XML 70 R53.htm IDEA: XBRL DOCUMENT v3.20.4
Commitments and Contingencies (Tables)
12 Months Ended
Dec. 31, 2020
Commitments and Contingencies Disclosure [Abstract]  
Broker concentration risk The following table summarizes the percentage of the Company’s gross premiums written generated from or placed by the largest brokers:
Broker

Year Ended December 31,

202020192018
Marsh & McLennan Companies and its subsidiaries13.3 %9.6 %9.3 %
Aon Corporation and its subsidiaries12.0 %12.2 %11.4 %