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Fair Value (Tables)

12 Months Ended

Dec. 31, 2021

Fair Value [Abstract]

Fair Value Measurement Levels For All Assets And Liabilities

					Fair Value Measurement Using:
					Quoted Prices
					in Active			Significant
					Markets for			Other			Significant
					Identical			Observable			Unobservable
					Assets			Inputs			Inputs
(Dollars in thousands)		December 31, 2021			(Level 1)			(Level 2)			(Level 3)
Assets:
Fixed maturities, market value
U.S. Treasury securities and obligations of
U.S. government agencies and corporations		$	1,420,618		$	-		$	1,420,618		$	-
Obligations of U.S. States and political subdivisions			586,621			-			586,621			-
Corporate securities			7,556,898			-			6,756,324			800,574
Asset-backed securities			3,581,729			-			2,330,448			1,251,281
Mortgage-backed securities
Commercial			1,064,366			-			1,064,366			-
Agency residential			2,375,332			-			2,375,332			-
Non-agency residential			6,536			-			6,536			-
Foreign government securities			1,437,512			-			1,437,512			-
Foreign corporate securities			4,278,660			-			4,262,645			16,015
Total fixed maturities, market value			22,308,272			-			20,240,402			2,067,870
Equity securities, fair value			1,825,908			1,742,367			83,541			-

					Fair Value Measurement Using:
					Quoted Prices
					in Active			Significant
					Markets for			Other			Significant
					Identical			Observable			Unobservable
					Assets			Inputs			Inputs
(Dollars in thousands)		December 31, 2020			(Level 1)			(Level 2)			(Level 3)
Assets:
Fixed maturities, market value
U.S. Treasury securities and obligations of
U.S. government agencies and corporations		$	1,367,106		$	-		$	1,367,106		$	-
Obligations of U.S. States and political subdivisions			577,295			-			577,295			-
Corporate securities			7,149,026			-			6,447,534			701,492
Asset-backed securities			2,565,802			-			1,942,769			623,033
Mortgage-backed securities
Commercial			990,303			-			990,303			-
Agency residential			2,267,739			-			2,267,739			-
Non-agency residential			5,194			-			5,194			-
Foreign government securities			1,645,375			-			1,645,375			-
Foreign corporate securities			3,472,333			-			3,466,634			5,699
Total fixed maturities, market value			20,040,173			-			18,709,949			1,330,224
Equity securities, fair value			1,472,236			1,368,704			103,532			-

Activity Under Level 3, Fair Value Measurements Using Significant Unobservable Inputs By Asset Type

			Total Fixed Maturities, Market Value
		December 31, 2021												December 31, 2020
		Corporate			Asset-Backed			Foreign						Corporate			Asset-Backed			Foreign
(Dollars in thousands)		Securities			Securities			Corporate			Total			Securities			Securities			Corporate			Total
Beginning balance fixed maturities at market value		$	701,492		$	623,033		$	5,699		$	1,330,224		$	617,588		$	153,641		$	1,750		$	772,979
Total gains or (losses) (realized/unrealized)
Included in earnings			(11,717)			(6,469)			399			(17,787)			1,216			681			(125)			1,772
Included in other comprehensive income (loss)			4,008			(6,603)			184			(2,411)			(1,115)			11,678			147			10,710
Purchases, issuances and settlements			106,791			641,320			9,733			757,844			84,840			457,033			3,814			545,687
Transfers in and/or (out) of Level 3			-			-			-			-			(1,037)			-			113			(924)
Ending balance		$	800,574		$	1,251,281		$	16,015		$	2,067,870		$	701,492		$	623,033		$	5,699		$	1,330,224
The amount of total gains or losses for the period
included in earnings (or changes in net assets)
attributable to the change in unrealized gains
or losses relating to assets still held
at the reporting date		$	(16,467)		$	(7,679)		$	-		$	(24,146)		$	(539)		$	-		$	-		$	(539)
(Some amounts may not reconcile due to rounding.)

	Total Fixed Maturities, Fair Value
	December 31, 2021						December 31, 2020
		Foreign						Foreign
(Dollars in thousands)			Corporate		Total			Corporate			Total
Beginning balance fixed maturities at market value		$	-		$	-		$	5,826		$	5,826
Total gains or (losses) (realized/unrealized)
Included in earnings			-			-			(919)			(919)
Included in other comprehensive income (loss)			-			-			-			-
Purchases, issuances and settlements			-			-			(4,907)			(4,907)
Transfers in and/or (out) of Level 3			-			-			-			-
Ending balance		$	-		$	-		$	-		$	-
The amount of total gains or losses for the period
included in earnings (or changes in net assets)
attributable to the change in unrealized gains
or losses relating to assets still held
at the reporting date		$	-		$	-		$	-		$	-
(Some amounts may not reconcile due to rounding.)

X

- Definition

Tabular disclosure of the fair value measurement of assets using significant unobservable inputs (Level 3), a reconciliation of the beginning and ending balances, separately presenting changes during the period attributable to the following: (1) total gains or losses for the period (realized and unrealized), segregating those gains or losses included in earnings (or changes in net assets) and gains or losses recognized in other comprehensive income (loss), and a description of where those gains or losses included in earnings (or changes in net assets) are reported in the statement of income (or activities); (2) purchases, sales, issues, and settlements (each type disclosed separately); and (3) transfers in and transfers out of Level 3 (for example, transfers due to changes in the observability of significant inputs), by class of asset.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19279-110258

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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X

- Definition

Tabular disclosure of the fair value of financial instruments, including financial assets and financial liabilities, and the measurements of those instruments, assets, and liabilities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 11
-URI http://asc.fasb.org/extlink&oid=123594938&loc=d3e13467-108611

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

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