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Schedule IV - Reinsurance | 12 Months Ended
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Dec. 31, 2022
SEC Schedule, 12-17, Insurance Companies, Reinsurance [Abstract] |
Schedule IV - Reinsurance | SCHEDULE IV - REINSURANCE For the Twelve Months Ended December 31, 2022, 2021 and 2020 Premiums Written
| Direct |  | Assumed |  | Ceded |  | Net Amount
| ($ in millions)
2022 | $ | 2,531.7 |  |  | $ | 1,807.0 |  |  | $ | (1,442.7) |  |  | $ | 2,896.0 |
2021 | $ | 2,341.4 |  |  | $ | 1,597.0 |  |  | $ | (1,350.7) |  |  | $ | 2,587.7 |
2020 | $ | 2,042.1 |  |  | $ | 1,656.4 |  |  | $ | (1,120.7) |  |  | $ | 2,577.8 |
Premiums Earned
| Gross Amount |  | Assumed From Other Companies |  | Ceded to Other Companies |  | Net Amount |  | Percentage of Amount Assumed to Net
| ($ in millions, except for percentages)
2022 | $ | 2,370.8 |  |  | $ | 1,617.2 |  |  | $ | (1,299.3) |  |  | $ | 2,688.7 |  |  | 60.1 | %
2021 | $ | 2,139.1 |  |  | $ | 1,479.2 |  |  | $ | (1,207.8) |  |  | $ | 2,410.5 |  |  | 61.4 | %
2020 | $ | 2,026.4 |  |  | $ | 1,612.0 |  |  | $ | (1,110.9) |  |  | $ | 2,527.5 |  |  | 63.8 | %

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- Definition The entire disclosure for the supplemental schedule of reinsurance information. Reinsurance schedule includes, but is not limited to, the type of insurance, gross amount of premiums, premiums ceded to other entities, premiums assumed from other entities, net amount of premium revenue, and the percentage of the premiums assumed to net premium revenue. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 12 -Subsection 17 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) -URI https://asc.fasb.org/extlink&oid=120401096&loc=d3e574992-122915 + Details
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