XML 61 R36.htm IDEA: XBRL DOCUMENT v3.25.0.1

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2024

Fair Value Disclosures [Abstract]

Balances Of Assets Measured At Fair Value On A Recurring Basis

The following tables present the balances of assets measured at fair value on a recurring basis by level within the fair value hierarchy.

			December 31, 2024
(dollars in thousands)			Level 1						Level 2						Level 3						Total
Assets:
Investments:
Fixed maturity securities, available-for-sale:
U.S. Treasury securities			$	—					$	5,087,858					$	—					$	5,087,858
U.S. government-sponsored enterprises			—						1,346,236						—						1,346,236
Obligations of states, municipalities and political subdivisions			—						3,619,492						—						3,619,492
Foreign governments, agencies, and supranationals			—						2,706,523						—						2,706,523
Agency mortgage-backed securities			—						2,649,813						—						2,649,813
Non-agency mortgage-backed securities			—						118,030						—						118,030
Corporate and university bonds			—						217,587						—						217,587
Total fixed maturity securities, available-for-sale			—						15,745,539						—						15,745,539
Equity securities:
Insurance, banks and other financial institutions			4,968,736						—						1,384						4,970,120
Industrial, consumer and all other			6,814,401						—						—						6,814,401
Total equity securities			11,783,137						—						1,384						11,784,521
Short-term investments, available-for-sale			2,363,736						161,174						—						2,524,910
Total investments			$	14,146,873					$	15,906,713					$	1,384					$	30,054,970

			December 31, 2023
(dollars in thousands)			Level 1						Level 2						Level 3						Total
Assets:
Investments:
Fixed maturity securities, available-for-sale:
U.S. Treasury securities			$	—					$	3,784,713					$	—					$	3,784,713
U.S. government-sponsored enterprises			—						1,142,814						—						1,142,814
Obligations of states, municipalities and political subdivisions			—						4,029,305						—						4,029,305
Foreign governments, agencies, and supranationals			—						2,447,218						—						2,447,218
Agency mortgage-backed securities			—						2,381,010						—						2,381,010
Non-agency mortgage-backed securities			—						333,070						—						333,070
Corporate and university bonds			—						254,602						—						254,602
Total fixed maturity securities, available-for-sale			—						14,372,732						—						14,372,732
Equity securities:
Insurance, banks and other financial institutions			3,694,375						—						994						3,695,369
Industrial, consumer and all other			5,882,502						—						—						5,882,502
Total equity securities			9,576,877						—						994						9,577,871
Short-term investments, available-for-sale			2,402,099						169,283						—						2,571,382
Total investments			$	11,978,976					$	14,542,015					$	994					$	26,521,985

X

- References

No definition available.

+ Details

Name:	us-gaap_FairValueDisclosuresAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Tabular disclosure of assets and liabilities, including [financial] instruments measured at fair value that are classified in stockholders' equity, if any, that are measured at fair value on a recurring basis. The disclosures contemplated herein include the fair value measurements at the reporting date by the level within the fair value hierarchy in which the fair value measurements in their entirety fall, segregating fair value measurements using quoted prices in active markets for identical assets (Level 1), significant other observable inputs (Level 2), and significant unobservable inputs (Level 3).

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

+ Details

Name:	us-gaap_ScheduleOfFairValueAssetsAndLiabilitiesMeasuredOnRecurringBasisTableTextBlock
Namespace Prefix:	us-gaap_
Data Type:	dtr-types:textBlockItemType
Balance Type:	na
Period Type:	duration