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Fair Value of Financial Instruments (Tables) | 3 Months Ended
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Mar. 31, 2023
Fair Value Disclosures [Abstract] |
Carrying Amounts And Estimated Fair Values Of Financial Instruments | The following table presents the carrying amounts and estimated fair values of the Company’s financial instruments:
| March 31, 2023 |  | December 31, 2022
(In thousands) | Carrying Value |  | Fair Value |  | Carrying Value |  | Fair Value
Assets: |  |  |  |  |  |  |
Fixed maturity securities | $ | 18,091,113 |  |  | $ | 18,095,068 |  |  | $ | 17,587,349 |  |  | $ | 17,591,626 |
Equity securities | 1,279,955 |  |  | 1,279,955 |  |  | 1,185,894 |  |  | 1,185,894 |
Arbitrage trading account | 609,001 |  |  | 609,001 |  |  | 944,230 |  |  | 944,230 |
Loans receivable | 194,944 |  |  | 187,455 |  |  | 193,002 |  |  | 187,981 |
Cash and cash equivalents | 1,242,357 |  |  | 1,242,357 |  |  | 1,449,346 |  |  | 1,449,346 |
Trading account receivables from brokers and clearing organizations | 583,970 |  |  | 583,970 |  |  | 233,863 |  |  | 233,863 |
Due from broker | 17,207 |  |  | 17,207 |  |  | 3,609 |  |  | 3,609 |
Liabilities: |  |  |  |  |  |  |
Senior notes and other debt | 1,827,981 |  |  | 1,501,671 |  |  | 1,828,823 |  |  | 1,439,188 |
Subordinated debentures | 1,008,551 |  |  | 836,796 |  |  | 1,008,371 |  |  | 805,600 |

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- 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 + Details
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