XML 110 R95.htm IDEA: XBRL DOCUMENT v3.22.0.1
Fair Value Disclosures (Fair Value for Assets and Liabilities Measured at Fair Value on a Recurring Basis) (Details) - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Special Purpose Acquisition Company Mergers    
Financial Liabilities    
Acquired common stock in a merger $ 133.7  
Common stocks | Level 3    
Financial Assets    
Financial assets 133.7  
Recurring    
Financial Assets    
Financial assets 9,198.2 $ 9,170.5
Financial Liabilities    
Other liabilities 76.4 76.1
Liabilities related to separate accounts 11.8 11.4
Total financial liabilities 88.2 87.5
Recurring | Level 1    
Financial Assets    
Financial assets 1,519.9 1,874.3
Financial Liabilities    
Other liabilities 72.4 72.9
Liabilities related to separate accounts 7.7 6.7
Total financial liabilities 80.1 79.6
Recurring | Level 2    
Financial Assets    
Financial assets 7,536.2 7,268.8
Financial Liabilities    
Other liabilities 0.0 0.5
Liabilities related to separate accounts 4.1 4.7
Total financial liabilities 4.1 5.2
Recurring | Level 3    
Financial Assets    
Financial assets 142.1 27.4
Financial Liabilities    
Other liabilities 4.0 2.7
Liabilities related to separate accounts 0.0 0.0
Total financial liabilities 4.0 2.7
Recurring | U.S. government and government agencies and authorities    
Financial Assets    
Financial assets 85.0 94.1
Recurring | U.S. government and government agencies and authorities | Level 1    
Financial Assets    
Financial assets 0.0 0.0
Recurring | U.S. government and government agencies and authorities | Level 2    
Financial Assets    
Financial assets 85.0 94.1
Recurring | U.S. government and government agencies and authorities | Level 3    
Financial Assets    
Financial assets 0.0 0.0
Recurring | States, municipalities and political subdivisions    
Financial Assets    
Financial assets 148.5 175.3
Recurring | States, municipalities and political subdivisions | Level 1    
Financial Assets    
Financial assets 0.0 0.0
Recurring | States, municipalities and political subdivisions | Level 2    
Financial Assets    
Financial assets 148.5 175.3
Recurring | States, municipalities and political subdivisions | Level 3    
Financial Assets    
Financial assets 0.0 0.0
Recurring | Foreign governments    
Financial Assets    
Financial assets 437.7 469.7
Recurring | Foreign governments | Level 1    
Financial Assets    
Financial assets 0.0 0.5
Recurring | Foreign governments | Level 2    
Financial Assets    
Financial assets 437.7 468.8
Recurring | Foreign governments | Level 3    
Financial Assets    
Financial assets 0.0 0.4
Recurring | Asset-backed    
Financial Assets    
Financial assets 423.0 260.5
Recurring | Asset-backed | Level 1    
Financial Assets    
Financial assets 0.0 0.0
Recurring | Asset-backed | Level 2    
Financial Assets    
Financial assets 423.0 260.5
Recurring | Asset-backed | Level 3    
Financial Assets    
Financial assets 0.0 0.0
Recurring | Commercial mortgage-backed    
Financial Assets    
Financial assets 473.7 281.4
Recurring | Commercial mortgage-backed | Level 1    
Financial Assets    
Financial assets 0.0 0.0
Recurring | Commercial mortgage-backed | Level 2    
Financial Assets    
Financial assets 473.7 272.7
Recurring | Commercial mortgage-backed | Level 3    
Financial Assets    
Financial assets 0.0 8.7
Recurring | Residential mortgage-backed    
Financial Assets    
Financial assets 601.9 734.6
Recurring | Residential mortgage-backed | Level 1    
Financial Assets    
Financial assets 0.0 0.0
Recurring | Residential mortgage-backed | Level 2    
Financial Assets    
Financial assets 601.9 734.6
Recurring | Residential mortgage-backed | Level 3    
Financial Assets    
Financial assets 0.0 0.0
Recurring | U.S. corporate    
Financial Assets    
Financial assets 3,803.1 3,690.6
Recurring | U.S. corporate | Level 1    
Financial Assets    
Financial assets 0.0 0.0
Recurring | U.S. corporate | Level 2    
Financial Assets    
Financial assets 3,799.7 3,678.6
Recurring | U.S. corporate | Level 3    
Financial Assets    
Financial assets 3.4 12.0
Recurring | Foreign corporate    
Financial Assets    
Financial assets 1,242.4 1,109.3
Recurring | Foreign corporate | Level 1    
Financial Assets    
Financial assets 0.0 0.0
Recurring | Foreign corporate | Level 2    
Financial Assets    
Financial assets 1,238.8 1,105.4
Recurring | Foreign corporate | Level 3    
Financial Assets    
Financial assets 3.6 3.9
Recurring | Mutual funds    
Financial Assets    
Financial assets 33.3 42.3
Recurring | Mutual funds | Level 1    
Financial Assets    
Financial assets 33.3 42.3
Recurring | Mutual funds | Level 2    
Financial Assets    
Financial assets 0.0 0.0
Recurring | Mutual funds | Level 3    
Financial Assets    
Financial assets 0.0 0.0
Recurring | Common stocks    
Financial Assets    
Financial assets 151.1 15.2
Recurring | Common stocks | Level 1    
Financial Assets    
Financial assets 15.5 13.3
Recurring | Common stocks | Level 2    
Financial Assets    
Financial assets 0.7 0.7
Recurring | Common stocks | Level 3    
Financial Assets    
Financial assets 134.9 1.2
Recurring | Non-redeemable preferred stocks    
Financial Assets    
Financial assets 261.3 232.7
Recurring | Non-redeemable preferred stocks | Level 1    
Financial Assets    
Financial assets 0.0 0.0
Recurring | Non-redeemable preferred stocks | Level 2    
Financial Assets    
Financial assets 261.3 231.6
Recurring | Non-redeemable preferred stocks | Level 3    
Financial Assets    
Financial assets 0.0 1.1
Recurring | Short-term investments    
Financial Assets    
Financial assets 207.2 253.5
Recurring | Short-term investments | Level 1    
Financial Assets    
Financial assets 200.1 202.0
Recurring | Short-term investments | Level 2    
Financial Assets    
Financial assets 7.1 51.5
Recurring | Short-term investments | Level 3    
Financial Assets    
Financial assets 0.0 0.0
Recurring | Other investments    
Financial Assets    
Financial assets 72.6 241.3
Recurring | Other investments | Level 1    
Financial Assets    
Financial assets 72.4 72.9
Recurring | Other investments | Level 2    
Financial Assets    
Financial assets 0.0 168.3
Recurring | Other investments | Level 3    
Financial Assets    
Financial assets 0.2 0.1
Recurring | Cash equivalents    
Financial Assets    
Financial assets 1,243.9 1,558.6
Recurring | Cash equivalents | Level 1    
Financial Assets    
Financial assets 1,190.9 1,536.6
Recurring | Cash equivalents | Level 2    
Financial Assets    
Financial assets 53.0 22.0
Recurring | Cash equivalents | Level 3    
Financial Assets    
Financial assets 0.0 0.0
Recurring | Other assets    
Financial Assets    
Financial assets 1.7  
Recurring | Other assets | Level 1    
Financial Assets    
Financial assets 0.0  
Recurring | Other assets | Level 2    
Financial Assets    
Financial assets 1.7  
Recurring | Other assets | Level 3    
Financial Assets    
Financial assets 0.0  
Recurring | Assets held in separate accounts    
Financial Assets    
Financial assets 11.8 11.4
Recurring | Assets held in separate accounts | Level 1    
Financial Assets    
Financial assets 7.7 6.7
Recurring | Assets held in separate accounts | Level 2    
Financial Assets    
Financial assets 4.1 4.7
Recurring | Assets held in separate accounts | Level 3    
Financial Assets    
Financial assets $ 0.0 $ 0.0