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Schedule III - Supplementary Insurance Information | 12 Months Ended
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Dec. 31, 2018
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, 2018, 2017 and 2016 Supplementary Information ($ in millions)
Year Ended 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 |
Year to date December 31, 2017 |  | 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 |  | $ | 263.0 |  |  | $ | 2,917.1 |  |  | $ | 1,067.3 |  |  | $ | 1,206.1 |  |  |  |  | $ | 1,116.4 |  |  | $ | 235.5 |  |  | $ | 1,250.0 |  |  | $ | 157.3 |
Insurance |  | 31.3 |  |  | 2,317.2 |  |  | 268.0 |  |  | 1,100.5 |  |  |  |  | 878.3 |  |  | 165.0 |  |  | 962.5 |  |  | 253.9 |
Total |  | $ | 294.3 |  |  | $ | 5,234.3 |  |  | $ | 1,335.3 |  |  | $ | 2,306.6 |  |  | $ | 189.0 |  |  | $ | 1,994.7 |  |  | $ | 400.5 |  |  | $ | 2,212.5 |  |  | $ | 411.2 |
Year to date December 31, 2016 |  | 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 |  | $ | 239.6 |  |  | $ | 2,462.1 |  |  | $ | 813.3 |  |  | $ | 1,181.9 |  |  |  |  |  | $ | 657.9 |  |  | $ | 226.4 |  |  | $ | 1,269.2 |  |  | $ | 178.2 |
Insurance |  | 118.8 |  |  | 2,297.1 |  |  | 550.1 |  |  | 1,455.4 |  |  |  |  |  | 918.2 |  |  | 302.5 |  |  | 1,324.5 |  |  | 228.4 |
Total |  | $ | 358.4 |  |  | $ | 4,759.2 |  |  | $ | 1,363.4 |  |  | $ | 2,637.3 |  |  | $ | 187.1 |  |  | $ | 1,576.1 |  |  | $ | 528.9 |  |  | $ | 2,593.7 |  |  | $ | 406.6 |

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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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