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v3.19.3.a.u2

Business Segments - Segment Net Income (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Segment Net Operating Income (Loss) |  |  |  |  | $ 418.3 | $ 258.4 | $ 92.5
Loss from Early Extinguishment of Debt |  |  |  |  | (4.6) | 0.0 | 0.0
Income from Continuing Operations | $ 5.0 | $ 92.3 | $ 37.5 | $ 53.6 | 531.1 | 188.4 | 119.9
Operating Segments |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Segment Net Operating Income (Loss) |  |  |  |  | 423.7 | 233.0 | 102.8
Operating Segments | Specialty Property & Casualty Insurance |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Segment Net Operating Income (Loss) |  |  |  |  | 283.1 | 115.8 | 56.3
Operating Segments | Preferred Property & Casualty Insurance |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Segment Net Operating Income (Loss) |  |  |  |  | 41.9 | 25.7 | (45.4)
Operating Segments | Life & Health Insurance |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Segment Net Operating Income (Loss) |  |  |  |  | 98.7 | 91.5 | 91.9
Corporate, Non-Segment |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Segment Net Operating Income (Loss) |  |  |  |  | (5.4) | 25.4 | (10.3)
Effects of Tax Law Changes |  |  |  | $ 7.4 | 0.0 | 26.4 |
Partial Satisfaction of Judgment |  |  |  |  | 15.9 | 28.2 | 0.0
Other |  |  |  |  | (21.3) | (29.2) | (17.7)
Segment Reconciling Items |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Change in Fair Value of Equity and Convertible Securities |  |  |  |  | 109.7 | (50.8) | 0.0
Net Realized Gains on Sales of Investments |  |  |  |  | 33.1 | 20.9 | 36.7
Net Impairment Losses Recognized in Earnings |  |  |  |  | (10.9) | (3.6) | (9.3)
Acquisition Related Transaction, Integration and Other Costs |  |  |  |  | $ (14.5) | $ (36.5) | $ 0.0

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