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Held for Sale and Discontinued Operations - Narrative (Details) - USD ($) $ in Millions |  | 3 Months Ended | 9 Months Ended |
--- | --- | --- | --- | ---
Aug. 20, 2020 | Sep. 30, 2020 | Sep. 30, 2019 | Sep. 30, 2020 | Sep. 30, 2019 | Dec. 31, 2019
Discontinued Operations [Line Items} |  |  |  |  |  |
Net gain from sale of discontinued operations, net of tax |  | $ (0.7) | $ 0.9 | $ (0.8) | $ 1.6 |
Connecticut | Discontinued Operations, Held-for-sale |  |  |  |  |  |
Discontinued Operations [Line Items} |  |  |  |  |  |
Proceeds from Sale of Property Held-for-sale | $ 2.3 |  |  |  |  |
Gains (Losses) on Sales of Other Real Estate |  |  |  | (0.1) |  |
Assets held for sale |  | 0.7 |  | 0.7 |  | $ 3.0
Swedish Tax Authority | Sirius Group |  |  |  |  |  |
Discontinued Operations [Line Items} |  |  |  |  |  |
Contingent liability |  | 17.2 |  | 17.2 |  | $ 16.5
Sirius Group | Swedish Tax Authority | Sirius Group |  |  |  |  |  |
Discontinued Operations [Line Items} |  |  |  |  |  |
Change in contingent liability |  | $ (0.7) |  | $ (0.7) |  |

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- Definition Amount of other assets held-for-sale that are not part of a disposal group. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 15 -Paragraph 4 -Subparagraph (b)(2) -URI http://asc.fasb.org/extlink&oid=121558832&loc=d3e400-110220 + Details
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