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v3.7.0.1

Segment Reporting - Summary of Gross and Net Written and Earned Premiums, Underwriting Results, Ratios and Reserves for Each of Company's Business Segments (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2016 | Jun. 30, 2017 | Jun. 30, 2016 | Dec. 31, 2016 | Dec. 31, 2015
Underwriting Revenues |  |  |  |  |  |
Gross written premiums | $ 822.1 | $ 801.7 | $ 1,820.1 | $ 1,777.4 |  |
Net written premiums | 578.7 | 724.8 | 1,264.9 | 1,524.5 |  |
Gross earned premiums | 749.7 | 784.5 | 1,501.0 | 1,536.9 |  |
Net earned premiums | 562.0 | 680.8 | 1,143.1 | 1,343.9 |  |
Underwriting Expenses |  |  |  |  |  |
Losses and loss adjustment expenses | 346.1 | 442.2 | 674.3 | 799.6 |  |
Amortization of deferred policy acquisition costs | 96.3 | 126.7 | 210.0 | 256.9 |  |
General and administrative expenses | 106.4 | 96.3 | 212.1 | 199.0 |  |
Underwriting income | 13.2 | 15.6 | 46.7 | 88.4 |  |
Corporate expenses | (11.4) | (20.1) | (24.8) | (37.2) |  |
Non-operating expenses | (2.1) |  | (4.3) |  |  |
Net investment income | 47.4 | 48.0 | 95.1 | 97.5 |  |
Realized and unrealized investment gains | 49.0 | 45.1 | 100.2 | 110.7 |  |
Realized and unrealized investment losses | (7.0) | (8.3) | (12.0) | (28.9) |  |
Change in fair value of loan notes issued by variable interest entities | (3.3) | 0.5 | (6.2) | (3.9) |  |
Change in fair value of derivatives | 17.6 | (0.4) | 20.7 | (7.6) |  |
Interest expense on long term debt | (7.4) | (7.4) | (14.8) | (14.8) |  |
Net realized and unrealized foreign exchange losses | (20.6) | (5.3) | (29.5) | (21.0) |  |
Other income | 3.6 | (0.5) | 7.2 | 0.9 |  |
Other expenses | (2.0) | (1.0) | (2.0) | (1.0) |  |
Income from operations before income tax | 77.0 | 66.2 | 176.3 | 183.1 |  |
Net reserves for loss and loss adjustment expenses | $ 4,792.0 | $ 4,771.1 | $ 4,792.0 | $ 4,771.1 | $ 4,759.2 | $ 4,583.4
Ratios |  |  |  |  |  |
Loss ratio | 61.60% | 65.00% | 59.00% | 59.50% |  |
Policy acquisition expense ratio | 17.10% | 18.60% | 18.40% | 19.10% |  |
General and administrative expense ratio | 21.30% | 17.10% | 21.10% | 17.60% |  |
Expense ratio | 38.40% | 35.70% | 39.50% | 36.70% |  |
Combined ratio | 100.00% | 100.70% | 98.50% | 96.20% |  |
Reinsurance |  |  |  |  |  |
Underwriting Revenues |  |  |  |  |  |
Gross written premiums | $ 335.6 | $ 332.6 | $ 900.9 | $ 850.2 |  |
Net written premiums | 285.5 | 306.8 | 733.7 | 756.3 |  |
Gross earned premiums | 320.6 | 329.8 | 648.2 | 636.6 |  |
Net earned premiums | 272.7 | 299.4 | 550.2 | 579.7 |  |
Underwriting Expenses |  |  |  |  |  |
Losses and loss adjustment expenses | 152.6 | 181.1 | 295.7 | 315.6 |  |
Amortization of deferred policy acquisition costs | 53.4 | 50.7 | 112.9 | 110.1 |  |
General and administrative expenses | 40.7 | 39.1 | 84.6 | 83.2 |  |
Underwriting income | 26.0 | 28.5 | 57.0 | 70.8 |  |
Net reserves for loss and loss adjustment expenses | $ 2,445.0 | $ 2,474.6 | $ 2,445.0 | $ 2,474.6 |  |
Ratios |  |  |  |  |  |
Loss ratio | 56.00% | 60.50% | 53.70% | 54.40% |  |
Policy acquisition expense ratio | 19.60% | 16.90% | 20.50% | 19.00% |  |
General and administrative expense ratio | 14.90% | 13.10% | 15.40% | 14.40% |  |
Expense ratio | 34.50% | 30.00% | 35.90% | 33.40% |  |
Combined ratio | 90.50% | 90.50% | 89.60% | 87.80% |  |
Insurance |  |  |  |  |  |
Underwriting Revenues |  |  |  |  |  |
Gross written premiums | $ 486.5 | $ 469.1 | $ 919.2 | $ 927.2 |  |
Net written premiums | 293.2 | 418.0 | 531.2 | 768.2 |  |
Gross earned premiums | 429.1 | 454.7 | 852.8 | 900.3 |  |
Net earned premiums | 289.3 | 381.4 | 592.9 | 764.2 |  |
Underwriting Expenses |  |  |  |  |  |
Losses and loss adjustment expenses | 193.5 | 261.1 | 378.6 | 484.0 |  |
Amortization of deferred policy acquisition costs | 42.9 | 76.0 | 97.1 | 146.8 |  |
General and administrative expenses | 65.7 | 57.2 | 127.5 | 115.8 |  |
Underwriting income | (12.8) | (12.9) | (10.3) | 17.6 |  |
Net reserves for loss and loss adjustment expenses | $ 2,347.0 | $ 2,296.5 | $ 2,347.0 | $ 2,296.5 |  |
Ratios |  |  |  |  |  |
Loss ratio | 66.90% | 68.50% | 63.90% | 63.30% |  |
Policy acquisition expense ratio | 14.80% | 19.90% | 16.40% | 19.20% |  |
General and administrative expense ratio | 22.70% | 15.00% | 21.50% | 15.20% |  |
Expense ratio | 37.50% | 34.90% | 37.90% | 34.40% |  |
Combined ratio | 104.40% | 103.40% | 101.80% | 97.70% |  |

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