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Fair Value Measurements (Tables) | 6 Months Ended
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Jun. 30, 2022
Fair Value Disclosures [Abstract] |
Assets And Liabilities Measured At Fair value, On A Recurring Basis | The following tables present the assets and liabilities measured at fair value on a recurring basis as of June 30, 2022 and December 31, 2021 by level:
(In thousands) | Total |  | Level 1 |  | Level 2 |  | Level 3
June 30, 2022 |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |
Fixed maturity securities available for sale: |  |  |  |  |  |  |
U.S. government and government agency | $ | 720,914 |  |  | $ | — |  |  | $ | 720,914 |  |  | $ | — |
State and municipal | 3,017,263 |  |  | — |  |  | 3,017,263 |  |  | — |
Mortgage-backed | 1,477,099 |  |  | — |  |  | 1,477,099 |  |  | — |
Asset-backed | 4,292,488 |  |  | — |  |  | 4,292,488 |  |  | — |
Corporate | 5,689,125 |  |  | — |  |  | 5,689,125 |  |  | — |
Foreign government | 1,604,111 |  |  | — |  |  | 1,604,111 |  |  | — |
Total fixed maturity securities available for sale | 16,801,000 |  |  | — |  |  | 16,801,000 |  |  | — |
Equity securities: |  |  |  |  |  |  |
Common stocks | 932,672 |  |  | 926,865 |  |  | 1,256 |  |  | 4,551 |
Preferred stocks | 222,654 |  |  | — |  |  | 211,358 |  |  | 11,296 |
Total equity securities | 1,155,326 |  |  | 926,865 |  |  | 212,614 |  |  | 15,847 |
Arbitrage trading account | 1,142,003 |  |  | 1,121,579 |  |  | 20,424 |  |  | — |
Total | $ | 19,098,329 |  |  | $ | 2,048,444 |  |  | $ | 17,034,038 |  |  | $ | 15,847 |
Liabilities: |  |  |  |  |  |  |
Trading account securities sold but not yet purchased | $ | 68 |  |  | $ | 68 |  |  | $ | — |  |  | $ | — |
December 31, 2021 |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |
Fixed maturity securities available for sale: |  |  |  |  |  |  |
U.S. government and government agency | $ | 855,343 |  |  | $ | — |  |  | $ | 855,343 |  |  | $ | — |
State and municipal | 3,304,133 |  |  | — |  |  | 3,304,133 |  |  | — |
Mortgage-backed | 1,068,075 |  |  | — |  |  | 1,068,075 |  |  | — |
Asset-backed | 4,490,565 |  |  | — |  |  | 4,490,565 |  |  | — |
Corporate | 5,595,675 |  |  | — |  |  | 5,595,675 |  |  | — |
Foreign government | 1,214,901 |  |  | — |  |  | 1,214,901 |  |  | — |
Total fixed maturity securities available for sale | 16,528,692 |  |  | — |  |  | 16,528,692 |  |  | — |
Equity securities: |  |  |  |  |  |  |
Common stocks | 695,403 |  |  | 684,470 |  |  | 1,639 |  |  | 9,294 |
Preferred stocks | 245,840 |  |  | — |  |  | 234,544 |  |  | 11,296 |
Total equity securities | 941,243 |  |  | 684,470 |  |  | 236,183 |  |  | 20,590 |
Arbitrage trading account | 1,179,606 |  |  | 1,153,079 |  |  | 26,527 |  |  | — |
Total | $ | 18,649,541 |  |  | $ | 1,837,549 |  |  | $ | 16,791,402 |  |  | $ | 20,590 |
Liabilities: |  |  |  |  |  |  |
Trading account securities sold but not yet purchased | $ | 1,169 |  |  | $ | 1,137 |  |  | $ | 32 |  |  | $ | — |
Summarize Changes In Level 3 Assets | The following tables summarize changes in Level 3 assets and liabilities for the six months ended June 30, 2022 and for the year ended December 31, 2021:
Gains (Losses) Included In:
(In thousands) | Beginning Balance |  | Earnings (Losses) |  | Other Comprehensive Income (Losses) |  | Impairments |  | Purchases |  | Sales |  | Paydowns / Maturities |  | Transfers In / (Out) |  | Ending Balance
Six Months Ended June 30, 2022 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stocks | $ | 9,294 |  |  | $ | (4,743) |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | 4,551 |
Preferred stocks | 11,296 |  |  | — |  |  | — |  |  | — |  |  | 925 |  |  | (925) |  |  | — |  |  | — |  |  | 11,296 |
Total | $ | 20,590 |  |  | $ | (4,743) |  |  | $ | — |  |  | $ | — |  |  | $ | 925 |  |  | $ | (925) |  |  | $ | — |  |  | $ | — |  |  | $ | 15,847 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trading account securities sold but not yet purchased | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Year Ended December 31, 2021 |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Assets: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed maturities securities available for sale: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Corporate | $ | 1,000 |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | (1,000) |  |  | $ | — |  |  | $ | — |  |  | $ | — |
Total | 1,000 |  |  | — |  |  | — |  |  | — |  |  | — |  |  | (1,000) |  |  | — |  |  | — |  |  | — |
Equity securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Common stocks | 9,215 |  |  | 640 |  |  | — |  |  | — |  |  | — |  |  | (561) |  |  | — |  |  | — |  |  | 9,294 |
Preferred stocks | 9,331 |  |  | (35) |  |  | — |  |  | — |  |  | 2,000 |  |  | — |  |  | — |  |  | — |  |  | 11,296 |
Total | 18,546 |  |  | 605 |  |  | — |  |  | — |  |  | 2,000 |  |  | (561) |  |  | — |  |  | — |  |  | 20,590 |
Arbitrage trading account | — |  |  | 8 |  |  | — |  |  | — |  |  | — |  |  | (8) |  |  | — |  |  | — |  |  | — |
Total | $ | 19,546 |  |  | $ | 613 |  |  | $ | — |  |  | $ | — |  |  | $ | 2,000 |  |  | $ | (1,569) |  |  | $ | — |  |  | $ | — |  |  | $ | 20,590 |
Liabilities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Trading account securities sold but not yet purchased | $ | — |  |  | $ | 1 |  |  | $ | — |  |  | $ | — |  |  | $ | (1) |  |  | $ | — |  |  | $ | — |  |  | $ | — |  |  | $ | — |

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- Definition Tabular disclosure of financial instruments measured at fair value, including those classified in shareholders' equity measured on a recurring or nonrecurring basis. Disclosures include, but are not limited to, fair value measurements recorded and the reasons for the measurements, level within the fair value hierarchy in which the fair value measurements are categorized and transfers between levels 1 and 2. Nonrecurring fair value measurements are those that are required or permitted in the statement of financial position in particular circumstances. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 Reference 2: 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 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2C -URI http://asc.fasb.org/extlink&oid=123874694&loc=SL7498348-110258 Reference 4: 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 Reference 5: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bb) -URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258 + Details
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