31, 2021
(in millions)	Premiums Receivable, Net of Allowance for Expected Credit Losses		Allowance for Expected Credit Losses		Premiums Receivable, Net of Allowance for Expected Credit Losses		Allowance for Expected Credit Losses
Balance, beginning of period	$	8,085	$	107	$	7,829	$	105
Current period change for expected credit losses			54				65
Write-offs of uncollectible premiums receivable			84				63
Balance, end of period	$	8,922	$	77	$	8,085	$	107

Changes in the allowance for estimated uncollectible reinsurance [Table Text Block]

The following table presents the balances of reinsurance recoverables, net of the allowance for estimated uncollectible reinsurance, at December 31, 2022 and 2021, and the changes in the allowance for estimated uncollectible reinsurance for the twelve months ended December 31, 2022 and 2021.

	At and For the Twelve Months Ended December 31, 2022				At and For the Twelve Months Ended December 31, 2021
(in millions)	Reinsurance Recoverables, Net of Allowance for Estimated Uncollectible Reinsurance		Allowance for Estimated Uncollectible Reinsurance		Reinsurance Recoverables, Net of Allowance for Estimated Uncollectible Reinsurance		Allowance for Estimated Uncollectible Reinsurance
Balance, beginning of period	$	8,452	$	141	$	8,350	$	146
Current period change for estimated uncollectible reinsurance			(9)				(5)
Write-offs of uncollectible reinsurance recoverables			—				—
Balance, end of period	$	8,063	$	132	$	8,452	$	141

Changes in the allowance for expected credit losses on contractholder receivables [Table Text Block]

The following table presents the balances of contractholder receivables, net of the allowance for expected credit losses, at December 31, 2022 and 2021, and the changes in the allowance for expected credit losses for the twelve months ended December 31, 2022 and 2021.

	At and For the Twelve Months Ended December 31, 2022				At and For the Twelve Months Ended December 31, 2021
(in millions)	Contractholder Receivables, Net of Allowance for Expected Credit Losses		Allowance for Expected Credit Losses		Contractholder Receivables, Net of Allowance for Expected Credit Losses		Allowance for Expected Credit Losses
Balance, beginning of period	$	3,890	$	21	$	4,242	$	19
Current period change for expected credit losses			(3)				2
Write-offs of uncollectible contractholder receivables			1				—
Balance, end of period	$	3,579	$	17	$	3,890	$	21