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Reclassifications from Accumulated Other Comprehensive Income (Tables) | 12 Months Ended
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Dec. 31, 2017
Equity [Abstract] |
Schedule of Accumulated Other Comprehensive Income Reclassification | The following table sets out the components of the Company’s AOCI that are reclassified into the audited condensed consolidated statement of operations for the twelve months ended December 31, 2017 and 2016:
|  | Amount Reclassified from AOCI |
Details about the AOCI Components |  | Twelve Months Ended December 31, 2017 |  | Twelve Months Ended December 31, 2016 |  | Affected Line Item in the Consolidated Statement of Operations
|  | ($ in millions) |  |
Available for sale securities: |  |  |  |
Realized gain on sale of securities |  | $ | 10.7 |  |  | $ | 18.8 |  |  | Realized and unrealized investment gains
Realized (losses) on sale of securities |  | (6.7 | ) |  | (8.9 | ) |  | Realized and unrealized investment losses
|  | 4.0 |  |  | 9.9 |  |  | (Loss)/income from operations before income tax
Tax on net realized gains of securities |  | (0.4 | ) |  | (1.0 | ) |  | Income tax expense
|  | $ | 3.6 |  |  | $ | 8.9 |  |  | Net income
Realized derivatives: |  |  |  |  |  |
Net realized (losses) on settled derivatives |  | 4.4 |  |  | (8.7 | ) |  | General, administrative and corporate expenses
Tax on settled derivatives |  | (0.8 | ) |  | — |  |  | Income tax expense
|  | $ | 3.6 |  |  | $ | (8.7 | ) |  | Net income
Total reclassifications from AOCI to the statement of operations, net of income tax |  | $ | 7.2 |  |  | $ | 0.2 |  |  | Net income

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- Definition Tabular disclosure of the components of accumulated other comprehensive income (loss). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section 45 -Paragraph 14A -URI http://asc.fasb.org/extlink&oid=84228862&loc=SL7669686-108580 + Details
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