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Funds Withheld Receivables (Details) $ in Millions | 3 Months Ended |
--- | --- | ---
Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Sep. 30, 2016 USD ($)
Schedule of Available-for-sale Securities [Line Items] |  |  |
Document Fiscal Year Focus | 2017 |  |
Document Period End Date | Dec. 31, 2016 |  |
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Amortized Cost Basis | $ 24.9 |  |
Available-for-sale Securities, Debt Maturities, Next Twelve Months, Fair Value | 24.9 |  |
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Amortized Cost Basis | 265.2 |  |
Available-for-sale Securities, Debt Maturities, Year Two Through Five, Fair Value | 261.1 |  |
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Amortized Cost Basis | 428.9 |  |
Available-for-sale Securities, Debt Maturities, Year Six Through Ten, Fair Value | 423.8 |  |
Available-for-sale Securities, Debt Maturities, after Ten Years, Amortized Cost Basis | 497.1 |  |
Available-for-sale Securities, Debt Maturities, after Ten Years, Fair Value | 477.0 |  |
Available For Sale Securities Debt Maturities Amortized Cost Excluding Single Maturity Date | 1,216.1 |  |
Available For Sale Securities Debt Maturities Fair Value Excluding Single Maturity Date | 1,186.8 |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 255.7 |  | $ 216.0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 8.7 |  | 15.7
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 287.8 |  | 190.7
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 32.4 |  | 22.6
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 543.5 |  | 406.7
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 41.1 |  | $ 38.3
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net, Available-for-sale Securities | 1.0 | $ 1.4 |
Gross Investment Income | 10.7 | 20.3 |
Gain (Loss) on Sale of Equity Investments | (0.1) | 1.8 |
Gain (Loss) on Sale of Derivatives | 3.1 | 1.9 |
Embedded Derivative, Gain (Loss) on Embedded Derivative, Net | (12.2) | (26.5) |
Gain (Loss) on Sale of Other Investments | (22.4) | (12.5) |
Net investment losses | $ (33.8) | (32.0) |
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Less than One Year | 198 |  | 146
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions, Greater than or Equal to One Year | 137 |  | 76
Available-for-sale, Securities in Unrealized Loss Positions, Qualitative Disclosure, Number of Positions | 335 |  | 222
Fixed Maturity Available For Sale Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Gross Investment Income | $ 10.2 | 15.5 |
Gain Loss On Sale Of Available For Sale Securities | (2.2) | 3.3 |
Corporate Debt Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 202.7 |  | $ 137.8
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 7.9 |  | 12.6
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 162.4 |  | 91.7
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 24.9 |  | 16.9
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 365.1 |  | 229.5
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 32.8 |  | 29.5
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net | 1.0 | 1.4 |
Mortgage Backed Securities, Other [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis | 331.8 |  |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value | 324.9 |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 44.3 |  | 73.3
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0.2 |  | 2.2
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 120.2 |  | 99.0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 7.1 |  | 5.7
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 164.5 |  | 172.3
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 7.3 |  | 7.9
Municipal Debt Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 6.8 |  | 1.0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0.4 |  | 0.0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0.0 |  | 0.0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0.0 |  | 0.0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 6.8 |  | 1.0
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 0.4 |  | 0.0
US Treasury and Government [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 1.0 |  | 0.2
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0.1 |  | 0.0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 0.0 |  | 0.0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0.0 |  | 0.0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 1.0 |  | 0.2
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 0.1 |  | 0.0
Preferred Stock [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value | 0.9 |  | 3.7
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss | 0.1 |  | 0.9
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value | 5.2 |  | 0.0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss | 0.4 |  | 0.0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value | 6.1 |  | 3.7
Available-for-sale Securities, Continuous Unrealized Loss Position, Accumulated Loss | 0.5 |  | 0.9
Structured Hybrids [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Amortized Cost Basis | 22.2 |  |
Available-for-sale Securities, Debt Maturities, without Single Maturity Date, Fair Value | 21.1 |  |
Equity Securities Available For Sale [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Gross Investment Income | 0.2 | 0.6 |
Asset based loan receivables [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Gross Investment Income | 0.3 | 2.0 |
Other Investments [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Gross Investment Income | 0.0 | $ 2.2 |
Funds Withheld Receivables [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 1,643.4 |  | 1,645.6
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 21.8 |  | 47.7
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (56.2) |  | (42.9)
Available-for-sale Securities, Debt Securities | 1,609.0 |  | 1,650.4
Total investments, Carrying Value | 1,609.0 |  | 1,650.4
Policy Loans [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 8.3 |  | 8.5
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 0.0 |  | 0.0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 0.0 |  | 0.0
Available-for-sale Securities, Debt Securities | 8.3 |  | 8.5
Total investments, Carrying Value | 8.3 |  | 8.5
Receivables, net [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 39.1 |  | 77.7
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 0.0 |  | 0.0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 0.0 |  | 0.0
Available-for-sale Securities, Debt Securities | 39.1 |  | 77.7
Total investments, Carrying Value | 39.1 |  | 77.7
Accrued Income Receivable [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 16.6 |  | 17.8
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 0.0 |  | 0.0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 0.0 |  | 0.0
Available-for-sale Securities, Debt Securities | 16.6 |  | 17.8
Total investments, Carrying Value | 16.6 |  | 17.8
Fixed Maturities Available For Sale [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 1,570.1 |  | 1,531.8
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 18.9 |  | 46.2
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (56.2) |  | (42.9)
Available-for-sale Securities, Debt Securities | 1,532.8 |  | 1,535.1
Total investments, Carrying Value | 1,532.8 |  | 1,535.1
Third party cedants [Member] | Fixed Maturities Available For Sale [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 670.0 |  | 632.5
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 8.6 |  | 26.4
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (15.1) |  | (4.6)
Available-for-sale Securities, Debt Securities | 663.5 |  | 654.3
Total investments, Carrying Value | 663.5 |  | 654.3
Third party cedants [Member] | Fixed Maturities Available For Sale [Member] | Corporate Debt Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 397.5 |  | 390.0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 5.9 |  | 18.8
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (8.8) |  | (2.7)
Available-for-sale Securities, Debt Securities | 394.6 |  | 406.1
Total investments, Carrying Value | 394.6 |  | 406.1
Third party cedants [Member] | Fixed Maturities Available For Sale [Member] | Mortgage Backed Securities, Other [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 133.9 |  | 118.7
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 1.7 |  | 1.9
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (1.8) |  | (1.7)
Available-for-sale Securities, Debt Securities | 133.8 |  | 118.9
Total investments, Carrying Value | 133.8 |  | 118.9
Third party cedants [Member] | Fixed Maturities Available For Sale [Member] | Municipal Debt Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 49.4 |  | 49.5
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 1.0 |  | 4.1
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (0.6) |  | 0.0
Available-for-sale Securities, Debt Securities | 49.8 |  | 53.6
Total investments, Carrying Value | 49.8 |  | 53.6
Third party cedants [Member] | Fixed Maturities Available For Sale [Member] | US Treasury and Government [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 82.5 |  | 67.7
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 0.0 |  | 1.3
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (3.9) |  | (0.2)
Available-for-sale Securities, Debt Securities | 78.6 |  | 68.8
Total investments, Carrying Value | 78.6 |  | 68.8
Third party cedants [Member] | Fixed Maturities Available For Sale [Member] | Agency Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 6.7 |  | 6.6
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 0.0 |  | 0.3
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 0.0 |  | 0.0
Available-for-sale Securities, Debt Securities | 6.7 |  | 6.9
Total investments, Carrying Value | 6.7 |  | 6.9
FGL [Member] | Derivative Financial Instruments, Assets [Member] | Call options [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 9.3 |  | 9.8
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 2.9 |  | 1.5
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | 0.0 |  | 0.0
Available-for-sale Securities, Debt Securities | 12.2 |  | 11.3
Total investments, Carrying Value | 12.2 |  | 11.3
FGL [Member] | Fixed Maturities Available For Sale [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 900.1 |  | 899.3
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 10.3 |  | 19.8
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (41.1) |  | (38.3)
Available-for-sale Securities, Debt Securities | 869.3 |  | 880.8
Total investments, Carrying Value | 869.3 |  | 880.8
FGL [Member] | Fixed Maturities Available For Sale [Member] | Corporate Debt Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 676.5 |  | 638.5
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 9.7 |  | 18.2
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (32.8) |  | (29.5)
Available-for-sale Securities, Debt Securities | 653.4 |  | 627.2
Total investments, Carrying Value | 653.4 |  | 627.2
FGL [Member] | Fixed Maturities Available For Sale [Member] | Mortgage Backed Securities, Other [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 197.9 |  | 238.8
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 0.5 |  | 0.6
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (7.3) |  | (7.9)
Available-for-sale Securities, Debt Securities | 191.1 |  | 231.5
Total investments, Carrying Value | 191.1 |  | 231.5
FGL [Member] | Fixed Maturities Available For Sale [Member] | Municipal Debt Securities [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 12.1 |  | 12.1
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 0.0 |  | 0.7
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (0.4) |  | 0.0
Available-for-sale Securities, Debt Securities | 11.7 |  | 12.8
Total investments, Carrying Value | 11.7 |  | 12.8
FGL [Member] | Fixed Maturities Available For Sale [Member] | US Treasury and Government [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 1.1 |  | 1.1
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 0.0 |  | 0.0
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (0.1) |  | 0.0
Available-for-sale Securities, Debt Securities | 1.0 |  | 1.1
Total investments, Carrying Value | 1.0 |  | 1.1
FGL [Member] | Fixed Maturities Available For Sale [Member] | Preferred Stock [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Available-for-sale Debt Securities, Amortized Cost Basis | 12.5 |  | 8.8
Available-for-sale Debt Securities, Accumulated Gross Unrealized Gain, before Tax | 0.1 |  | 0.3
Available-for-sale Debt Securities, Accumulated Gross Unrealized Loss, before Tax | (0.5) |  | (0.9)
Available-for-sale Securities, Debt Securities | 12.1 |  | 8.2
Total investments, Carrying Value | $ 12.1 |  | $ 8.2
HGI [Member] |  |  |
Schedule of Available-for-sale Securities [Line Items] |  |  |
Document Fiscal Year Focus | 2016 |  |

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