v3.26.3
Note 3 - Revenues - Disaggregated Revenues (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2026
Sep. 30, 2025
Sep. 30, 2026
Sep. 30, 2025
Revenues $ 809.0 $ 768.3 $ 2,397.9 $ 2,293.9
UNITED STATES        
Revenues 658.3 631.9 1,948.0 1,880.9
UNITED KINGDOM        
Revenues 71.6 63.7 203.3 186.8
Other Countries [Member]        
Revenues 79.1 72.7 246.6 226.2
Insurance [Member] | Underwriting [Member]        
Revenues 568.0 542.1 1,689.2 1,623.7
Insurance [Member] | Claims [Member]        
Revenues $ 241.0 $ 226.2 $ 708.7 $ 670.2