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Discontinued Operations (Details) (USD $)
In Millions, except Per Share data, unless otherwise specified |
3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 3 Months Ended | 9 Months Ended | 12 Months Ended | 9 Months Ended | |||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
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Sep. 30, 2012
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Sep. 30, 2011
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Sep. 30, 2012
|
Sep. 30, 2011
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Dec. 31, 2011
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Dec. 31, 2010
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Sep. 30, 2012
Fireside [Member]
|
Sep. 30, 2011
Fireside [Member]
|
Sep. 30, 2012
Fireside [Member]
|
Sep. 30, 2011
Fireside [Member]
|
Sep. 30, 2012
Unitrin Business Insurance [Member]
|
Sep. 30, 2011
Unitrin Business Insurance [Member]
|
Sep. 30, 2012
Unitrin Business Insurance [Member]
|
Sep. 30, 2011
Unitrin Business Insurance [Member]
|
Dec. 31, 2011
Unitrin Business Insurance [Member]
|
Dec. 31, 2011
Active Loan Portfolio [Member]
Fireside [Member]
|
Sep. 30, 2012
Inactive Loan Portfolio [Member]
Fireside [Member]
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| Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] | |||||||||||||||||
| Interest, Loan Fees and Earned Discounts | $ 0 | $ 3.8 | $ 0 | $ 31.8 | |||||||||||||
| Other Income | 0 | 1.1 | 0 | 1.4 | |||||||||||||
| Net Gain on Sale of Loan Portfolios | 0.5 | 4.5 | 12.9 | 4.5 | 0.5 | 4.5 | 12.9 | 4.5 | 4.5 | 12.9 | |||||||
| Net Investment Income | 0 | 0 | 0 | 0.5 | |||||||||||||
| Net Realized Gains on Sales of Investments | 0 | 0 | 0 | 0.4 | |||||||||||||
| Total Revenues Included in Discontinued Operations | 0.5 | 9.4 | 12.9 | 38.6 | |||||||||||||
| Income (Loss) from Discontinued Operations before Income Taxes: | |||||||||||||||||
| Results of Operations / Change in Estimate of Retained Liabilities Arising from Discontinued Operations | 0 | (2.0) | (0.2) | 17.8 | (0.6) | (1.9) | 0.5 | (3.0) | |||||||||
| Net Gain on Sale of Loan Portfolios | 0.5 | 4.5 | 12.9 | 4.5 | 0.5 | 4.5 | 12.9 | 4.5 | 4.5 | 12.9 | |||||||
| Income (Loss) from Discontinued Operations before Income Taxes | (0.1) | 0.6 | 13.2 | 19.3 | |||||||||||||
| Income Tax Benefit (Expense) | 0.1 | 0.3 | (5.2) | (5.8) | |||||||||||||
| Income from Discontinued Operations | 0 | 0.9 | 8.0 | 13.5 | |||||||||||||
| Income from Discontinued Operations Per Unrestricted Share: | |||||||||||||||||
| Basic (in dollars per share) | $ 0.00 | $ 0.02 | $ 0.14 | $ 0.22 | |||||||||||||
| Diluted (in dollars per share) | $ 0.00 | $ 0.02 | $ 0.14 | $ 0.22 | |||||||||||||
| Notional Amount of Sales of Loans Held-for-sale | 283 | ||||||||||||||||
| Disposal Group, Including Discontinued Operation, Transaction, Shutdown, and Other Costs | 13.3 | ||||||||||||||||
| Disposal Group, Including Discontinued Operation, Accrued Transaction Costs | 4.7 | ||||||||||||||||
| Discontinued Operations, Property and Casualty Insurance Reserves | $ 981.8 | $ 1,063.6 | $ 981.8 | $ 1,063.6 | $ 1,029.1 | $ 1,118.7 | $ 110.0 | $ 110.0 | $ 125.6 | ||||||||