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v3.10.0.1

Fair Value Measurements - Level 3 Inputs Reconciliation (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Dec. 31, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Balance at Beginning of Period | $ 519.4 |  | $ 551.3 | $ 581.7 | $ 556.6 | $ 581.7
Included in Condensed Consolidated Statement of Operations | 1.0 |  | 5.1 |  | 3.2 | 0.6
Included in Other Comprehensive Income (Loss) | 0.2 |  | (1.3) |  | (1.9) | (3.8)
Purchases | 56.6 |  | 60.9 |  | 131.3 | 101.0
Settlements | (68.3) |  | (37.1) |  | (100.4) | (59.9)
Sales | (27.5) |  | (18.3) |  | (40.9) | (48.2)
Transfers into Level 3 | 0.0 |  | 0.0 | 0.0 | 0.3 | 0.0
Transfers out of Level 3 | 0.0 |  | 14.0 | 24.8 | (66.8) | 24.8
Balance at End of Period | 481.4 | $ 556.6 | 546.6 | 551.3 | 481.4 | 546.6
Fair Value, Level 2 to level 3 Transfers, Amount |  |  |  |  | (0.3) |
Fair Value, Level 3 to level 1 Transfers, Amount |  | (3.5) |  | (3.5) |  |
Fair Value, Level 3 to level 2 Transfers, Amount |  | (10.5) |  | (21.3) | (5.0) | 21.3
Bonds and Notes |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Balance at Beginning of Period | 391.3 |  | 391.2 | 403.2 | 401.5 | 403.2
Included in Condensed Consolidated Statement of Operations | (0.4) |  | (0.6) |  | 1.4 | (3.9)
Included in Other Comprehensive Income (Loss) | 1.7 |  | 1.4 |  | 0.1 | 2.8
Purchases | 67.9 |  | 50.2 |  | 93.7 | 80.0
Settlements | (47.5) |  | (29.3) |  | (65.6) | (44.3)
Sales | (27.5) |  | (6.3) |  | (40.9) | (28.3)
Transfers into Level 3 | 0.0 |  | 0.0 |  | 0.3 | 0.0
Transfers out of Level 3 | 0.0 |  | 10.5 |  | 5.0 | 13.4
Balance at End of Period | 385.5 | 401.5 | 396.1 | 391.2 | 385.5 | 396.1
States and Political Subdivisions |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Balance at Beginning of Period |  |  | 2.6 | 3.8 |  | 3.8
Included in Condensed Consolidated Statement of Operations |  |  | 0.0 |  |  | (1.2)
Included in Other Comprehensive Income (Loss) |  |  | 0.0 |  |  | 0.0
Purchases |  |  | 0.0 |  |  | 0.0
Settlements |  |  | (2.6) |  |  | (2.6)
Sales |  |  | 0.0 |  |  | 0.0
Transfers into Level 3 |  |  | 0.0 |  |  | 0.0
Transfers out of Level 3 |  |  | 0.0 |  |  | 0.0
Balance at End of Period |  |  | 0.0 | 2.6 |  | 0.0
Redeemable Preferred Stocks |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Balance at Beginning of Period |  |  | 0.2 | 0.6 | 0.1 | 0.6
Included in Condensed Consolidated Statement of Operations |  |  | 0.1 |  | (0.1) | 0.1
Included in Other Comprehensive Income (Loss) |  |  | (0.2) |  | 0.0 | (0.1)
Purchases |  |  | 0.0 |  | 0.0 | 0.0
Settlements |  |  | 0.0 |  | 0.0 | 0.5
Sales |  |  | 0.0 |  | 0.0 | 0.0
Transfers into Level 3 |  |  | 0.0 |  | 0.0 | 0.0
Transfers out of Level 3 |  |  | 0.0 |  | 0.0 | 0.0
Balance at End of Period | 0.0 | 0.1 | 0.1 | 0.2 | 0.0 | 0.1
Collateralized Loan Obligations |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Balance at Beginning of Period | 128.1 |  | 95.8 | 103.5 | 93.2 | 103.5
Included in Condensed Consolidated Statement of Operations | 1.4 |  | 0.7 |  | 1.9 | 0.9
Included in Other Comprehensive Income (Loss) | (1.5) |  | (0.2) |  | (2.0) | 1.7
Purchases | (11.3) |  | 7.2 |  | 37.6 | 16.4
Settlements | (20.8) |  | (5.2) |  | (34.8) | (12.5)
Sales | 0.0 |  | 2.9 |  | 0.0 | 6.7
Transfers into Level 3 | 0.0 |  | 0.0 |  | 0.0 | 0.0
Transfers out of Level 3 | 0.0 |  | 0.0 |  | 0.0 | (7.9)
Balance at End of Period | $ 95.9 | $ 93.2 | $ 95.4 | $ 95.8 | 95.9 | $ 95.4
Equity Securities [Member] |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |  |  |  |
Transfers out of Level 3 |  |  |  |  | $ (61.8) |

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