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Dividends From Subsidiaries And Statutory Financial Information (Tables)
12 Months Ended
Dec. 31, 2021
Insurance [Abstract]  
Schedule of Combined Net Income and Policyholders' Surplus in Accordance with Statutory Accounting Practices
BIC’s combined net income and statutory capital and surplus, as determined in accordance with statutory accounting practices ("SAP"), are as follows:
(In thousands)202120202019
Net income$1,040,342 $771,990 $601,564 
Statutory capital and surplus$6,817,535 $6,188,121 $6,013,062