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v3.20.2

Business Segments - Earned Premiums by Product Line (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2020 | Jun. 30, 2019 | Jun. 30, 2020 | Jun. 30, 2019
Segment Reporting Information [Line Items] |  |  |  |
Earned Premiums | $ 1,085.3 | $ 1,116.6 | $ 2,251.7 | $ 2,191.4
Operating Segments | Specialty Property & Casualty Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Earned Premiums | 759.0 | 766.0 | 1,581.5 | 1,495.3
Operating Segments | Preferred Property & Casualty Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Earned Premiums | 163.6 | 188.5 | 344.5 | 374.1
Operating Segments | Life & Health Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Earned Premiums | 162.7 | 162.1 | 325.7 | 322.0
Operating Segments | Specialty Automobile | Specialty Property & Casualty Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Earned Premiums | 689.8 | 703.7 | 1,443.0 | 1,373.3
Operating Segments | Commercial Automobile | Specialty Property & Casualty Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Earned Premiums | 69.2 | 62.3 | 138.5 | 122.0
Operating Segments | Personal Automobile | Preferred Property & Casualty Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Earned Premiums | 99.1 | 117.9 | 214.0 | 233.3
Operating Segments | Homeowners | Preferred Property & Casualty Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Earned Premiums | 55.6 | 60.8 | 112.4 | 121.1
Operating Segments | Other Personal Lines | Preferred Property & Casualty Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Earned Premiums | 8.9 | 9.8 | 18.1 | 19.7
Operating Segments | Life | Life & Health Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Earned Premiums | 95.7 | 97.0 | 192.9 | 192.8
Operating Segments | Accident and Health | Life & Health Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Earned Premiums | 50.8 | 47.9 | 100.2 | 94.8
Operating Segments | Property | Life & Health Insurance |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Earned Premiums | $ 16.2 | $ 17.2 | $ 32.6 | $ 34.4

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- Definition Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(1)) -URI http://asc.fasb.org/extlink&oid=120400993&loc=SL114874131-224263 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-17(Column E)) -URI http://asc.fasb.org/extlink&oid=120401096&loc=d3e574992-122915 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(13)(c)) -URI http://asc.fasb.org/extlink&oid=120399700&loc=SL114874048-224260 Reference 4: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (c)(3) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 + Details
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