Premiums Receivable (Tables)

12 Months Ended

Dec. 31, 2022

Premium Receivable, Allowance for Credit Loss [Table Text Block]


Premiums Receivable and Agents' Balances
	As of December 31,
	2022		2021
Premiums receivable, excluding receivables for losses within a deductible and retrospectively-rated policy premiums ("loss sensitive business")	$	4,698	$	4,130
Receivables for loss sensitive business, by credit quality:

AA	106		130
A	38		52
BBB	119		133
BB	56		64
Below BB	41		41
Total receivables for loss sensitive business	360		420

Total Premiums Receivable and Agents' Balances, Gross	5,058		4,550
ACL	(109)		(105)
Total Premiums Receivable and Agents' Balances, Net of ACL	$	4,949	$	4,445


Rollforward of ACL on Premiums Receivable and Agents' Balances for the Year Ended
	December 31, 2022						December 31, 2021						December 31, 2020
	Premiums Receivable and Agents' Balances, Excluding Receivables for Loss Sensitive Business		Receivables for Loss Sensitive Business		Total		Premiums Receivable and Agents' Balances, Excluding Receivables for Loss Sensitive Business		Receivables for Loss Sensitive Business		Total		Premiums Receivable and Agents' Balances, Excluding Receivables for Loss Sensitive Business		Receivables for Loss Sensitive Business		Total
Beginning ACL	$	83	$	22	$	105	$	117	$	35	$	152	$	85	$	60	$	145
Cumulative effect of accounting change [1]													(2)		(21)		(23)
Adjusted beginning ACL	83		22		105		117		35		152		83		39		122
Current period provision (release)	48		3		51		17		(13)		4		78		(4)		74
Current period gross write-offs	(56)		(1)		(57)		(59)		—		(59)		(49)		—		(49)
Current period gross recoveries	10		—		10		8		—		8		5		—		5
Ending ACL	$	85	$	24	$	109	$	83	$	22	$	105	$	117	$	35	$	152

[1]Represents the adjustment to the ACL recorded on adoption of accounting guidance for credit losses on January 1, 2020. The adjusted beginning ACL was based on the Company's historical loss information adjusted for current conditions and the forecasted economic environment at the time the guidance was adopted. For further information refer to Note 1 - Basis of Presentation and Significant Accounting Policies.