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Deferred Policy Acquisition Costs | 9 Months Ended
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Sep. 30, 2017
Insurance [Abstract] |
Deferred Policy Acquisition Costs | Deferred Policy Acquisition Costs The following table represents a reconciliation of beginning and ending deferred policy acquisition costs for the three and nine months ended September 30, 2017 and 2016:
|  | Three Months Ended September 30, |  | Nine Months Ended September 30,
|  | 2017 |  | 2016 |  | 2017 |  | 2016
| ($ in millions) |  | ($ in millions)
Balance at the beginning of the period | $ | 364.6 |  |  | $ | 409.1 |  |  | $ | 358.4 |  |  | $ | 361.1 |
| Acquisition costs deferred | 94.9 |  |  | 110.0 |  |  | 311.1 |  |  | 414.9 |
| Amortization of deferred policy acquisition costs | (105.4 | ) |  | (130.9 | ) |  | (315.4 | ) |  | (387.8 | )
Balance at the end of the period | $ | 354.1 |  |  | $ | 388.2 |  |  | $ | 354.1 |  |  | $ | 388.2 |

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- Definition The entire disclosure for deferred policy acquisition costs. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 30 -URI http://asc.fasb.org/subtopic&trid=4737841 + Details
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- References No definition available. + Details
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