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Acquisition of Business - Purchase Price Allocation (Details) - USD ($) $ in Millions | Sep. 30, 2019 | Jun. 30, 2019 | Dec. 31, 2018 | Jul. 02, 2018
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Business Acquisition [Line Items] |  |  |  |
Goodwill | $ 1,114.0 |  | $ 1,112.4 |
Infinity Property and Casualty Corporation |  |  |  |
Business Acquisition [Line Items] |  |  |  |
Investments |  |  |  | $ 1,569.3
Short Term Investments |  |  |  | 98.8
Cash |  |  |  | 4.0
Receivables from Policyholders |  |  |  | 583.4
Other Receivables |  |  |  | 31.7
Value of Intangible Assets Acquired (Reported in Other Assets) |  |  |  | 262.7
Current Income Tax Assets |  |  |  | 1.0
Goodwill |  | $ 2.5 |  | 791.0
Other Assets |  |  |  | 102.1
Property and Casualty Insurance Reserves |  |  |  | (717.2)
Unearned Premiums |  |  |  | (715.6)
Debt |  |  |  | (282.1)
Deferred Income Tax Liabilities |  |  |  | (10.8)
Accrued Expenses and Other Liabilities |  |  |  | (169.6)
Total Purchase Price |  |  |  | $ 1,548.7

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- Definition Amount due from customers or clients for goods or services, including trade receivables, that have been delivered or sold in the normal course of business, and amounts due from others, including related parties expected to be converted to cash, sold or exchanged within one year or the normal operating cycle, if longer, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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- Definition Amount of intangible assets, excluding goodwill, acquired at the acquisition date. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 805 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=116869197&loc=d3e4845-128472 + Details
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