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Segment Information (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 | Sep. 30, 2015 | Sep. 30, 2016 | Sep. 30, 2015
Segment reporting information |  |  |  |
Premiums Earned, Net | $ 281.3 | $ 284.9 | $ 838.1 | $ 896.0
Net investment income | 22.5 | 16.8 | 59.6 | 42.6
Net investment income (loss) - surplus note interest | 0.0 | 0.0 | 0.0 | 0.0
Net realized and unrealized investment gains (losses) | 26.4 | (43.9) | 84.0 | (33.9)
Other Income | 34.8 | 38.3 | 110.8 | 114.4
Total revenues | 365.0 | 296.1 | 1,092.5 | 1,019.1
Loss and loss adjustment expenses | 165.0 | 170.0 | 508.1 | 534.1
Insurance and Reinsurance Acquisition Expenses | 56.4 | 55.3 | 159.2 | 166.1
Other Underwriting Expense | 49.6 | 56.5 | 156.0 | 165.5
General and administrative expenses | 70.2 | 97.3 | 230.4 | 231.6
Amortization of Intangible Assets | 3.0 | 2.6 | 9.4 | 7.9
Interest expense | 3.8 | 3.9 | 12.4 | 10.8
Total expenses | 345.0 | 383.0 | 1,066.1 | 1,108.1
Pre-tax (loss) income | 20.0 | (86.9) | 26.4 | (89.0)
OneBeacon [Member] |  |  |  |
Segment reporting information |  |  |  |
Premiums Earned, Net | 277.9 | 281.4 | 827.9 | 887.3
Net investment income | 11.8 | 12.4 | 38.3 | 33.0
Net investment income (loss) - surplus note interest | 0.0 | 0.0 | 0.0 | 0.0
Net realized and unrealized investment gains (losses) | 15.5 | (29.9) | 56.8 | (29.7)
Other Income | 1.8 | 3.9 | 3.5 | (0.4)
Total revenues | 307.0 | 267.8 | 926.5 | 890.2
Loss and loss adjustment expenses | 162.8 | 167.5 | 501.3 | 527.9
Insurance and Reinsurance Acquisition Expenses | 55.1 | 53.8 | 154.8 | 161.2
Other Underwriting Expense | 49.4 | 56.4 | 155.6 | 165.2
Interest expense | 3.3 | 3.2 | 9.8 | 9.7
Total expenses | 274.1 | 284.6 | 832.4 | 876.0
Pre-tax (loss) income | 32.9 | (16.8) | 94.1 | 14.2
HG Global |  |  |  |
Segment reporting information |  |  |  |
Premiums Earned, Net | 1.2 | 0.6 | 3.1 | 1.7
Net investment income | 0.6 | 0.5 | 1.6 | 1.4
Net investment income (loss) - surplus note interest | 4.5 | 4.0 | 13.4 | 11.9
Net realized and unrealized investment gains (losses) | (0.3) | 0.6 | 2.3 | 0.3
Other Income | 0.0 | 0.0 | 0.0 | 0.0
Total revenues | 6.0 | 5.7 | 20.4 | 15.3
Loss and loss adjustment expenses | 0.0 | 0.0 | 0.0 | 0.0
Insurance and Reinsurance Acquisition Expenses | 0.2 | 0.1 | 0.6 | 0.3
Other Underwriting Expense | 0.0 | 0.0 | 0.0 | 0.0
Interest expense | 0.0 | 0.0 | 0.0 | 0.0
Total expenses | 0.8 | 0.5 | 2.0 | 1.5
Pre-tax (loss) income | 5.2 | 5.2 | 18.4 | 13.8
BAM |  |  |  |
Segment reporting information |  |  |  |
Premiums Earned, Net | 0.3 | 0.3 | 1.0 | 0.6
Net investment income | 1.7 | 1.1 | 5.1 | 2.9
Net investment income (loss) - surplus note interest | (4.5) | (4.0) | (13.4) | (11.9)
Net realized and unrealized investment gains (losses) | (1.6) | 1.7 | 6.5 | 2.8
Other Income | 0.4 | 0.2 | 0.8 | 0.5
Total revenues | (3.7) | (0.7) | 0.0 | (5.1)
Loss and loss adjustment expenses | 0.0 | 0.0 | 0.0 | 0.0
Insurance and Reinsurance Acquisition Expenses | 0.6 | 0.4 | 1.9 | 1.8
Other Underwriting Expense | 0.1 | 0.1 | 0.3 | 0.3
Interest expense | 0.0 | 0.0 | 0.0 | 0.0
Total expenses | 10.0 | 9.9 | 30.3 | 28.4
Pre-tax (loss) income | (13.7) | (10.6) | (30.3) | (33.5)
Other Operations |  |  |  |
Segment reporting information |  |  |  |
Premiums Earned, Net | 1.9 | 2.6 | 6.1 | 6.4
Net investment income | 8.4 | 2.8 | 14.6 | 5.3
Net investment income (loss) - surplus note interest | 0.0 | 0.0 | 0.0 | 0.0
Net realized and unrealized investment gains (losses) | 12.8 | (16.3) | 18.4 | (7.3)
Other Income | 32.6 | 34.2 | 106.5 | 114.3
Total revenues | 55.7 | 23.3 | 145.6 | 118.7
Loss and loss adjustment expenses | 2.2 | 2.5 | 6.8 | 6.2
Insurance and Reinsurance Acquisition Expenses | 0.5 | 1.0 | 1.9 | 2.8
Other Underwriting Expense | 0.1 | 0.0 | 0.1 | 0.0
Interest expense | 0.5 | 0.7 | 2.6 | 1.1
Total expenses | 60.1 | 88.0 | 201.4 | 202.2
Pre-tax (loss) income | (4.4) | (64.7) | (55.8) | (83.5)
Segment Reconciling Items [Member] |  |  |  |
Segment reporting information |  |  |  |
General and administrative expenses | 67.2 | 94.7 | 221.0 | 223.7
Segment Reconciling Items [Member] | OneBeacon [Member] |  |  |  |
Segment reporting information |  |  |  |
General and administrative expenses | 3.2 | 3.4 | 10.0 | 11.0
Segment Reconciling Items [Member] | HG Global |  |  |  |
Segment reporting information |  |  |  |
General and administrative expenses | 0.6 | 0.4 | 1.4 | 1.2
Segment Reconciling Items [Member] | BAM |  |  |  |
Segment reporting information |  |  |  |
General and administrative expenses | 9.3 | 9.4 | 28.1 | 26.3
Segment Reconciling Items [Member] | Other Operations |  |  |  |
Segment reporting information |  |  |  |
General and administrative expenses | 54.1 | 81.5 | 181.5 | 185.2
General and Administrative Expense [Member] |  |  |  |
Segment reporting information |  |  |  |
Amortization of Intangible Assets | 3.0 | 2.6 | 9.4 | 7.9
General and Administrative Expense [Member] | OneBeacon [Member] |  |  |  |
Segment reporting information |  |  |  |
Amortization of Intangible Assets | 0.3 | 0.3 | 0.9 | 1.0
General and Administrative Expense [Member] | HG Global |  |  |  |
Segment reporting information |  |  |  |
Amortization of Intangible Assets | 0.0 | 0.0 | 0.0 | 0.0
General and Administrative Expense [Member] | BAM |  |  |  |
Segment reporting information |  |  |  |
Amortization of Intangible Assets | 0.0 | 0.0 | 0.0 | 0.0
General and Administrative Expense [Member] | Other Operations |  |  |  |
Segment reporting information |  |  |  |
Amortization of Intangible Assets | 2.7 | 2.3 | 8.5 | 6.9
Star & Shield Insurance Exchange |  |  |  |
Segment reporting information |  |  |  |
Other Income |  |  | (21.0) |
MediaAlpha [Member] | Other Operations |  |  |  |
Segment reporting information |  |  |  |
Other Income | 27.6 | 28.3 | 88.4 | 81.2
General and administrative expenses | $ 26.2 | $ 26.2 | $ 82.7 | $ 75.8

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