Reinsurance (Tables)

9 Months Ended

Sep. 30, 2021

Reinsurance Recoverable, Credit Quality Indicator [Table Text Block]


Reinsurance Recoverables by Credit Quality Indicator
	As of September 30, 2021								As of December 31, 2020
	Property and Casualty		Group Benefits		Corporate		Total		Property and Casualty		Group Benefits		Corporate		Total
A.M. Best Financial Strength Rating
A++	$	1,728	$	—	$	—	$	1,728	$	1,598	$	—	$	—	$	1,598
A+	1,876		236		279		2,391		1,788		230		305		2,323
A	696		—		—		696		638		—		—		638
A-	29		9		—		38		37		9		—		46
B++	644		—		3		647		666		—		3		669
Below B++	21		1		—		22		21		1		—		22
Total Rated by A.M. Best	4,994		246		282		5,522		4,748		240		308		5,296
Mandatory (Assigned) and Voluntary Risk Pools	251		—		—		251		259		—		—		259
Captives	311		—		—		311		305		—		—		305
Other not rated companies	255		7		—		262		254		5		—		259
Gross Reinsurance Recoverables	5,811		253		282		6,346		5,566		245		308		6,119
Allowance for uncollectible reinsurance	(96)		(1)		(2)		(99)		(105)		(1)		(2)		(108)
Net Reinsurance Recoverables	$	5,715	$	252	$	280	$	6,247	$	5,461	$	244	$	306	$	6,011

Reinsurance Recoverable, Allowance for Credit Loss [Table Text Block]


Allowance for Uncollectible Reinsurance for the Three Months Ended
	September 30, 2021								September 30, 2020
	Property and Casualty		Group Benefits		Corporate		Total		Property and Casualty		Group Benefits		Corporate		Total
Beginning allowance for uncollectible reinsurance	$	96	$	1	$	2	$	99	$	108	$	1	$	2	$	111
Beginning allowance for disputed amounts	56		—		—		56		57		—		—		$	57
Beginning ACL	40		1		2		43		51		1		2		54


Current period provision (release)	1		—		—		1		1		—		—		1



Ending ACL	41		1		2		44		52		1		2		55
Ending allowance for disputed amounts	55		—		—		55		54		—		—		54
Ending allowance for uncollectible reinsurance	$	96	$	1	$	2	$	99	$	106	$	1	$	2	$	109


Allowance for Uncollectible Reinsurance for the Nine Months Ended
	September 30, 2021								September 30, 2020
	Property and Casualty		Group Benefits		Corporate		Total		Property and Casualty		Group Benefits		Corporate		Total
Beginning allowance for uncollectible reinsurance	$	105	$	1	$	2	$	108	$	114	$	—	$	—	$	114
Beginning allowance for disputed amounts	53		—		—		53		66		—		—		$	66
Beginning ACL	52		1		2		55		48		—		—		48
Cumulative effect of accounting change [1]									—		1		1		2
Adjusted beginning ACL	52		1		2		55		48		1		1		50
Current period provision (release)	(11)		—		—		(11)		3		—		1		4


Current period gross recoveries	—		—		—		—		1		—		—		1
Ending ACL	41		1		2		44		52		1		2		55
Ending allowance for disputed amounts	55		—		—		55		54		—		—		54
Ending allowance for uncollectible reinsurance	$	96	$	1	$	2	$	99	$	106	$	1	$	2	$	109

[1] Represents the adjustment to the ACL recorded on adoption of accounting guidance for credit losses on January 1, 2020. For further information, see Note 1 - Basis of Presentation and Significant Accounting Policies of Notes to Consolidated Financial Statements included in the Company's 2020 Form 10-K Annual Report.