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Dividends From Subsidiaries And Statutory Financial Information (Schedule of Combined Net Income and Policyholders' Surplus in Accordance with Statutory Accounting Practices) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Insurance [Abstract] |  |  |
Amount available for dividend distribution without prior approval from regulatory authorities | $ 1,200,000 |  |
Net income | 1,176,255 | $ 1,358,813 | $ 1,040,342
Policyholders' surplus | 8,776,138 | $ 8,330,587 | $ 6,817,535
Increase in BIC's statutory capital and surplus | $ 159,000 |  |
Total Adjusted Capital percentage threshold | 200.00% |  |
BIC's Total Adjusted Capital balance | $ 8,600,000 |  |
BIC's Total Adjusted Capital balance as percentage of RBC Authorized Control Level | 391.00% |  |

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- Definition Amount of dividends that can be declared or paid without approval of regulatory agency. + References No definition available. + Details
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- Definition The amount of statutory capital and surplus (stockholders' equity) as of the balance sheet date using prescribed or permitted statutory accounting practices (rather than GAAP, if different) of the state or country. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(23)(c)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 944 -SubTopic 505 -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479989/944-505-50-1 + Details
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- Definition Amount of net income for the period determined using accounting principles prescribed or permitted by insurance regulators. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(23)(c)) -Publisher FASB -URI https://asc.fasb.org//1943274/2147479440/944-210-S99-1 + Details
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- Definition The Company’s statutory capital and surplus excluding capital and surplus derived from the use of permitted practices that differ from statutory accounting practices + References No definition available. + Details
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- Definition Statutory Accounting Practices, Statutory Capital and Surplus, Adjusted Capital Balance, Percent + References No definition available. + Details
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- Definition Statutory Accounting Practices, Statutory Capital and Surplus, Adjusted Capital Balance, Remedial Threshold + References No definition available. + Details
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- Definition Statutory Accounting Practices, Statutory Capital and Surplus, Total Increase (Decrease) Effect on Balance + References No definition available. + Details
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