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CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($)
$ in Millions
Sep. 30, 2021
Dec. 31, 2020
Common shares, par value per share (in dollars per share) $ 1 $ 1
Common shares, authorized shares (in shares) 50,000,000 50,000,000
Common shares, issued shares (in shares) 3,029,620 3,102,011
Common shares, outstanding shares (in shares) 3,029,620 3,102,011
Specialty Insurance Distribution (NSM)    
Restricted cash $ 92.2 $ 78.4
Kudu    
Restricted cash $ 4.5 $ 0.0