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SCHEDULE I SUMMARY OF INVESTMENTS-OTHER THAN INVESTMENTS IN RELATED PARTIES (Details) (USD $) In Millions, unless otherwise specified | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
--- | --- | --- | ---
Summary of investments other than investments in related parties |  |  |  |
Cost | $ 7,102.0 | [1] |  |
Carrying Value | 7,428.9 | [1] |  |
Fair Value | 7,428.9 | [1] |  |
Fixed maturity investments |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Cost | 5,265.9 | [1] |  |
Carrying Value | 5,266.8 | [1] |  |
Fair Value | 5,266.8 | [1] |  |
US Government and agency obligations |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Cost | 365.5 |  |  |
Carrying Value | 362.5 |  |  |
Fair Value | 362.5 |  |  |
Debt securities issued by corporations |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Cost | 2,330.7 |  |  |
Carrying Value | 2,347.2 |  |  |
Fair Value | 2,347.2 |  |  |
Mortgage-backed and asset-backed securities |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Cost | 2,027.3 |  |  |
Carrying Value | 2,014.5 |  |  |
Fair Value | 2,014.5 |  |  |
Municipal obligations |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Cost | 18.3 |  |  |
Carrying Value | 17.9 |  |  |
Fair Value | 17.9 |  |  |
Foreign government, agency and provincial obligations |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Cost | 444.2 |  |  |
Carrying Value | 439.9 |  |  |
Fair Value | 439.9 |  |  |
Redeemable preferred stocks |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Cost | 79.9 |  |  |
Carrying Value | 84.8 |  |  |
Fair Value | 84.8 |  |  |
Short-term investments |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Cost | 635.9 |  |  |
Carrying Value | 635.9 |  |  |
Fair Value | 635.9 |  |  |
Common equity securities |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Cost | 890.2 |  |  |
Carrying Value | 1,156.8 |  |  |
Fair Value | 1,156.8 |  |  |
Banks, trust and insurance companies |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Cost | 274.2 |  |  |
Carrying Value | 360.4 |  |  |
Fair Value | 360.4 |  |  |
Public utilities |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Cost | 32.1 |  |  |
Carrying Value | 34.3 |  |  |
Fair Value | 34.3 |  |  |
Industrial, miscellaneous and other |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Cost | 583.9 |  |  |
Carrying Value | 762.1 |  |  |
Fair Value | 762.1 |  |  |
Convertible fixed maturity investments |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Cost | 71.7 |  |  |
Carrying Value | 80.5 |  |  |
Fair Value | 80.5 |  |  |
Other long-term investments |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Cost | 238.3 |  |  |
Carrying Value | 288.9 |  |  |
Fair Value | 288.9 |  |  |
Discontinued Operations |  |  |  |
Summary of investments other than investments in related parties |  |  |  |
Investments reclassified to assets held for sale | $ 236.3 |  | $ 338.1 | $ 111.8
[1] | Carrying value and fair value includes $236.3 classified as assets held for sale relating to discontinued operations. See Note 21 - “Discontinued Operations”.

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