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SCHEDULE I SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES (Details) $ in Millions | Dec. 31, 2019 USD ($)
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Summary of investments other than investments in related parties |
Cost | $ 2,599.8
Carrying Value | 2,947.2
Fair Value | 2,947.2
Fixed maturity investments |
Summary of investments other than investments in related parties |
Cost | 1,177.9
Carrying Value | 1,205.8
Fair Value | 1,205.8
U.S. Government and agency obligations |
Summary of investments other than investments in related parties |
Cost | 231.7
Carrying Value | 232.5
Fair Value | 232.5
Debt securities issued by corporations |
Summary of investments other than investments in related parties |
Cost | 454.9
Carrying Value | 467.2
Fair Value | 467.2
Municipal obligations |
Summary of investments other than investments in related parties |
Cost | 284.7
Carrying Value | 297.1
Fair Value | 297.1
Mortgage and asset-backed securities |
Summary of investments other than investments in related parties |
Cost | 206.6
Carrying Value | 209.0
Fair Value | 209.0
Short-term investments |
Summary of investments other than investments in related parties |
Cost | 201.2
Carrying Value | 201.2
Fair Value | 201.2
Exchange traded funds |
Summary of investments other than investments in related parties |
Cost | 436.0
Carrying Value | 536.4
Fair Value | 536.4
Common equity securities |
Summary of investments other than investments in related parties |
Cost | 553.3
Carrying Value | 683.9
Fair Value | 683.9
Other |
Summary of investments other than investments in related parties |
Cost | 117.3
Carrying Value | 147.5
Fair Value | 147.5
Other long-term investments |
Summary of investments other than investments in related parties |
Cost | 667.4
Carrying Value | 856.3
Fair Value | $ 856.3

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