Schedule VI. Supplemental Information Concerning Property and Casualty Insurance Operations

12 Months Ended

Dec. 31, 2023

SEC Schedule, 12-18, Supplemental Information, Property-Casualty Insurance Underwriters [Abstract]

Schedule VI. Supplemental Information Concerning Property and Casualty Insurance Operations

SCHEDULE VI. SUPPLEMENTAL INFORMATION CONCERNING PROPERTY AND CASUALTY INSURANCE OPERATIONS

As of and for the years ended December 31	Consolidated Property and Casualty Operations
(In millions)	2023		2022 (1)		2021 (1)
Balance Sheet Data
Deferred acquisition costs	$	896	$	806
Reserves for unpaid claim and claim adjustment expenses	23,304		22,120
Discount deducted from claim and claim adjustment expense reserves above (based on interest rates ranging from 3.5% to 6.4%)	647		683
Unearned premiums	6,933		6,374
Statement of Operations Data
Net written premiums	$	9,892	$	9,128	$	8,405
Net earned premiums	9,480		8,667		8,175
Net investment income	2,163		1,751		2,111
Incurred claim and claim adjustment expenses related to current year	5,667		5,181		5,021
Incurred claim and claim adjustment expenses related to prior years	48		(32)		15
Amortization of deferred acquisition costs	1,644		1,490		1,443
Paid claim and claim adjustment expenses	4,601		4,302		3,949

(1) As of January 1, 2023, the Company adopted ASU 2018-12 using the modified retrospective method applied as of the transition date of January 1, 2021. Prior period amounts in the financial statements have been adjusted to reflect application of the new guidance. See Note A to the Consolidated Financial Statements for additional information.