XML 39 R79.htm IDEA: XBRL DOCUMENT v2.4.0.6
Investment Securities (Fair Value Measurement by Level) (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2012
Debt securities issued by industrial corporations
Dec. 31, 2011
Debt securities issued by industrial corporations
Dec. 31, 2012
Fair value
Dec. 31, 2011
Fair value
Dec. 31, 2010
Fair value
Dec. 31, 2012
Fair value
Mortgage-backed and asset-backed securities
Dec. 31, 2011
Fair value
Mortgage-backed and asset-backed securities
Dec. 31, 2012
Level 1
Dec. 31, 2011
Level 1
Dec. 31, 2010
Level 1
Dec. 31, 2012
Level 2
Dec. 31, 2011
Level 2
Dec. 31, 2010
Level 2
Dec. 31, 2012
Level 2
Mortgage-backed and asset-backed securities
Dec. 31, 2011
Level 2
Mortgage-backed and asset-backed securities
Dec. 31, 2012
Level 3
Mortgage-backed and asset-backed securities
Dec. 31, 2011
Level 3
Mortgage-backed and asset-backed securities
Dec. 31, 2012
Level 3
Fixed maturity investments
Dec. 31, 2011
Level 3
Fixed maturity investments
Dec. 31, 2010
Level 3
Fixed maturity investments
Dec. 31, 2012
Level 3
Common equity securities
Dec. 31, 2011
Level 3
Common equity securities
Dec. 31, 2010
Level 3
Common equity securities
Dec. 31, 2012
Level 3
Convertible fixed maturity investments
Dec. 31, 2011
Level 3
Convertible fixed maturity investments
Dec. 31, 2010
Level 3
Convertible fixed maturity investments
Dec. 31, 2012
Level 3
Other long-term investments
Dec. 31, 2011
Level 3
Other long-term investments
Dec. 31, 2010
Level 3
Other long-term investments
Dec. 31, 2012
Fair value measured on a recurring basis
Debt securities issued by industrial corporations
Basic materials
Dec. 31, 2012
Fair value measured on a recurring basis
Discontinued Operations
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
US Government and agency obligations
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
US Government and agency obligations
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Consumer
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Consumer
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Industrial
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Industrial
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Financials
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Financials
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Communications
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Communications
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Basic materials
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Energy
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Energy
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Utilities
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Utilities
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Technology
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Technology
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Diversified
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Debt securities issued by industrial corporations
Other
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Municipal obligations
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Municipal obligations
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Mortgage-backed and asset-backed securities
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Mortgage-backed and asset-backed securities
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Foreign government, agency and provincial obligations
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Foreign government, agency and provincial obligations
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Preferred stocks
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Preferred stocks
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Fixed maturity investments
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Fixed maturity investments
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Short-term investments
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Short-term investments
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Common equity securities
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Common equity securities
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Common equity securities
Consumer
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Common equity securities
Consumer
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Common equity securities
Financials
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Common equity securities
Financials
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Common equity securities
Basic materials
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Common equity securities
Basic materials
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Common equity securities
Energy
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Common equity securities
Energy
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Common equity securities
Utilities
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Common equity securities
Utilities
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Common equity securities
Technology
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Common equity securities
Technology
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Common equity securities
Other
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Common equity securities
Other
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Convertible fixed maturity investments
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Convertible fixed maturity investments
Dec. 31, 2012
Fair value measured on a recurring basis
Fair value
Other long-term investments
Dec. 31, 2011
Fair value measured on a recurring basis
Fair value
Other long-term investments
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
US Government and agency obligations
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
US Government and agency obligations
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Consumer
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Consumer
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Industrial
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Industrial
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Financials
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Financials
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Communications
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Communications
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Basic materials
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Basic materials
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Energy
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Energy
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Utilities
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Utilities
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Technology
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Technology
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Diversified
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Debt securities issued by industrial corporations
Other
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Municipal obligations
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Municipal obligations
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Mortgage-backed and asset-backed securities
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Mortgage-backed and asset-backed securities
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Foreign government, agency and provincial obligations
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Foreign government, agency and provincial obligations
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Preferred stocks
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Preferred stocks
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Fixed maturity investments
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Fixed maturity investments
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Short-term investments
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Short-term investments
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Common equity securities
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Common equity securities
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Common equity securities
Consumer
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Common equity securities
Consumer
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Common equity securities
Financials
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Common equity securities
Financials
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Common equity securities
Basic materials
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Common equity securities
Basic materials
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Common equity securities
Energy
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Common equity securities
Energy
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Common equity securities
Utilities
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Common equity securities
Utilities
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Common equity securities
Technology
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Common equity securities
Technology
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Common equity securities
Other
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Common equity securities
Other
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Convertible fixed maturity investments
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Convertible fixed maturity investments
Dec. 31, 2012
Fair value measured on a recurring basis
Level 1
Other long-term investments
Dec. 31, 2011
Fair value measured on a recurring basis
Level 1
Other long-term investments
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
US Government and agency obligations
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
US Government and agency obligations
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Consumer
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Consumer
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Industrial
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Industrial
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Financials
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Financials
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Communications
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Communications
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Basic materials
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Basic materials
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Energy
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Energy
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Utilities
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Utilities
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Technology
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Technology
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Diversified
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Debt securities issued by industrial corporations
Other
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Municipal obligations
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Municipal obligations
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Mortgage-backed and asset-backed securities
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Mortgage-backed and asset-backed securities
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Foreign government, agency and provincial obligations
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Foreign government, agency and provincial obligations
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Preferred stocks
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Preferred stocks
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Fixed maturity investments
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Fixed maturity investments
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Short-term investments
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Short-term investments
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Common equity securities
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Common equity securities
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Common equity securities
Consumer
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Common equity securities
Consumer
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Common equity securities
Financials
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Common equity securities
Financials
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Common equity securities
Basic materials
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Common equity securities
Basic materials
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Common equity securities
Energy
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Common equity securities
Energy
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Common equity securities
Utilities
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Common equity securities
Utilities
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Common equity securities
Technology
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Common equity securities
Technology
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Common equity securities
Other
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Common equity securities
Other
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Convertible fixed maturity investments
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Convertible fixed maturity investments
Dec. 31, 2012
Fair value measured on a recurring basis
Level 2
Other long-term investments
Dec. 31, 2011
Fair value measured on a recurring basis
Level 2
Other long-term investments
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
US Government and agency obligations
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
US Government and agency obligations
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Consumer
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Consumer
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Industrial
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Industrial
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Financials
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Financials
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Communications
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Communications
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Basic materials
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Basic materials
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Energy
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Energy
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Utilities
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Utilities
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Technology
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Technology
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Diversified
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Debt securities issued by industrial corporations
Other
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Municipal obligations
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Municipal obligations
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Mortgage-backed and asset-backed securities
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Mortgage-backed and asset-backed securities
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Foreign government, agency and provincial obligations
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Foreign government, agency and provincial obligations
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Preferred stocks
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Preferred stocks
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Fixed maturity investments
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Fixed maturity investments
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Short-term investments
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Short-term investments
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Common equity securities
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Common equity securities
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Common equity securities
Consumer
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Common equity securities
Consumer
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Common equity securities
Financials
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Common equity securities
Financials
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Common equity securities
Basic materials
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Common equity securities
Basic materials
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Common equity securities
Energy
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Common equity securities
Energy
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Common equity securities
Utilities
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Common equity securities
Utilities
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Common equity securities
Technology
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Common equity securities
Technology
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Common equity securities
Other
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Common equity securities
Other
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Convertible fixed maturity investments
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Convertible fixed maturity investments
Dec. 31, 2012
Fair value measured on a recurring basis
Level 3
Other long-term investments
Dec. 31, 2011
Fair value measured on a recurring basis
Level 3
Other long-term investments
Dec. 31, 2010
Fair value measured on a recurring basis
Level 3
Other long-term investments
Investment securities                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                  
Fair value investments     $ 2,385,100,000 [1] $ 2,135,100,000 [1] $ 7,581,300,000 [2],[3] $ 8,346,800,000 [2],[3],[4],[5] $ 7,901,600,000 [4] $ 2,095,600,000 $ 3,222,900,000 $ 1,985,700,000 $ 1,879,100,000 $ 1,894,400,000 $ 5,206,100,000 $ 6,088,200,000 $ 5,477,400,000 $ 2,073,500,000 $ 3,207,800,000 $ 22,100,000 $ 15,100,000 $ 92,900,000 $ 78,900,000 $ 128,400,000 $ 37,300,000 $ 32,300,000 $ 71,200,000 $ 0 $ 0 $ 0.0 $ 259,300,000 $ 268,300,000 [4] $ 330,200,000 [4] $ 189,100,000   $ 7,581,300,000 $ 8,346,800,000 $ 440,100,000 $ 305,000,000 $ 2,385,100,000 $ 2,135,100,000 $ 727,100,000 $ 790,700,000 $ 330,800,000 $ 359,400,000 $ 401,400,000 $ 239,600,000 $ 276,100,000 $ 225,800,000 $ 195,700,000 $ 181,500,000 $ 155,800,000 $ 204,200,000 $ 140,100,000 $ 54,000,000 $ 24,500,000 $ 3,500,000 $ 20,900,000 $ 5,200,000 $ 2,700,000 $ 2,095,600,000 $ 3,222,900,000 $ 521,900,000 $ 589,200,000 $ 86,400,000 $ 78,800,000 $ 5,534,300,000 [6] $ 6,333,700,000 [7] $ 630,600,000 $ 846,000,000 $ 1,029,700,000 $ 755,000,000 $ 255,600,000 $ 188,800,000 $ 324,500,000 $ 219,200,000 $ 103,300,000 $ 121,000,000 $ 101,000,000 $ 72,600,000 $ 43,600,000 $ 42,000,000 $ 90,200,000 $ 25,800,000 $ 111,500,000 $ 85,600,000 $ 127,400,000 $ 143,800,000 $ 259,300,000 [8] $ 268,300,000 [9] $ 1,985,700,000 $ 1,879,100,000 $ 369,100,000 $ 296,200,000 $ 1,000,000 $ 3,800,000 $ 0 $ 0 $ 0 $ 0 $ 1,000,000 $ 3,800,000 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 52,100,000 $ 65,700,000 $ 0 $ 0 $ 422,200,000 [6] $ 365,700,000 [7] $ 630,600,000 $ 846,000,000 $ 932,900,000 $ 667,400,000 $ 255,600,000 $ 188,500,000 $ 286,300,000 $ 185,800,000 $ 103,300,000 $ 119,900,000 $ 101,000,000 $ 72,600,000 $ 43,400,000 $ 41,800,000 $ 90,200,000 $ 25,800,000 $ 53,100,000 $ 33,000,000 $ 0 $ 0 $ 0 [8] $ 0 [9] $ 5,206,100,000 $ 6,088,200,000 $ 71,000,000 $ 8,800,000 $ 2,384,100,000 $ 2,131,300,000 $ 727,100,000 $ 790,700,000 $ 330,800,000 $ 359,400,000 $ 400,400,000 $ 235,800,000 $ 276,100,000 $ 225,800,000 $ 189,100,000 $ 195,700,000 $ 181,500,000 $ 155,800,000 $ 204,200,000 $ 140,100,000 $ 54,000,000 $ 24,500,000 $ 3,500,000 $ 20,900,000 $ 5,200,000 $ 2,700,000 $ 2,073,500,000 $ 3,207,800,000 $ 469,800,000 $ 523,500,000 $ 15,600,000 $ 15,000,000 $ 5,019,200,000 [6] $ 5,889,100,000 [7] $ 0 $ 0 $ 59,500,000 $ 55,300,000 $ 0 $ 300,000 $ 900,000 $ 1,500,000 $ 0 $ 1,100,000 $ 0 $ 0 $ 200,000 $ 200,000 $ 0 $ 0 $ 58,400,000 $ 52,200,000 $ 127,400,000 $ 143,800,000 $ 0 [8] $ 0 [9] $ 389,500,000 $ 379,500,000 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 22,100,000 $ 15,100,000 $ 0 $ 0 $ 70,800,000 $ 63,800,000 $ 92,900,000 [6] $ 78,900,000 [7] $ 0 $ 0 $ 37,300,000 $ 32,300,000 $ 0 $ 0 $ 37,300,000 $ 31,900,000 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 0 $ 400,000 $ 0 $ 0 $ 259,300,000 [8] $ 268,300,000 [9]  
Carrying value of investment accounted for using the equity method                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             35,000,000 33,000,000 41,900,000
Change in fair value of derivatives, included in other revenues                                                                 (100,000)                                                                                                                                                                                                                                                                                                                                                                                                                                                                
Fixed maturity investments reclassified to assets held for sale (1) $ (338,100,000) [10] $ (111,800,000) [10]                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
[1] Credit ratings are assigned based on the following hierarchy: 1) Standard & Poor’s Financial Services LLC (“Standard & Poor’s”) and 2) Moody’s Investor Service (“Moody’s”)
[2] Excludes carrying value of $33.0 and $35.0 at January 1, 2012 and December 31, 2012 associated with other long-term investments accounted for using the equity method and $(0.1) at December 31, 2012 related to currency forward contracts.
[3] Carrying value includes $111.8 and $338.1 at January 1, 2012 and December 31, 2012 that is classified as assets held for sale relating to discontinued operations.
[4] Excludes carrying value of $33.0 and $41.9 at December 31, 2011 and January 1, 2011 associated with other long-term investment limited partnerships accounted for using the equity method.
[5] Carrying value includes $111.8 that is classified as assets held for sale relating to AutoOne discontinued operations.
[6] Carrying value includes $338.1 that is classified as assets held for sale relating to discontinued operations.
[7] Carrying value includes $111.8 that is classified as assets held for sale relating to discontinued operations.
[8] Excludes carrying value of $35.0 associated with other long-term investment limited partnerships accounted for using the equity method and $(0.1) related to currency forward contracts.
[9] Excludes carrying value of $33.0 associated with other long-term investments accounted for using the equity method.
[10] Assets held for sale related to discontinued operations. See Note 20.