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Schedule III - Supplementary Insurance Information | 12 Months Ended
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Dec. 31, 2020
SEC Schedule, 12-16, Insurance Companies, Supplementary Insurance Information [Abstract] |
Schedule III - Supplementary Insurance Information | SCHEDULE III - SUPPLEMENTARY INSURANCE INFORMATION For the Twelve Months Ended December 31, 2020, 2019 and 2018 Supplementary Information ($ in millions)
Year Ended December 31, 2020 |  | Deferred Policy Acquisition Costs |  | Net Reserves for Losses and LAE |  | Net Reserves for Unearned Premiums |  | Net Premiums Earned |  | Net Investment Income |  | Losses and LAE Expenses |  | Policy Acquisition Expenses |  | Net Premium Written |  | General and Administrative Expenses
Reinsurance |  | $ | 206.8 |  |  | $ | 2,095.7 |  |  | $ | 617.6 |  |  | $ | 1,292.1 |  |  |  |  | $ | 958.6 |  |  | $ | 246.0 |  |  | $ | 1,302.1 |  |  | $ | 110.8 |
Insurance |  | 99.8 |  |  | 1,874.4 |  |  | 746.1 |  |  | 1,240.5 |  |  |  |  | 882.2 |  |  | 219.7 |  |  | 1,280.8 |  |  | 197.2 |
Total |  | $ | 306.6 |  |  | $ | 3,970.1 |  |  | $ | 1,363.7 |  |  | $ | 2,532.6 |  |  | $ | 154.6 |  |  | $ | 1,840.8 |  |  | $ | 465.7 |  |  | $ | 2,582.9 |  |  | $ | 308.0 |
Year to date December 31, 2019 |  | Deferred Policy Acquisition Costs |  | Net Reserves for Losses and LAE |  | Net Reserves for Unearned Premiums |  | Net Premiums Earned |  | Net Investment Income |  | Losses and LAE Expenses |  | Policy Acquisition Expenses |  | Net Premium Written |  | General and Administrative Expenses
Reinsurance |  | $ | 210.3 |  |  | $ | 2,605.9 |  |  | $ | 599.9 |  |  | $ | 1,255.2 |  |  |  |  | $ | 917.9 |  |  | $ | 264.9 |  |  | $ | 1,251.1 |  |  | $ | 111.7 |
Insurance |  | 80.8 |  |  | 2,026.1 |  |  | 694.1 |  |  | 1,038.1 |  |  |  |  | 761.8 |  |  | 147.8 |  |  | 1,176.8 |  |  | 229.8 |
Total |  | $ | 291.1 |  |  | $ | 4,632.0 |  |  | $ | 1,294.0 |  |  | $ | 2,293.3 |  |  | $ | 197.3 |  |  | $ | 1,679.7 |  |  | $ | 412.7 |  |  | $ | 2,427.9 |  |  | $ | 341.5 |
Year to date December 31, 2018 |  | Deferred Policy Acquisition Costs |  | Net Reserves for Losses and LAE |  | Net Reserves for Unearned Premiums |  | Net Premiums Earned |  | Net Investment Income |  | Losses and LAE Expenses |  | Policy Acquisition Expenses |  | Net Premium Written |  | General and Administrative Expenses
Reinsurance |  | $ | 208.3 |  |  | $ | 2,843.6 |  |  | $ | 616.0 |  |  | $ | 1,256.4 |  |  |  |  | $ | 927.0 |  |  | $ | 260.9 |  |  | $ | 1,182.9 |  |  | $ | 118.5 |
Insurance |  | 40.2 |  |  | 2,153.0 |  |  | 534.3 |  |  | 958.3 |  |  |  |  | 646.0 |  |  | 110.7 |  |  | 899.1 |  |  | 239.2 |
Total |  | $ | 248.5 |  |  | $ | 4,996.6 |  |  | $ | 1,150.3 |  |  | $ | 2,214.7 |  |  | $ | 198.2 |  |  | $ | 1,573.0 |  |  | $ | 371.6 |  |  | $ | 2,082.0 |  |  | $ | 357.7 |

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- Definition The entire disclosure for supplementary insurance information by segment. Includes, but is not limited to, deferred policy acquisition cost; future policy benefit, loss, claim and loss expenses; unearned premium; other policy claim and benefit payable; premium revenue; net investment income; benefit, claim, loss and settlement expenses; amortization of deferred policy acquisition cost; other operating expense; and premium written. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 16 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 1 -Subparagraph (SX 210.12-16) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574960-122915 + Details
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