Kemper (KMPR) 10-Q 30 Oct 17 2017 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information Document - shares	9 Months Ended
	Sep. 30, 2017	Oct. 27, 2017
Document and Entity Information [Abstract]
Entity Registrant Name	KEMPER Corporation
Trading Symbol	KMPR
Entity Central Index Key	860,748
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2017
Document Fiscal Year Focus	2,017
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Common Stock, Shares Outstanding at July 31, 2017		51,451,359

Condensed Consolidated Statemen

Condensed Consolidated Statements of Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Revenues:
Earned Premiums	$ 598.2	$ 558.9	$ 1,744.1	$ 1,658.6
Net Investment Income	85.9	77.7	244.6	218.4
Other Income	1	0.8	2.9	2.2
Net Realized Gains on Sales of Investments	8.1	11.6	45	24
Other-than-temporary Impairment Losses:
Total Other-than-temporary Impairment Losses	(2.9)	(8.3)	(10.7)	(24.3)
Portion of Losses Recognized in Other Comprehensive Income	0	0	0.2	0.3
Net Impairment Losses Recognized in Earnings	(2.9)	(8.3)	(10.5)	(24)
Total Revenues	690.3	640.7	2,026.1	1,879.2
Expenses:
Policyholders’ Benefits and Incurred Losses and Loss Adjustment Expenses	440.1	490.2	1,364.9	1,362.5
Insurance Expenses	163.7	161.7	485.2	488.8
Interest and Other Expenses	18.2	22	59.1	65
Total Expenses	622	673.9	1,909.2	1,916.3
Income (Loss) from Continuing Operations before Income Taxes	68.3	(33.2)	116.9	(37.1)
Income Tax Benefit (Expense)	(20.5)	14.9	(32.9)	20.7
Income (Loss) from Continuing Operations	47.8	(18.3)	84	(16.4)
Income (Loss) from Discontinued Operations	(0.1)	2	0	2
Net Income (Loss)	$ 47.7	$ (16.3)	$ 84	$ (14.4)
Income (Loss) from Continuing Operations Per Unrestricted Share:
Basic (in dollars per share)	$ 0.92	$ (0.36)	$ 1.63	$ (0.31)
Diluted (in dollars per share)	0.92	(0.36)	1.62	(0.31)
Net Income (Loss) Per Unrestricted Share:
Basic (in dollars per share)	0.92	(0.32)	1.63	(0.27)
Diluted (in dollars per share)	0.92	(0.32)	1.62	(0.27)
Dividends Paid to Shareholders Per Share (in dollars per share)	$ 0.24	$ 0.24	$ 0.72	$ 0.72

Condensed Consolidated Stateme3

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ 47.7	$ (16.3)	$ 84	$ (14.4)
Other Comprehensive Income (Loss) Before Income Taxes:
Unrealized Holding Gains (Losses)	15.6	(8.3)	82.8	217.2
Foreign Currency Translation Adjustments	0.1	0	0.9	0
Decrease (Increase) in Net Unrecognized Postretirement Benefit Costs	(0.1)	0.4	(0.4)	(13.8)
Loss on Cash Flow Hedges	(0.1)	0	(6.6)	0
Other Comprehensive Income (Loss) Before Income Taxes	15.5	(7.9)	76.7	203.4
Other Comprehensive Income Tax Benefit (Expense)	(5.7)	2.9	(27.3)	(71.6)
Other Comprehensive Income (Loss)	9.8	(5)	49.4	131.8
Total Comprehensive Income (Loss)	$ 57.5	$ (21.3)	$ 133.4	$ 117.4

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Investments:
Fixed Maturities at Fair Value (Amortized Cost: 2017 - $4,876.7; 2016 - $4,846.8)	$ 5,242.8	$ 5,124.9
Equity Securities at Fair Value (Cost: 2017 - $469.1; 2016 - $434.4)	512.1	481.7
Equity Method Limited Liability Investments at Cost Plus Cumulative Undistributed Earnings	160.1	175.9
Fair Value Option Investments	77.1	111.4
Short-term Investments at Cost which Approximates Fair Value	239	273.7
Other Investments	420	439.9
Total Investments	6,651.1	6,607.5
Cash	137.6	115.7
Receivables from Policyholders	374.8	336.5
Other Receivables	182.4	198.6
Deferred Policy Acquisition Costs	361.7	332
Goodwill	323	323
Current Income Tax Assets	0.9	15.5
Deferred Income Tax Assets	0	25.8
Other Assets	269.5	255.9
Total Assets	8,301	8,210.5
Insurance Reserves:
Life and Health	3,509.8	3,475.3
Property and Casualty	968.5	931.4
Total Insurance Reserves	4,478.3	4,406.7
Unearned Premiums	672	618.7
Deferred Income Tax Liabilities, Net	11.9	0
Liabilities for Unrecognized Tax Benefits	6.8	5.1
Long-term Debt, Current and Non-current, at Amortized Cost (Fair Value: 2017 - $616.1; 2016 - $770.9)	592.2	751.6
Accrued Expenses and Other Liabilities	457.4	453.2
Total Liabilities	6,218.6	6,235.3
Shareholders' Equity:
Common Stock, $0.10 Par Value, 100 Million Shares Authorized; 51,448,024 Shares Issued and Outstanding at September 30, 2017 and 51,270,940 Shares Issued and Outstanding at December 31, 2016	5.1	5.1
Paid-in Capital	672.1	660.3
Retained Earnings	1,218.8	1,172.8
Accumulated Other Comprehensive Income	186.4	137
Total Shareholders’ Equity	2,082.4	1,975.2
Total Liabilities and Shareholders’ Equity	$ 8,301	$ 8,210.5

Condensed Consolidated Balance5

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Amortized Cost of Fixed Maturity Securities	$ 4,876.7	$ 4,846.8
Equity Securities at Cost	469.1	434.4
Long-term Debt, Fair Value	$ 616.1	$ 770.9
Common Stock, Par Value (usd per share)	$ 0.1	$ 0.1
Common Stock, Shares Authorized	100,000,000	100,000,000
Common Stock, Shares Issued	51,448,024	51,270,940
Common Stock, Shares, Outstanding	51,448,024	51,270,940

Condensed Consolidated Stateme6

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Operating Activities:
Net Income (Loss)	$ 84	$ (14.4)
Adjustments to Reconcile Net Income to Net Cash Provided by Operating Activities:
Amortization of Intangible Assets Acquired	3.9	4.5
Equity in Earnings of Equity Method Limited Liability Investments	(21.9)	(3.3)
Distribution of Accumulated Earnings of Equity Method Limited Liability Investments	15.9	10.3
Decrease (Increase) in Value of Fair Value Option Investments Reported in Investment Income	(0.9)	3.9
Amortization of Investment Securities and Depreciation of Investment Real Estate	12.8	11.7
Net Realized Gains on Sales of Investments	(45)	(24)
Net Impairment Losses Recognized in Earnings	10.5	24
Depreciation of Property and Equipment	9.8	10.5
Increase in Receivables	(27.2)	(23.8)
Increase in Deferred Policy Acquisition Costs	(29.6)	(11.8)
Increase in Insurance Reserves	71.4	177.6
Increase in Unearned Premiums	53.3	23.9
Change in Income Taxes	27.4	(30.2)
Change in Accrued Expenses and Other Liabilities	(1.5)	2
Other, Net	1.6	9.6
Net Cash Provided by Operating Activities	164.5	170.5
Investing Activities:
Sales, Paydowns and Maturities of Fixed Maturities	367.7	422.4
Purchases of Fixed Maturities	(401.8)	(539.8)
Sales of Equity Securities	230.3	107.2
Purchases of Equity Securities	(233.5)	(64.8)
Return of Investment of Equity Method Limited Liability Investments	36.3	22.6
Acquisitions of Equity Method Limited Liability Investments	(14.5)	(20.2)
Sales of Fair Value Option Investments	42.2	50.5
Purchases of Fair Value Option Investments	(7)	(16)
Decrease (Increase) in Short-term Investments	40.4	(68.5)
Improvements of Investment Real Estate	(1.3)	(1.8)
Sales of Investment Real Estate	26.2	7.5
Increase in Other Investments	(1.3)	(3.4)
Purchases of Corporate-owned Life Insurance	0	(7.5)
Acquisition and Development of Software	(28.8)	(8.8)
Other, Net	(4.4)	(2)
Net Cash Provided (Used) by Investing Activities	50.5	(122.6)
Financing Activities:
Net Proceeds from Issuance of Long-term Debt	200.2	0
Repayment of Long-term Debt	(360)	0
Common Stock Repurchases	0	(3.8)
Dividends and Dividend Equivalents Paid	(37.1)	(36.9)
Cash Exercise of Stock Options	3.7	1.2
Other, Net	0.1	1
Net Cash Used by Financing Activities	(193.1)	(38.5)
Increase in Cash	21.9	9.4
Cash, Beginning of Year	115.7	161.7
Cash, End of Period	$ 137.6	$ 171.1

Basis of Presentation

Basis of Presentation	9 Months Ended
	Sep. 30, 2017
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	Note 1 - Basis of Presentation The Condensed Consolidated Financial Statements included herein have been prepared pursuant to the rules and regulations of the SEC and include the accounts of Kemper Corporation (“Kemper”) and its subsidiaries (individually and collectively referred to herein as the “Company”) and are unaudited. All significant intercompany accounts and transactions have been eliminated. Certain financial information that is normally included in annual financial statements, including certain financial statement footnote disclosures, prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) is not required by the rules and regulations of the SEC for interim financial reporting and has been condensed or omitted. In the opinion of the Company’s management, the Condensed Consolidated Financial Statements include all adjustments necessary for a fair presentation. The preparation of interim financial statements relies heavily on estimates. This factor and other factors, such as the seasonal nature of some portions of the insurance business, as well as market conditions, call for caution in drawing specific conclusions from interim results. The accompanying Condensed Consolidated Financial Statements should be read in conjunction with the Company’s Consolidated Financial Statements and related notes included in the 2016 Annual Report. Adoption of New Accounting Guidance Guidance Adopted in 2017 The Company adopted Accounting Standard Update (“ASU”) 2016-09, Compensation—Stock Compensation (Topic 718): Improvements to Employee Share-Based Payment Accounting, in the first quarter of 2017. ASU 2016-09 simplifies several aspects of the accounting for share-based payment transactions, including the accounting for income taxes, forfeitures and statutory tax withholding requirements, as well as classification in the statement of cash flows. ASU 2016-09 impacts the timing of when excess tax benefits are recognized by eliminating the delay in the recognition of a tax benefit until the tax benefit is realized through a reduction to income taxes payable. The Company applied the modified retrospective transition method and recognized an increase to retained earnings of $0.5 million as of January 1, 2017 to recognize excess tax benefits that had been previously delayed. On a prospective basis, all excess tax benefits and tax deficiencies are recognized as income tax expense or benefit in the Company’s Condensed Consolidated Statements of Operations. Further, the Company will continue to estimate the number of awards that are expected to vest. The Company early adopted ASU 2017-08, Receivables—Nonrefundable Fees and Other Costs (Subtopic 310-20): Premium Amortization on Purchased Callable Debt Securities, in the first quarter of 2017. ASU 2017-08 shortens the amortization period for certain purchased callable debt securities held at a premium to the earliest call date. No change is required for securities held at a discount, which will continue to be amortized to maturity. The Company holds a large number of debt securities for which prepayments are probable and the timing and amount of prepayments can be reasonably estimated. As allowed under GAAP in effect prior to the issuance of ASU 2017-08, the Company already considered such estimates of future principal prepayments in the calculation of the constant effective yield necessary in applying the interest method. Accordingly, adoption of ASU 2017-08 did not have a material impact on the Company’s financial statements. Guidance Not Yet Adopted In May 2014, the Financial Accounting Standards Board (“FASB”) issued ASU 2014-09, Revenue from Contracts with Customers (Topic 606) , which revises the criteria for recognizing revenue. ASU 2014-09 requires an entity to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those services. The guidance is effective for reporting periods beginning after December 15, 2017 and is to be applied retrospectively. The guidance specifically excludes insurance contracts, lease contracts and investments from its scope. Accordingly, the Company does not expect adoption to have a material impact on net income or its financial position. In January 2016, the FASB issued ASU 2016-01, Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities. ASU 2016-01 addresses certain aspects of recognition, measurement, presentation and disclosure of financial instruments. Most significantly, ASU 2016-01 requires companies to measure equity investments (except those accounted for under the equity method of accounting or those that result in consolidation of the investee) at fair value with changes in fair value recognized in net income. However, an entity may choose to measure equity investments that do not have readily-determinable fair values at cost minus impairment, if any, plus or minus Note 1 - Basis of Presentation (continued) changes resulting from observable price changes in orderly transactions for the identical or a similar investment of the same issuer. ASU 2016-01 also simplifies the impairment assessment of equity investments without readily-determinable fair values by requiring a qualitative assessment to identify impairment. When a qualitative assessment indicates that impairment exists, an entity is required to measure the investment at fair value. ASU 2016-01 is effective for fiscal years beginning after December 15, 2017, including interim periods within those fiscal years. The Company currently records its Investments in Equity Securities at fair value with net unrealized appreciation or depreciation reported in Accumulated Other Comprehensive Income (“AOCI”) in Shareholders’ Equity. The Company’s Investments in Equity Securities include securities with readily-determinable fair values and securities without readily-determinable fair values. Until the Company adopts ASU 2016-01 and makes its elections for Investments in Equity Securities that do not have readily-determinable fair values, it cannot determine the impact of the adoption on its consolidated balance sheet. Subsequent to adoption, ASU 2016-01 is expected to cause increased volatility in the Company’s Consolidated Statements of Operations. In February 2016, the FASB issued ASU 2016-02, Leases (Topic 842 ), by amending the Accounting Standards Codification and creating a new topic on accounting for leases. ASU 2016-02 introduces a lessee model that requires most leases to be reported on the balance sheet of a lessee. ASU 2016-02 also aligns many of the underlying principles of the new lessor model with those in ASC Topic 606, Revenue from Contracts with Customers, the FASB’s new revenue recognition standard (e.g., those related to evaluating when profit can be recognized). Furthermore, ASU 2016-02 addresses other concerns related to the current leases model. For example, ASU 2016-02 eliminates the requirement in current GAAP for an entity to use bright-line tests in determining lease classification. ASU 2016-02 also requires lessors to increase the transparency of their exposure to changes in value of their residual assets and how they manage that exposure. ASU 2016-02 is effective for fiscal years beginning after December 15, 2018 and interim periods within those years with early adoption permitted. The Company is currently evaluating the impact of this guidance on its financial statements. In June 2016, the FASB issued ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments. ASU 2016-13 replaces the incurred loss impairment methodology in current GAAP with a methodology that utilizes expected credit losses to provide for an allowance for credit losses for financial instruments and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The amendments in this ASU require a financial asset (or a group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The income statement includes the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period. Credit losses on available-for-sale debt securities are measured in a manner similar to current GAAP, although the ASU requires that they be presented as an allowance rather than as a write-down. In situations where the estimate of credit loss on an available-for-sale debt security declines, entities will be able to record the reversal to income in the current period, which GAAP currently prohibits. ASU 2016-13 is effective for annual periods beginning after December 15, 2019, and interim periods within those annual periods with early adoption permitted for fiscal years beginning after December 31, 2018 and interim periods within such year. The Company is currently evaluating the impact of this guidance on its financial statements. In August 2017, the FASB issued ASU 2017-12, Derivatives and Hedging (Topic 815): Targeted Improvements to Derivatives and Hedging Activities. ASU 2017-12 aligns an entity’s risk management activities and financial reporting for hedging relationships through changes to both the designation and measurement guidance for qualifying hedging relationships and the presentation of hedge results. The amendments in ASU 2017-12 expand and refine hedge accounting for both nonfinancial and financial risk components and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. Furthermore, the amendments make certain targeted improvements to simplify the application of hedge accounting guidance and ease the administration of hedge documentation requirements and assessing hedge effectiveness. ASU 2017-12 is effective for annual periods beginning after December 15, 2018 and interim periods within those annual periods with early adoption permitted. The Company does not expect adoption to have a material impact on its financial statements. Note 1 - Basis of Presentation (continued) The Company has adopted all other recently issued accounting pronouncements with effective dates prior to October 1, 2017. There were no adoptions of such accounting pronouncements in 2016 or during the nine months ended September 30, 2017 that had a material impact on the Company’s Condensed Consolidated Financial Statements. With the possible exceptions of Financial Instruments—Overall (Subtopic 825-10): Recognition and Measurement of Financial Assets and Financial Liabilities , ASU 2016-02, Leases (Topic 842 ) and ASU 2016-13, Financial Instruments—Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments, the Company does not expect the adoption of all other recently issued accounting pronouncements with effective dates after September 30, 2017 to have a material impact on the Company’s financial statements and/or disclosures.

Investments

Investments	9 Months Ended
	Sep. 30, 2017
Investments, Debt and Equity Securities [Abstract]
Investments	Note 2 - Investments The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at September 30, 2017 were: Amortized Cost Gross Unrealized Fair Value (Dollars in Millions) Gains Losses U.S. Government and Government Agencies and Authorities $ 342.8 $ 21.2 $ (4.9 ) $ 359.1 States and Political Subdivisions 1,615.0 110.8 (2.8 ) 1,723.0 Foreign Governments 3.1 0.2 — 3.3 Corporate Securities: Bonds and Notes 2,796.9 247.2 (11.0 ) 3,033.1 Redeemable Preferred Stocks 0.1 — — 0.1 Collateralized Loan Obligations 118.4 4.7 — 123.1 Other Mortgage- and Asset-backed 0.4 0.7 — 1.1 Investments in Fixed Maturities $ 4,876.7 $ 384.8 $ (18.7 ) $ 5,242.8 The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at December 31, 2016 were: Amortized Cost Gross Unrealized Fair Value (Dollars in Millions) Gains Losses U.S. Government and Government Agencies and Authorities $ 321.2 $ 22.3 $ (7.2 ) $ 336.3 States and Political Subdivisions 1,640.6 88.4 (14.1 ) 1,714.9 Foreign Governments 3.5 — (0.1 ) 3.4 Corporate Securities: Bonds and Notes 2,758.9 209.9 (24.0 ) 2,944.8 Redeemable Preferred Stocks 0.5 0.1 — 0.6 Collateralized Loan Obligations 121.2 2.7 (1.1 ) 122.8 Other Mortgage- and Asset-backed 0.9 1.2 — 2.1 Investments in Fixed Maturities $ 4,846.8 $ 324.6 $ (46.5 ) $ 5,124.9 There were no unsettled sales of Investments in Fixed Maturities at September 30, 2017 . Other Receivables included unsettled sales of Investments in Fixed Maturities of $2.7 million at December 31, 2016 . Accrued Expenses and Other Liabilities included unsettled purchases of Investments in Fixed Maturities of $4.7 million and $0.1 million at September 30, 2017 and December 31, 2016 , respectively. Note 2 - Investments (continued) The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at September 30, 2017 by contractual maturity were: (Dollars in Millions) Amortized Cost Fair Value Due in One Year or Less $ 188.3 $ 190.8 Due after One Year to Five Years 785.9 814.3 Due after Five Years to Ten Years 1,632.7 1,710.9 Due after Ten Years 1,988.1 2,234.3 Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date 281.7 292.5 Investments in Fixed Maturities $ 4,876.7 $ 5,242.8 The expected maturities of the Company’s Investments in Fixed Maturities may differ from the contractual maturities because issuers may have the right to call or prepay obligations with or without call or prepayment penalties. Investments in Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date at September 30, 2017 consisted of securities issued by the Government National Mortgage Association with a fair value of $152.1 million , securities issued by the Federal National Mortgage Association with a fair value of $11.2 million , securities issued by the Federal Home Loan Mortgage Corporation with a fair value of $4.1 million and securities of other non-governmental issuers with a fair value of $125.1 million . Gross unrealized gains and gross unrealized losses on the Company’s Investments in Equity Securities at September 30, 2017 were: Gross Unrealized (Dollars in Millions) Cost Gains Losses Fair Value Preferred Stocks: Finance, Insurance and Real Estate $ 53.6 $ 5.0 $ — $ 58.6 Other Industries 18.4 6.2 — 24.6 Common Stocks: Finance, Insurance and Real Estate 6.7 1.3 (0.8 ) 7.2 Other Industries 8.9 5.1 (0.2 ) 13.8 Other Equity Interests: Exchange Traded Funds 196.7 8.3 — 205.0 Limited Liability Companies and Limited Partnerships 184.8 23.6 (5.5 ) 202.9 Investments in Equity Securities $ 469.1 $ 49.5 $ (6.5 ) $ 512.1 Gross unrealized gains and gross unrealized losses on the Company’s Investments in Equity Securities at December 31, 2016 were: Gross Unrealized (Dollars in Millions) Cost Gains Losses Fair Value Preferred Stocks: Finance, Insurance and Real Estate $ 58.1 $ 2.3 $ (0.8 ) $ 59.6 Other Industries 18.5 4.9 (0.5 ) 22.9 Common Stocks: Finance, Insurance and Real Estate 31.2 2.3 — 33.5 Other Industries 7.2 4.6 (0.1 ) 11.7 Other Equity Interests: Exchange Traded Funds 136.1 9.6 (1.3 ) 144.4 Limited Liability Companies and Limited Partnerships 183.3 29.2 (2.9 ) 209.6 Investments in Equity Securities $ 434.4 $ 52.9 $ (5.6 ) $ 481.7 Note 2 - Investments (continued) There were no unsettled sales of Investments in Equity Securities at September 30, 2017 . Other Receivables included unsettled sales of Investments in Equity Securities of $0.2 million at December 31, 2016 . There were no unsettled purchases of Investments in Equity Securities at either September 30, 2017 or December 31, 2016 . An aging of unrealized losses on the Company’s Investments in Fixed Maturities and Equity Securities at September 30, 2017 is presented below. Less Than 12 Months 12 Months or Longer Total (Dollars in Millions) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 67.4 $ (2.1 ) $ 41.2 $ (2.8 ) $ 108.6 $ (4.9 ) States and Political Subdivisions 169.3 (2.1 ) 28.9 (0.7 ) 198.2 (2.8 ) Corporate Securities: Bonds and Notes 292.7 (6.7 ) 96.2 (4.3 ) 388.9 (11.0 ) Collateralized Loan Obligations 2.0 — 2.4 — 4.4 — Total Fixed Maturities 531.4 (10.9 ) 168.7 (7.8 ) 700.1 (18.7 ) Equity Securities: Preferred Stocks: Finance, Insurance and Real Estate — — 0.2 — 0.2 — Other Industries 0.1 — 0.2 — 0.3 — Common Stocks: Finance, Insurance and Real Estate 2.2 (0.8 ) — — 2.2 (0.8 ) Other Industries 0.2 (0.2 ) 0.5 — 0.7 (0.2 ) Other Equity Interests: Limited Liability Companies and Limited Partnerships 46.3 (1.9 ) 32.1 (3.6 ) 78.4 (5.5 ) Total Equity Securities 48.8 (2.9 ) 33.0 (3.6 ) 81.8 (6.5 ) Total $ 580.2 $ (13.8 ) $ 201.7 $ (11.4 ) $ 781.9 $ (25.2 ) The Company regularly reviews its investment portfolio for factors that may indicate that a decline in fair value of an investment is other than temporary. The portions of the declines in the fair values of investments that are determined to be other than temporary are reported as losses in the Condensed Consolidated Statements of Operations in the periods when such determinations are made. Note 2 - Investments (continued) Unrealized losses on fixed maturities, which the Company has determined to be temporary at September 30, 2017 , were $18.7 million , of which $7.8 million was related to fixed maturities that were in an unrealized loss position for 12 months or longer. There were no unrealized losses at September 30, 2017 related to securities for which the Company has recognized credit losses in earnings in the preceding table under the heading “Less Than 12 Months.” There were no unrealized losses at September 30, 2017 related to securities for which the Company has recognized credit losses in earnings in the preceding table under the heading “12 Months or Longer.” Investment-grade fixed maturity investments comprised $12.0 million and below-investment-grade fixed maturity investments comprised $6.7 million of the unrealized losses on investments in fixed maturities at September 30, 2017 . For below-investment-grade fixed maturity investments in an unrealized loss position, the unrealized loss amount, on average, was approximately 4% of the amortized cost basis of the investment. At September 30, 2017 , the Company did not have the intent to sell these investments, and it was not more likely than not that the Company would be required to sell these investments before it recovered the amortized cost of such investments, which may be at maturity. Based on the Company’s evaluation at September 30, 2017 of the prospects of the issuers, including, but not limited to, the credit ratings of the issuers of the investments in the fixed maturities, and the Company’s intention to not sell and its determination that it would not be required to sell before it recovered the amortized cost of such investments, the Company concluded that the declines in the fair values of the Company’s investments in fixed maturities presented in the preceding table were temporary at the evaluation date. With respect to Investments in Equity Securities, the Company concluded that the unrealized losses on its investments in preferred and common stocks at September 30, 2017 were temporary based on various factors, including the relative short length and magnitude of the losses and overall market volatility. The Company’s investments in other equity interests include investments in limited liability companies and limited partnerships that primarily invest in mezzanine debt, distressed debt and secondary transactions. By the nature of their underlying investments, the Company believes that some of its investments in the limited liability companies and limited partnerships exhibit debt-like characteristics which, among other factors, the Company also considers when evaluating these investments for impairment. Based on evaluations of the factors in the preceding paragraph, the Company concluded that the declines in the fair values of the Company’s investments in equity securities presented in the preceding table were temporary at September 30, 2017 . Note 2 - Investments (continued) An aging of unrealized losses on the Company’s Investments in Fixed Maturities and Equity Securities at December 31, 2016 is presented below. Less Than 12 Months 12 Months or Longer Total (Dollars in Millions) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 117.7 $ (7.2 ) $ 1.1 $ — $ 118.8 $ (7.2 ) States and Political Subdivisions 432.7 (14.1 ) 0.3 — 433.0 (14.1 ) Foreign Governments 2.1 (0.1 ) — — 2.1 (0.1 ) Corporate Securities: Bonds and Notes 663.3 (16.6 ) 107.3 (7.4 ) 770.6 (24.0 ) Collateralized Loan Obligations 19.9 (0.7 ) 21.4 (0.4 ) 41.3 (1.1 ) Total Fixed Maturities 1,235.7 (38.7 ) 130.1 (7.8 ) 1,365.8 (46.5 ) Equity Securities: Preferred Stocks: Finance, Insurance and Real Estate 15.6 (0.5 ) 7.3 (0.3 ) 22.9 (0.8 ) Other Industries 5.3 (0.5 ) — — 5.3 (0.5 ) Common Stocks: Finance, Insurance and Real Estate 2.8 — — — 2.8 — Other Industries 0.6 (0.1 ) 0.5 — 1.1 (0.1 ) Other Equity Interests: Exchange Traded Funds — — 18.6 (1.3 ) 18.6 (1.3 ) Limited Liability Companies and Limited Partnerships 13.9 (0.7 ) 33.8 (2.2 ) 47.7 (2.9 ) Total Equity Securities 38.2 (1.8 ) 60.2 (3.8 ) 98.4 (5.6 ) Total $ 1,273.9 $ (40.5 ) $ 190.3 $ (11.6 ) $ 1,464.2 $ (52.1 ) Unrealized losses on fixed maturities, which the Company has determined to be temporary at December 31, 2016 , were $46.5 million , of which $7.8 million was related to fixed maturities that were in an unrealized loss position for 12 months or longer. There were $0.1 million unrealized losses at December 31, 2016 related to securities for which the Company has recognized credit losses in earnings in the preceding table under the heading “Less Than 12 Months.” There were no unrealized losses at December 31, 2016 related to securities for which the Company has recognized credit losses in earnings in the preceding table under the heading “12 Months or Longer.” Investment-grade fixed maturity investments comprised $33.8 million and below-investment-grade fixed maturity investments comprised $12.7 million of the unrealized losses on investments in fixed maturities at December 31, 2016 . For below-investment-grade fixed maturity investments in an unrealized loss position, the unrealized loss amount, on average, was approximately 5% of the amortized cost basis of the investment. At December 31, 2016 , the Company did not have the intent to sell these investments, and it was not more likely than not that the Company would be required to sell these investments before recovery of its amortized cost basis, which may be at maturity. Based on the Company’s evaluation at December 31, 2016 of the prospects of the issuers, including, but not limited to, the credit ratings of the issuers of the investments in the fixed maturities, and the Company’s intention to not sell and its determination that it would not be required to sell before recovery of the amortized cost of such investments, the Company concluded that the declines in the fair values of the Company’s investments in fixed maturities presented in the preceding table were temporary at the evaluation date. With respect to Investments in Equity Securities, the Company concluded that the unrealized losses on its investments at December 31, 2016 were temporary based on various factors, including the relative short length and magnitude of the losses and overall market volatility, as well as, the debt-like characteristics of investments in certain other equity interests. Note 2 - Investments (continued) The following table sets forth the pre-tax amount of other than temporary impairment (“OTTI”) credit losses recognized in Retained Earnings for Investments in Fixed Maturities held by the Company as of the beginning and end of the periods presented for which a portion of the OTTI loss related to factors other than credit has been recognized in AOCI, and the corresponding changes in such amounts. Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Cumulative Balance of Pre-tax Credit Losses Recognized in Retained Earnings at Beginning of Period $ 1.4 $ 5.1 $ 2.4 $ 4.2 Pre-tax Credit Losses on Fixed Maturities without Pre-tax Credit Losses Included in Cumulative Balance at Beginning of Period 1.2 2.7 — — Reductions for Change in Impairment Status: From Status of Credit Loss to Status of Intent-to-sell or Required-to-sell — (6.3 ) — (2.7 ) Reductions for Investments Sold During Period (0.3 ) — (0.1 ) — Cumulative Balance of Pre-tax Credit Losses Recognized in Retained Earnings at End of Period $ 2.3 $ 1.5 $ 2.3 $ 1.5 Net Investment Income for the nine and three months ended September 30, 2017 and 2016 was: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Investment Income (Loss): Interest on Fixed Income Securities $ 184.0 $ 181.2 $ 61.8 $ 61.4 Dividends on Equity Securities Excluding Alternative Investments 7.0 9.0 2.6 2.7 Alternative Investments: Equity Method Limited Liability Investments 21.9 3.7 11.1 5.2 Fair Value Option Investments 1.0 (3.9 ) 0.5 (1.4 ) Limited Liability Investments Included in Equity Securities 18.7 16.6 5.9 5.7 Total Alternative Investments 41.6 16.4 17.5 9.5 Short-term Investments 1.0 0.4 0.5 0.2 Loans to Policyholders 15.7 16.1 4.9 5.4 Real Estate 8.3 8.9 2.6 3.0 Other 0.2 — 0.1 — Total Investment Income 257.8 232.0 90.0 82.2 Investment Expenses: Real Estate 7.7 8.4 2.6 2.9 Other Investment Expenses 5.5 5.2 1.5 1.6 Total Investment Expenses 13.2 13.6 4.1 4.5 Net Investment Income $ 244.6 $ 218.4 $ 85.9 $ 77.7 Note 2 - Investments (continued) Gross gains and losses on sales of investments in fixed maturities and equity securities for the nine and three months ended September 30, 2017 and 2016 were: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Fixed Maturities: Gains on Sales $ 7.3 $ 14.1 $ 2.4 $ 2.7 Losses on Sales (0.4 ) (1.1 ) — (0.8 ) Equity Securities: Gains on Sales 31.1 9.8 3.9 9.3 Losses on Sales — (0.1 ) — — Equity Method Limited Liability Investments include investments in limited liability investment companies and limited partnerships in which the Company’s interests are not deemed minor and are accounted for under the equity method of accounting. The Company’s investments in Equity Method Limited Liability Investments are generally of a passive nature in that the Company does not take an active role in the management of the investment entity. The Company’s maximum exposure to loss at September 30, 2017 is limited to the total carrying value of $160.1 million . In addition, the Company had outstanding commitments totaling approximately $82.5 million to fund Equity Method Limited Liability Investments at September 30, 2017 . The carrying values of the Company’s Other Investments at September 30, 2017 and December 31, 2016 were: (Dollars in Millions) Sep 30, Dec 31, Loans to Policyholders at Unpaid Principal $ 295.5 $ 294.2 Real Estate at Depreciated Cost 118.1 140.2 Trading Securities at Fair Value 6.3 5.3 Other 0.1 0.2 Total $ 420.0 $ 439.9

Property and Casualty Insurance

Property and Casualty Insurance Reserves	9 Months Ended
	Sep. 30, 2017
Subsequent Event Disclosure Text Block Supplement [Abstract]
Property and Casualty Insurance Reserves	Note 3 - Property and Casualty Insurance Reserves Property and casualty insurance reserve activity for the nine months ended September 30, 2017 and 2016 was: Nine Months Ended (Dollars in Millions) Sep 30, Sep 30, Property and Casualty Insurance Reserves: Gross of Reinsurance and Indemnification at Beginning of Year $ 931.4 $ 862.8 Less Reinsurance and Indemnification Recoverables at Beginning of Year 50.2 52.0 Property and Casualty Insurance Reserves - Net of Reinsurance and Indemnification at Beginning of Year 881.2 810.8 Incurred Losses and LAE Related to: Current Year: Continuing Operations 1,072.0 1,031.1 Prior Years: Continuing Operations 19.7 (17.7 ) Discontinued Operations — (3.3 ) Total Incurred Losses and LAE Related to Prior Years 19.7 (21.0 ) Total Incurred Losses and LAE 1,091.7 1,010.1 Paid Losses and LAE Related to: Current Year: Continuing Operations 600.7 583.2 Prior Years: Continuing Operations 443.6 360.8 Discontinued Operations 3.0 5.3 Total Paid Losses and LAE Related to Prior Years 446.6 366.1 Total Paid Losses and LAE 1,047.3 949.3 Property and Casualty Insurance Reserves - Net of Reinsurance and Indemnification at End of Period 925.6 871.6 Plus Reinsurance and Indemnification Recoverables at End of Period 42.9 49.1 Property and Casualty Insurance Reserves - Gross of Reinsurance and Indemnification at End of Period $ 968.5 $ 920.7 Note 3 - Property and Casualty Insurance Reserves (continued) Property and casualty insurance reserves are estimated based on historical experience patterns and current economic trends. Actual loss experience and loss trends are likely to differ from these historical experience patterns and economic conditions. Loss experience and loss trends emerge over several years from the dates of loss inception. The Company monitors such emerging loss trends on a quarterly basis. Changes in such estimates are included in the Condensed Consolidated Statements of Income in the period of change. For the nine months ended September 30, 2017 , the Company increased its property and casualty insurance reserves by $19.7 million to recognize adverse development of loss and LAE reserves from prior accident years. Personal lines insurance loss and LAE reserves developed adversely by $17.7 million , and commercial lines insurance loss and LAE reserves developed adversely by $2.0 million . Personal automobile insurance loss and LAE reserves developed adversely by $18.1 million due primarily to the emergence of loss patterns that were worse than expected for both physical damage and liability insurance for the 2016 accident year. Homeowners insurance loss and LAE reserves developed favorably by $0.1 million due primarily to favorable development on catastrophes of $3.2 million related to the 2016 and 2015 accident years, partially offset by the emergence of non-catastrophe loss patterns that were worse than expected for the 2016 accident year. Other personal lines loss and LAE reserves developed favorably by $0.3 million due primarily to the emergence of more favorable loss patterns than expected for the 2015, 2014 and 2013 accident years, partially offset by the emergence of worse than expected loss patterns for the 2016 accident year. Commercial lines insurance loss and LAE reserves developed adversely due primarily to the emergence of loss patterns that were worse than expected for the 2015 accident year. For the nine months ended September 30, 2016 , the Company reduced its property and casualty insurance reserves by $21.0 million to recognize favorable development of loss and LAE reserves from prior accident years. Personal lines insurance loss and LAE reserves developed favorably by $17.7 million , and commercial lines insurance loss and LAE reserves developed favorably by $3.3 million . The commercial lines insurance loss and LAE reserve development included no development from continuing operations and favorable development of $3.3 million from discontinued operations. Personal automobile insurance loss and LAE reserves developed adversely by $7.3 million due primarily to the emergence of loss patterns that were worse than expected for liability insurance for the 2015 accident year. Homeowners insurance loss and LAE reserves developed favorably by $18.1 million due primarily to $14.3 million of favorable development on catastrophes primarily for the 2015 and 2014 accident years. Other personal lines loss and LAE reserves developed favorably by $6.9 million due primarily to the emergence of more favorable loss patterns than expected for the 2015, 2014, 2013 and 2012 accident years. The Company cannot predict whether loss and LAE reserves will develop favorably or adversely from the amounts reported in the Company’s Condensed Consolidated Financial Statements. The Company believes that any such development will not have a material effect on the Company’s consolidated shareholders’ equity, but could have a material effect on the Company’s consolidated financial results for a given period. Subsequent Events In early October 2017, a series of wildfires began burning in California. The Company expects that the catastrophe losses and loss adjustment expenses that it has incurred from these wildfires in the fourth quarter will be significant and have the potential to trigger recoveries under the Company’s catastrophe reinsurance program. The Company has not completed a full evaluation of its exposure to these wildfires, including potential reinsurance recoveries. Accordingly, the Company does not currently have an estimate of the ultimate loss related to these wildfires.

Debt

Debt	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Debt	Note 4 - Debt The Company designates debt obligations as either short-term or long-term based on maturity date at issuance. Total amortized cost of Long-term Debt, Current and Non-current, outstanding at September 30, 2017 and December 31, 2016 was: (Dollars in Millions) Sep 30, Dec 31, Senior Notes: 6.00% Senior Notes due May 15, 2017 $ — $ 359.8 4.35% Senior Notes due February 15, 2025 448.1 247.7 7.375% Subordinated Debentures due February 27, 2054 144.1 144.1 Total Long-term Debt, Current and Non-current, Outstanding $ 592.2 $ 751.6 There were no outstanding borrowings at either September 30, 2017 or December 31, 2016 under Kemper’s $225.0 million , unsecured, revolving credit agreement which expires June 2, 2020. Kemper’s subsidiaries, Trinity Universal Insurance Company (“Trinity”) and United Insurance Company of America (“United Insurance”), are members of the Federal Home Loan Bank (“FHLB”) of Dallas and Chicago, respectively. There were no advances from the FHLB of Dallas or Chicago outstanding at either September 30, 2017 or December 31, 2016 . On February 24, 2015 , Kemper issued $250 million of its 4.350% Senior Notes due February 15, 2025 (the “2025 Senior Notes”). On June 12, 2017 , Kemper issued an additional $200 million of its 2025 Senior Notes. The net proceeds of the additional issuance were $200.2 million , net of discount and transaction costs for an effective yield of 4.16% . The additional notes are fungible with the initial notes issued, and together are treated as part of a single series for all purposes under the indenture governing the 2025 Senior Notes. The 2025 Senior Notes are unsecured and may be redeemed in whole at any time or in part from time to time at Kemper’s option at specified redemption prices. Kemper is using the net proceeds from the additional issuance for general corporate purposes. During the fourth quarter of 2016, in anticipation of a debt issuance in the second quarter of 2017 and for risk management purposes, the Company entered into a derivative transaction to hedge the risk of changes in the debt cash flows attributable to changes in the benchmark U.S. Treasury interest rate during the period leading up to the probable debt issuance (“Treasury Lock”). The Treasury Lock was formally designated as a cash flow hedge at inception and qualified for hedge accounting treatment. In the second quarter of 2017, the Company de-designated a portion of the cash flow hedge because the anticipated principal issuance was less than the notional amount of the Treasury Lock and recorded a pre-tax charge of $1.1 million in Other Expenses. The effective portion of the loss on the derivative instrument upon discontinuance was $4.5 million and is reported as a component of Other Comprehensive Income before Income Taxes. Beginning with the additional issuance of the 2025 Senior Notes described in the preceding paragraph, such loss is being amortized into earnings and reported in Interest Expense in the same periods that the hedged items affect earnings. Amortization, reported in Interest Expense, was $0.1 million for the nine and three months ended September 30, 2017 . The Company expects to reclassify $0.4 million of net losses on derivative instruments from AOCI to earnings for the twelve months ended September 30, 2018 as interest expense on the debt is recognized. The Treasury Lock was in a gain position of $1.6 million at December 31, 2016 and, accordingly, such gain has been included in Other Assets in the Condensed Consolidated Balance Sheet at such date. Interest Expense, including facility fees, accretion of discount and amortization of issuance costs, was $26.9 million and $7.8 million for the nine and three months ended September 30, 2017 , respectively. Interest paid, including facility fees, was $31.8 million and $12.7 million for the nine and three months ended September 30, 2017 , respectively. Interest Expense, including facility fees, accretion of discount and amortization of issuance costs, was $33.4 million and $11.1 million for the nine and three months ended September 30, 2016 , respectively. Interest paid, including facility fees, was $30.5 million and $8.5 million for the nine and three months ended September 30, 2016 , respectively.

Income from Continuing Operatio

Income from Continuing Operations Per Unrestricted Share	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Income (Loss) from Continuing Operations Per Unrestricted Share	Note 5 - Income (Loss) from Continuing Operations Per Unrestricted Share The Company’s awards of restricted stock contain rights to receive non-forfeitable dividends and participate in the undistributed earnings with common shareholders. The Company’s awards of restricted stock units and deferred stock units also contain rights to receive non-forfeitable dividend equivalents and participate in the undistributed earnings with common shareholders. Accordingly, the Company is required to apply the two-class method of computing basic and diluted earnings per share. A reconciliation of the numerator and denominator used in the calculation of Basic Income (Loss) from Continuing Operations Per Unrestricted Share and Diluted Income (Loss) from Continuing Operations Per Unrestricted Share for the nine and three months ended September 30, 2017 and 2016 is presented below. Nine Months Ended Three Months Ended Sep 30, Sep 30, Sep 30, Sep 30, (Dollars in Millions) Income (Loss) from Continuing Operations $ 84.0 $ (16.4 ) $ 47.8 $ (18.3 ) Less Income (Loss) from Continuing Operations Attributed to Participating Awards 0.6 (0.3 ) 0.4 (0.1 ) Income (Loss) from Continuing Operations Attributed to Unrestricted Shares 83.4 (16.1 ) 47.4 (18.2 ) Dilutive Effect on Income of Equity-based Compensation Equivalent Shares — — — — Diluted Income (Loss) from Continuing Operations Attributed to Unrestricted Shares $ 83.4 $ (16.1 ) $ 47.4 $ (18.2 ) (Number of Shares in Thousands) Weighted-average Unrestricted Shares Outstanding 51,308.7 51,140.6 51,366.8 51,122.5 Equity-based Compensation Equivalent Shares 171.6 — 199.6 — Weighted-average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution 51,480.3 51,140.6 51,566.4 51,122.5 (Per Unrestricted Share in Whole Dollars) Basic Income (Loss) from Continuing Operations Per Unrestricted Share $ 1.63 $ (0.31 ) $ 0.92 $ (0.36 ) Diluted Income (Loss) from Continuing Operations Per Unrestricted Share $ 1.62 $ (0.31 ) $ 0.92 $ (0.36 ) The number of shares of Kemper common stock that were excluded from the calculations of Equity-based Compensation Equivalent Shares and Weighted-average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution for the nine and three months ended September 30, 2017 and 2016 because the effect of inclusion would be anti-dilutive is presented below. Nine Months Ended Three Months Ended (Number of Shares in Thousands) Sep 30, Sep 30, Sep 30, Sep 30, Equity-based Compensation Equivalent Shares 459.7 1,195.2 382.1 1,009.5 Weighted-average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution 459.7 1,195.2 382.1 1,009.5

Other Comprehensive Income and

Other Comprehensive Income and Accumulated Other Comprehensive Income	9 Months Ended
	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income	Note 6 - Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income The components of Other Comprehensive Income (Loss) Before Income Taxes for the nine and three months ended September 30, 2017 and 2016 were: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Other Comprehensive Income (Loss) Before Income Taxes: Unrealized Holding Gains Arising During the Period Before Reclassification Adjustment $ 110.5 $ 215.9 $ 19.2 $ (5.4 ) Reclassification Adjustment for Amounts Included in Net Income (27.7 ) 1.3 (3.6 ) (2.9 ) Unrealized Holding Gains 82.8 217.2 15.6 (8.3 ) Foreign Currency Translation Adjustments Arising During the Period Before Reclassification Adjustment 0.9 — 0.1 — Reclassification Adjustment for Amounts Included in Net Income — — — — Foreign Currency Translation Adjustments 0.9 — 0.1 — Net Unrecognized Postretirement Benefit Costs Arising During the Period — (19.5 ) — — Reclassification Adjustments for Amounts Included in Net Income: Curtailment Cost Recognized — 1.0 — — Amortization of Net Unrecognized Postretirement Benefit Costs (0.4 ) 4.7 (0.1 ) 0.4 Total Reclassification Adjustments for Amounts Included in Net Income (0.4 ) 5.7 (0.1 ) 0.4 Net Unrecognized Postretirement Benefit Costs (0.4 ) (13.8 ) (0.1 ) 0.4 Loss on Cash Flow Hedges During the Period Before Reclassification Adjustment (7.9 ) — (0.3 ) — Reclassification Adjustment for Amounts Included in Net Income 1.3 — 0.2 — Loss on Cash Flow Hedges (6.6 ) — (0.1 ) — Other Comprehensive Income (Loss) Before Income Taxes $ 76.7 $ 203.4 $ 15.5 $ (7.9 ) Note 6 - Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income (continued) The components of Other Comprehensive Income Tax Benefit (Expense) for the nine and three months ended September 30, 2017 and 2016 were: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Other Comprehensive Income Tax Benefit (Expense): Unrealized Holding Gains and Losses Arising During the Period Before Reclassification Adjustment $ (39.1 ) $ (76.0 ) $ (7.0 ) $ 2.0 Reclassification Adjustment for Amounts Included in Net Income 9.7 (0.4 ) 1.3 1.1 Unrealized Holding Gains (29.4 ) (76.4 ) (5.7 ) 3.1 Foreign Currency Translation Adjustments Arising During the Period Before Reclassification Adjustment (0.4 ) — (0.1 ) — Reclassification Adjustment for Amounts Included in Net Income — — — — Foreign Currency Translation Adjustments (0.4 ) — (0.1 ) — Net Unrecognized Postretirement Benefit Costs Arising During the Period — 6.9 — — Reclassification Adjustments for Amounts Included in Net Income: Curtailment Loss Recognized — (0.4 ) — — Amortization of Net Unrecognized Postretirement Benefit Costs 0.2 (1.7 ) 0.1 (0.2 ) Total Reclassification Adjustments for Amounts Included in Net Income 0.2 (2.1 ) 0.1 (0.2 ) Net Unrecognized Postretirement Benefit Costs 0.2 4.8 0.1 (0.2 ) Loss on Cash Flow Hedges During the Period Before Reclassification Adjustment 2.7 — — — Reclassification Adjustment for Amounts Included in Net Income (0.4 ) — — — Loss on Cash Flow Hedges 2.3 — — — Other Comprehensive Income Tax Benefit (Expense) $ (27.3 ) $ (71.6 ) $ (5.7 ) $ 2.9 The components of AOCI at September 30, 2017 and December 31, 2016 were: (Dollars in Millions) Sep 30, Dec 31, Net Unrealized Gains on Investments, Net of Income Taxes: Available for Sale Fixed Maturities with Portion of OTTI Recognized in Earnings $ (0.1 ) $ 0.1 Other Net Unrealized Gains on Investments 265.3 211.7 Foreign Currency Translation Adjustments, Net of Income Taxes (0.4 ) (0.9 ) Net Unrecognized Postretirement Benefit Costs, Net of Income Taxes (75.1 ) (74.9 ) Gain (Loss) on Cash Flow Hedges, Net of Income Taxes (3.3 ) 1.0 Accumulated Other Comprehensive Income $ 186.4 $ 137.0 Note 6 - Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income (continued) Components of AOCI were reclassified to the following lines of the Condensed Consolidated Statements of Operations for the nine and three months ended September 30, 2017 and 2016 : Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Reclassification of AOCI from Net Unrealized Gains on Investments to: Net Realized Gains on Sales of Investments $ 38.2 $ 22.7 $ 6.5 $ 11.2 Net Impairment Losses Recognized in Earnings (10.5 ) (24.0 ) (2.9 ) (8.3 ) Total Before Income Taxes 27.7 (1.3 ) 3.6 2.9 Income Tax Benefit (Expense) (9.7 ) 0.4 (1.3 ) (1.1 ) Reclassification from AOCI, Net of Income Taxes 18.0 (0.9 ) 2.3 1.8 Reclassification of AOCI from Unrecognized Postretirement Benefit Costs to: Interest and Other Expenses 0.4 (5.7 ) 0.1 (0.4 ) Income Tax Benefit (Expense) (0.2 ) 2.1 (0.1 ) 0.2 Reclassification from AOCI, Net of Income Taxes 0.2 (3.6 ) — (0.2 ) Reclassification of AOCI from Loss on Cash Flow Hedges to: Interest and Other Expenses (1.3 ) — (0.2 ) — Income Tax Benefit 0.4 — — — Reclassification from AOCI, Net of Income Taxes (0.9 ) — (0.2 ) — Total Reclassification from AOCI to Net Income (Loss) $ 17.3 $ (4.5 ) $ 2.1 $ 1.6

Changes in Shareholders' Equity

Changes in Shareholders' Equity	9 Months Ended
	Sep. 30, 2017
Equity [Abstract]
Changes in Shareholders' Equity	Note 7 - Changes in Shareholders’ Equity Changes in Shareholders’ Equity for the nine months ended September 30, 2017 were: (Dollars in Millions, Except Per Share Amounts) Total Shareholders’ Equity at Beginning of Year as Reported $ 1,975.2 Cumulative Effect of Adoption of New Accounting Standard 0.5 Shareholders’ Equity at Beginning of Year as Adjusted 1,975.7 Net Income 84.0 Other Comprehensive Income 49.4 Total Comprehensive Income 133.4 Cash Dividends and Dividend Equivalents to Shareholders ($0.72 per share) (37.1 ) Equity-based Compensation Cost 8.7 Equity-based Awards, Net of Shares Exchanged 1.7 Shareholders’ Equity at End of Period $ 2,082.4

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2017
Income Tax Disclosure [Abstract]
Income Taxes	Note 8 - Income Taxes The statute of limitations related to Kemper and its eligible subsidiaries’ consolidated Federal income tax returns is closed for all tax years up to and including 2013. The expiration of the statute of limitations related to the various state income tax returns that Kemper and its subsidiaries file varies by state. Liabilities for Unrecognized Tax Benefits at September 30, 2017 and December 31, 2016 include $6.2 million and $4.6 million , respectively, for tax positions for which the ultimate deductibility is highly certain but for which there is uncertainty about the timing of such deductibility. Because of the impact of deferred income tax accounting, other than for interest and penalties, the disallowance of the shorter deductibility period would not affect the effective income tax rate but would accelerate the payment of cash to the taxing authority to an earlier period. The Company recognizes interest and penalties, if any, related to unrecognized tax benefits in income tax expense. Liabilities for Unrecognized Tax Benefits included accrued interest of $0.5 million and $0.5 million at September 30, 2017 and December 31, 2016 , respectively. Income taxes paid, net of refunds received, were $5.5 million for the nine months ended September 30, 2017 . Income taxes paid were $10.4 million for the nine months ended September 30, 2016 .

Pension Benefits and Postretire

Pension Benefits and Postretirement Benefits Other Than Pensions	9 Months Ended
	Sep. 30, 2017
Compensation and Retirement Disclosure [Abstract]
Pension Benefits and Postretirement Benefits Other Than Pensions	Note 9 - Pension Benefits and Postretirement Benefits Other Than Pensions The Company sponsors a qualified defined benefit pension plan (the “Pension Plan”) that covers approximately 9,000 participants and beneficiaries, of which 1,600 are active employees. The Pension Plan is closed to employees newly-hired after January 1, 2006. On May 12, 2016, the Company amended the Pension Plan to freeze benefit accruals, effective June 30, 2016, for substantially all of the participants under the plan. The components of Pension Expense (Benefit) for the Pension Plan for the nine and three months ended September 30, 2017 and 2016 were: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Service Cost Earned $ — $ 4.8 $ — $ — Interest Cost on Projected Benefit Obligation 15.4 15.2 5.1 4.8 Expected Return on Plan Assets (23.2 ) (24.5 ) (7.7 ) (8.3 ) Amortization of Accumulated Net Unrecognized Pension Costs 2.0 5.8 0.7 0.9 Curtailment Gain — (0.3 ) — — Total Pension Expense (Benefit) Recognized $ (5.8 ) $ 1.0 $ (1.9 ) $ (2.6 ) The Company also sponsors an other postretirement benefit (“OPEB”) plan that provides medical, dental and/or life insurance benefits to approximately 475 retired and 200 active employees (the “OPEB Plan”). The components of OPEB Benefit for the OPEB Plan for the nine and three months ended September 30, 2017 and 2016 were: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Service Cost Earned $ 0.1 $ 0.1 — 0.1 Interest Cost on Accumulated Postretirement Benefit Obligation 0.3 0.6 0.1 0.2 Amortization of Prior Service Credit (1.0 ) — (0.3 ) — Amortization of Accumulated Net Unrecognized Gain (1.4 ) (1.1 ) (0.5 ) (0.4 ) Total OPEB Benefit $ (2.0 ) $ (0.4 ) $ (0.7 ) $ (0.1 )

Business Segments

Business Segments	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Business Segments	Note 10 - Business Segments The Company is engaged, through its subsidiaries, in the property and casualty insurance and life and health insurance businesses. The Company conducts its operations through two operating segments: Property & Casualty Insurance and Life & Health Insurance. The Property & Casualty Insurance segment’s principal products are personal automobile insurance, both preferred and nonstandard, homeowners insurance, other personal insurance and commercial automobile insurance. These products are distributed primarily through independent agents and brokers. The Life & Health Insurance segment’s principal products are individual life, accident, supplemental health and property insurance. These products are distributed by career agents employed by the Company and independent agents and brokers. Earned Premiums by product line for the nine and three months ended September 30, 2017 and 2016 were: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Personal Automobile $ 1,012.8 $ 927.4 $ 353.0 $ 313.8 Homeowners 199.6 204.2 66.7 68.5 Other Personal Property and Casualty Insurance 87.0 89.9 28.9 29.9 Commercial Automobile 38.5 40.2 13.1 13.3 Life 285.6 285.7 94.5 95.8 Accident and Health 120.6 111.2 42.0 37.6 Total Earned Premiums $ 1,744.1 $ 1,658.6 $ 598.2 $ 558.9 Segment Revenues, including a reconciliation to Total Revenues, for the nine and three months ended September 30, 2017 and 2016 were: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Revenues: Property & Casualty Insurance: Earned Premiums $ 1,283.1 $ 1,205.7 $ 443.5 $ 406.9 Net Investment Income 72.5 52.0 27.8 20.4 Other Income 0.9 0.4 0.4 0.1 Total Property & Casualty Insurance 1,356.5 1,258.1 471.7 427.4 Life & Health Insurance: Earned Premiums 461.0 452.9 154.7 152.0 Net Investment Income 163.8 159.6 55.9 54.5 Other Income 1.9 1.9 0.7 0.7 Total Life & Health Insurance 626.7 614.4 211.3 207.2 Total Segment Revenues 1,983.2 1,872.5 683.0 634.6 Net Realized Gains on Sales of Investments 45.0 24.0 8.1 11.6 Net Impairment Losses Recognized in Earnings (10.5 ) (24.0 ) (2.9 ) (8.3 ) Other 8.4 6.7 2.1 2.8 Total Revenues $ 2,026.1 $ 1,879.2 $ 690.3 $ 640.7 Note 10 - Business Segments (continued) Segment Operating Profit (Loss), including a reconciliation to Income (Loss) from Continuing Operations before Income Taxes, for the nine and three months ended September 30, 2017 and 2016 was: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Segment Operating Profit (Loss): Property & Casualty Insurance $ (2.2 ) $ (24.4 ) $ 30.8 $ 15.6 Life & Health Insurance 99.8 10.6 36.0 (45.7 ) Total Segment Operating Profit (Loss) 97.6 (13.8 ) 66.8 (30.1 ) Corporate and Other Operating Loss (15.2 ) (23.3 ) (3.7 ) (6.4 ) Total Operating Profit (Loss) 82.4 (37.1 ) 63.1 (36.5 ) Net Realized Gains on Sales of Investments 45.0 24.0 8.1 11.6 Net Impairment Losses Recognized in Earnings (10.5 ) (24.0 ) (2.9 ) (8.3 ) Income (Loss) from Continuing Operations before Income Taxes $ 116.9 $ (37.1 ) $ 68.3 $ (33.2 ) Segment Net Operating Income (Loss), including a reconciliation to Income (Loss) from Continuing Operations, for the nine and three months ended September 30, 2017 and 2016 was: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Segment Net Operating Income (Loss): Property & Casualty Insurance $ 5.7 $ (9.9 ) $ 22.9 $ 12.1 Life & Health Insurance 65.5 7.3 23.5 (29.4 ) Total Segment Net Operating Income (Loss) 71.2 (2.6 ) 46.4 (17.3 ) Corporate and Other Net Operating Loss (9.7 ) (13.8 ) (2.0 ) (3.1 ) Consolidated Net Operating Income (Loss) 61.5 (16.4 ) 44.4 (20.4 ) Net Income (Loss) From: Net Realized Gains on Sales of Investments 29.3 15.6 5.3 7.5 Net Impairment Losses Recognized in Earnings (6.8 ) (15.6 ) (1.9 ) (5.4 ) Income (Loss) from Continuing Operations $ 84.0 $ (16.4 ) $ 47.8 $ (18.3 )

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value Measurements	Note 11 - Fair Value Measurements The Company classifies its investments in Fixed Maturities and Equity Securities as available for sale and reports these investments at fair value. The Company has elected the fair value option method of accounting for investments in certain hedge funds and, accordingly, reports these investments at fair value. The Company classifies certain investments in mutual funds included in Other Investments as trading securities and reports these investments at fair value. The Company has a derivative instrument that is classified as a cash flow hedge and reported at fair value in Accrued Expenses and Other Liabilities at September 30, 2017 . Note 11 - Fair Value Measurements (continued) Certain investments that are measured at fair value using the net asset value practical expedient are not required to be classified using the fair value hierarchy, but are presented in the following two tables to permit reconciliation of the fair value hierarchy to the amounts presented in the Condensed Consolidated Balance Sheet. The valuation of assets and liabilities measured at fair value in the Company’s Condensed Consolidated Balance Sheet at September 30, 2017 is summarized below. Fair Value Measurements (Dollars in Millions) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Measured at Net Asset Value Total Fair Value Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 117.1 $ 242.0 $ — $ — $ 359.1 States and Political Subdivisions — 1,721.6 1.4 — 1,723.0 Foreign Governments — 3.3 — — 3.3 Corporate Securities: Bonds and Notes — 2,645.7 387.4 — 3,033.1 Redeemable Preferred Stocks — — 0.1 — 0.1 Collateralized Loan Obligations — 29.6 93.5 — 123.1 Other Mortgage- and Asset-backed — 1.1 — — 1.1 Total Investments in Fixed Maturities 117.1 4,643.3 482.4 — 5,242.8 Equity Securities: Preferred Stocks: Finance, Insurance and Real Estate — 58.6 — — 58.6 Other Industries — 12.2 12.4 — 24.6 Common Stocks: Finance, Insurance and Real Estate 7.2 — — — 7.2 Other Industries 0.6 0.5 12.7 — 13.8 Other Equity Interests: Exchange Traded Funds 205.0 — — — 205.0 Limited Liability Companies and Limited Partnerships — — 34.1 168.8 202.9 Total Investments in Equity Securities 212.8 71.3 59.2 168.8 512.1 Fair Value Option Investments: Limited Liability Companies and Limited Partnerships Hedge Funds — — — 77.1 77.1 Other Investments: Trading Securities 6.3 — — — 6.3 Other Liabilities: Derivative Instrument Classified as Cash Flow Hedge — (0.7 ) — — (0.7 ) Total $ 336.2 $ 4,713.9 $ 541.6 $ 245.9 $ 5,837.6 At September 30, 2017 , the Company had unfunded commitments to invest an additional $133.0 million in certain limited liability investment companies and limited partnerships that will be included in Other Equity Interests if funded. Note 11 - Fair Value Measurements (continued) The valuation of assets measured at fair value in the Company’s Condensed Consolidated Balance Sheet at December 31, 2016 is summarized below. Fair Value Measurements (Dollars in Millions) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Measured at Net Asset Value Total Fair Value Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 119.5 $ 216.8 $ — $ — $ 336.3 States and Political Subdivisions — 1,711.1 3.8 — 1,714.9 Foreign Governments — 3.4 — — 3.4 Corporate Securities: Bonds and Notes — 2,541.6 403.2 — 2,944.8 Redeemable Preferred Stocks — — 0.6 — 0.6 Collateralized Loan Obligations — 19.3 103.5 — 122.8 Other Mortgage- and Asset-backed — 2.1 — — 2.1 Total Investments in Fixed Maturities 119.5 4,494.3 511.1 — 5,124.9 Equity Securities: Preferred Stocks: Finance, Insurance and Real Estate — 59.6 — — 59.6 Other Industries — 11.4 11.5 — 22.9 Common Stocks: Finance, Insurance and Real Estate 26.4 — 7.1 — 33.5 Other Industries 0.4 0.2 11.1 — 11.7 Other Equity Interests: Exchange Traded Funds 144.4 — — — 144.4 Limited Liability Companies and Limited Partnerships — — 40.9 168.7 209.6 Total Investments in Equity Securities 171.2 71.2 70.6 168.7 481.7 Fair Value Option Investments: Limited Liability Companies and Limited Partnership Hedge Funds — — — 111.4 111.4 Other Investments: Trading Securities 5.3 — — — 5.3 Other Assets: Derivative Instrument Classified as Cash Flow Hedge — 1.6 — — 1.6 Total $ 296.0 $ 4,567.1 $ 581.7 $ 280.1 $ 5,724.9 The Company’s investments in Fixed Maturities that are classified as Level 1 in the two preceding tables primarily consist of U.S. Treasury Bonds and Notes. The Company’s investments in Equity Securities that are classified as Level 1 in the two preceding tables consist of either investments in publicly-traded common stocks or exchange traded funds. The Company’s investments in Fixed Maturities that are classified as Level 2 in the two preceding tables primarily consist of investments in corporate bonds, obligations of states and political subdivisions, and bonds and mortgage-backed securities of U.S. government Note 11 - Fair Value Measurements (continued) agencies. The Company’s investments in Equity Securities that are classified as Level 2 in the two preceding tables primarily consist of investments in preferred stocks. The Company uses a leading, nationally recognized provider of market data and analytics to price the vast majority of the Company’s Level 2 measurements. The provider utilizes evaluated pricing models that vary by asset class and incorporate available trade, bid and other market information. Because many fixed maturity securities do not trade on a daily basis, the provider’s evaluated pricing applications apply available information through processes such as benchmark curves, benchmarking of like securities, sector groupings and matrix pricing to prepare evaluations. In addition, the provider uses model processes to develop prepayment and interest rate scenarios. The pricing provider’s models and processes also take into account market convention. For each asset class, teams of its evaluators gather information from market sources and integrate relevant credit information, perceived market movements and sector news into the evaluated pricing applications and models. The Company generally validates the measurements obtained from its primary pricing provider by comparing them with measurements obtained from one additional pricing provider that provides either prices from recent market transactions, quotes in inactive markets or evaluations based on its own proprietary models. The Company investigates significant differences related to the values provided. On completion of its investigation, management exercises judgment to determine the price selected and whether adjustments, if any, to the price obtained from the Company’s primary pricing provider would warrant classification of the price as Level 3. In instances where a measurement cannot be obtained from either pricing provider, the Company generally will evaluate bid prices from one or more binding quotes obtained from market makers to value investments in inactive markets and classified by the Company as Level 2. The Company generally classifies securities when it receives non-binding quotes or indications as Level 3 securities unless the Company can validate the quote or indication against recent transactions in the market. The Company’s Investments in Fixed Maturities that are classified as Level 3 in the two preceding tables primarily consist of privately placed securities not rated by a Nationally Recognized Statistical Rating Organization and are priced primarily using a market yield approach. A market yield approach uses a risk-free rate plus a credit spread depending on the underlying credit profile of the security. For floating rate securities, the risk-free rate used in the market yield is the contractual floating rate of the security. For each individual security, the Company or the Company’s third party appraiser gathers information from market sources, relevant credit information, perceived market movements and sector news and determines an appropriate market yield for each security. The market yield selected is then used to discount the estimated future cash flows of the security to determine the fair value. The Company separately evaluates market yields based upon asset class to assess the reasonableness of the recorded fair value. For non-investment-grade Investments in Fixed Maturities that are classified as Level 3, the two primary asset classes are senior debt and junior debt. Senior debt includes those securities that receive first priority in a liquidation and junior debt includes any fixed maturity security with other than first priority in a liquidation. The table below presents quantitative information about the significant unobservable inputs utilized by the Company in determining fair values for fixed maturity investments in corporate securities classified as Level 3 at September 30, 2017 . (Dollars in Millions) Unobservable Input Total Fair Value Range of Unobservable Inputs Weighted-average Yield Investment-grade Market Yield $ 93.0 2.4 % - 6.4 % 3.6 % Non-investment-grade: Senior Debt Market Yield 161.1 4.1 - 14.9 9.9 Junior Debt Market Yield 119.2 6.6 - 27.2 13.1 Collateralized Loan Obligations Market Yield 93.5 4.0 - 9.3 7.0 Other Various 15.6 Total Level 3 Fixed Maturity Investments in Corporate Securities $ 482.4 Note 11 - Fair Value Measurements (continued) The table below presents quantitative information about the significant unobservable inputs utilized by the Company in determining fair values for fixed maturity investments in corporate securities classified as Level 3 at December 31, 2016 . (Dollars in Millions) Unobservable Input Total Fair Value Range of Unobservable Inputs Weighted-average Yield Investment-grade Market Yield $ 106.1 2.7 % - 5.1 % 3.8 % Non-investment-grade: Senior Debt Market Yield 142.2 4.8 - 14.0 9.6 Junior Debt Market Yield 143.3 9.5 - 20.0 13.0 Collateralized Loan Obligations Market Yield 103.5 3.7 - 9.9 6.3 Other Debt Various 16.0 Total Level 3 Fixed Maturity Investments in Corporate Securities $ 511.1 For an investment in a fixed maturity security, an increase in the yield used to determine the fair value of the security will decrease the fair value of the security. A decrease in the yield used to determine fair value will increase the fair value of the security, but the fair value increase is generally limited to par, unless callable at a premium, if the security is currently callable. The Company’s other investments that are classified as Level 3 primarily consist of Limited Liability Companies and Limited Partnerships, but also certain Preferred Stocks and Common Stocks. The Company either uses valuations provided by third party fund managers or third party appraisers, or that are generated internally. These valuations typically employ various valuation techniques commonly used in the industry, including earnings multiples based on comparable public securities, industry-specific non-earnings based multiples, market yields based on comparable public securities and discounted cash flow models. Information by security type pertaining to the changes in the fair value of the Company’s investments classified as Level 3 for the nine months ended September 30, 2017 is presented below. Fixed Maturities Equity Securities (Dollars in Millions) Corporate Bonds and Notes States and Political Sub-divisions Redeemable Preferred Stocks Collateralized Loan Obligations Preferred and Common Stocks Other Equity Interests Total Balance at Beginning of Period $ 403.2 $ 3.8 $ 0.6 $ 103.5 $ 29.7 $ 40.9 $ 581.7 Total Gains (Losses): Included in Condensed Consolidated Statement of Operations (4.7 ) (1.2 ) 0.1 1.4 1.7 3.7 1.0 Included in Other Comprehensive Income (Loss) 4.6 — (0.1 ) 1.7 0.9 (6.3 ) 0.8 Purchases 120.4 — — 22.7 3.2 2.9 149.2 Settlements (75.5 ) (2.6 ) (0.5 ) (18.0 ) — — (96.6 ) Sales (32.0 ) — — (11.0 ) (6.9 ) (7.1 ) (57.0 ) Transfers into Level 3 — 1.4 — 5.0 — — 6.4 Transfers out of Level 3 (28.6 ) — — (11.8 ) (3.5 ) — (43.9 ) Balance at End of Period $ 387.4 $ 1.4 $ 0.1 $ 93.5 $ 25.1 $ 34.1 $ 541.6 Note 11 - Fair Value Measurements (continued) Information by security type pertaining to the changes in the fair value of the Company’s investments classified as Level 3 for the three months ended September 30, 2017 is presented below. Fixed Maturities Equity Securities (Dollars in Millions) Corporate Bonds and Notes States and Political Sub- divisions Redeemable Preferred Stocks Collateralized Loan Obligations Preferred and Common Stocks Other Equity Interests Total Balance at Beginning of Period $ 396.1 $ — $ 0.1 $ 95.4 $ 22.8 $ 32.2 $ 546.6 Total Gains (Losses): Included in Condensed Consolidated Statement of Operations (0.8 ) — — 0.5 0.4 0.3 0.4 Included in Other Comprehensive Income (Loss) 1.8 — — — 2.4 0.4 4.6 Purchases 40.4 — — 6.3 — 1.5 48.2 Settlements (31.2 ) — — (5.5 ) — — (36.7 ) Sales (3.7 ) — — (4.3 ) (0.5 ) (0.3 ) (8.8 ) Transfers into Level 3 — 1.4 — 5.0 — — 6.4 Transfers out of Level 3 (15.2 ) — — (3.9 ) — — (19.1 ) Balance at End of Period $ 387.4 $ 1.4 $ 0.1 $ 93.5 $ 25.1 $ 34.1 $ 541.6 The Company’s policy is to recognize transfers between levels as of the end of the reporting period. There were no transfers between levels 1 and 2 for the nine and three months ended September 30, 2017 . Transfers out of Level 3 were $43.9 million for the nine months ended September 30, 2017 , of which $3.5 million was transferred into Level 1 due to an issuer’s initial public offering of the security and $40.4 million was transferred into Level 2 due to changes in the availability of market observable inputs. Transfers out of Level 3 for the three months ended September 30, 2017 were due to changes in the availability of market observable inputs. Note 11 - Fair Value Measurements (continued) Information by security type pertaining to the changes in the fair value of the Company’s investments classified as Level 3 for the nine months ended September 30, 2016 is presented below. Fixed Maturities Equity Securities (Dollars in Millions) Corporate Bonds and Notes States and Political Sub- divisions Redeemable Preferred Stocks Collateralized Loan Obligations Other Mortgage- and Asset- backed Preferred and Common Stocks Other Equity Interests Total Balance at Beginning of Period $ 436.3 $ — $ 3.8 $ 87.3 $ 3.8 $ 30.0 $ 45.6 $ 606.8 Total Gains (Losses): Included in Condensed Consolidated Statement of Operations (15.8 ) — — (0.2 ) 0.4 0.5 (0.7 ) (15.8 ) Included in Other Comprehensive Income (Loss) 2.4 — — 3.0 (0.4 ) 3.5 (3.4 ) 5.1 Purchases 148.3 — — 33.2 — 0.2 2.1 183.8 Settlements (34.9 ) — (2.9 ) — (3.0 ) — — (40.8 ) Sales (79.3 ) — — (1.9 ) — (3.2 ) (4.6 ) (89.0 ) Transfers into Level 3 — 4.1 — — — — — 4.1 Transfers out of Level 3 (15.0 ) — — (10.1 ) (0.8 ) — — (25.9 ) Balance at End of Period $ 442.0 $ 4.1 $ 0.9 $ 111.3 $ — $ 31.0 $ 39.0 $ 628.3 Information by security type pertaining to the changes in the fair value of the Company’s investments classified as Level 3 for the three months ended September 30, 2016 is presented below. Fixed Maturities Equity Securities (Dollars in Millions) Corporate Bonds and Notes States and Political Sub- divisions Redeemable Preferred Stocks Collateralized Loan Obligations Other Mortgage- and Asset- backed Preferred and Common Stocks Other Equity Interests Total Balance at Beginning of Period $ 459.4 $ — $ 2.9 $ 102.2 $ 3.7 $ 31.4 $ 47.2 $ 646.8 Total Gains (Losses): Included in Condensed Consolidated Statement of Operations (7.0 ) — — 0.1 0.4 1.4 — (5.1 ) Included in Other Comprehensive Income (Loss) (0.9 ) — 0.4 5.2 (0.4 ) 1.0 (6.2 ) (0.9 ) Purchases 60.1 — — 13.9 — 0.1 0.1 74.2 Settlements (20.6 ) — (2.4 ) — (2.9 ) — — (25.9 ) Sales (34.0 ) — — — — (2.9 ) (2.1 ) (39.0 ) Transfers into Level 3 — 4.1 — — — — — 4.1 Transfers out of Level 3 (15.0 ) — — (10.1 ) (0.8 ) — — (25.9 ) Balance at End of Period $ 442.0 $ 4.1 $ 0.9 $ 111.3 $ — $ 31.0 $ 39.0 $ 628.3 The Company’s policy is to recognize transfers between levels as of the end of the reporting period. There were no transfers between levels 1 and 2 or Levels 1 and 3 for the nine and three months ended September 30, 2016 . Transfers into or out of Level 3 for the nine and three months ended September 30, 2016 were due to changes in the availability of market observable inputs. Note 11 - Fair Value Measurements (continued) The fair value of Debt is estimated using quoted prices for similar liabilities in markets that are not active. The inputs used in the valuation are considered Level 2 measurements. The fair value of Short-term Investments is estimated using inputs that are considered either Level 1 or Level 2 measurements.

Contingencies

Contingencies	9 Months Ended
	Sep. 30, 2017
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Note 12 - Contingencies In the ordinary course of its businesses, the Company is involved in legal proceedings, including lawsuits, regulatory examinations, audits and inquiries. Except with regard to the matters discussed below, based on currently available information, the Company does not believe that it is reasonably possible that any of its pending legal proceedings will have a material effect on the Company’s consolidated financial statements. Over the last several years there have been an array of initiatives that seek, in various ways, to impose new duties on life insurance companies to proactively search for information related to the deaths of their insureds. These initiatives, which can include legislation, unclaimed property audits, market conduct examinations, and related litigation, could have the effect of altering the terms of Kemper’s life insurance subsidiaries’ existing life insurance contracts by imposing requirements that did not exist and were not contemplated at the time those companies entered into such contracts. In the third quarter of 2016, the Company voluntarily began implementing a comprehensive process to compare its life insurance records against one or more death verification databases to determine if any of its insureds may be deceased. Any attempt to estimate the ultimate outcomes of the aforementioned initiatives entails uncertainties including, but not limited to (i) the scope and interpretation of statutes that require proactive use of death verification databases (“DMF”), including the matching criteria and methodologies to be used in comparing policy records against a DMF, (ii) the universe of policies affected, (iii) the results of audits, examinations and other actions by regulators, and (iv) related litigation. Gain Contingency In October 2015, Kemper’s subsidiary, Kemper Corporate Services, Inc. (“KCSI”), filed a demand for arbitration with the American Arbitration Association (“AAA”), claiming that a vendor had breached the terms of a master software license and services agreement and related agreements (collectively, the “Agreements”) by failing, among other things, to timely produce and deliver certain software to KCSI. The vendor denied KCSI’s claims and filed a counterclaim. In April 2017, the parties participated in an evidentiary hearing before a AAA-appointed arbitrator. Subsequently, the parties submitted post-hearing briefs, held closing arguments, and submitted proposed awards to the arbitrator. On October 2, 2017, the arbitrator issued a partial final award (the “Partial Final Award”) in favor of KCSI. Pursuant to the material portions of the Partial Final Award: (i) KCSI’s claim that the vendor had breached the Agreements was granted; (ii) the vendor’s counterclaim and affirmative defenses were denied; (iii) KCSI was awarded direct damages of $84.3 million ; and (iv) KCSI is entitled to pre-judgment interest in an amount to be calculated at an annual rate of 9% pursuant to applicable law. Under the Partial Final Award, KCSI is also entitled to submit a petition seeking an award of certain costs and expenses of the arbitration. On October 11, 2017, KCSI submitted to the arbitrator a supplemental petition seeking pre-judgment interest and an award for certain costs and expenses.There is presently no schedule set for issuance of the final award. The arbitrator’s decision on the vendor’s liability for breach and the damages for that breach is final, subject to challenge by the vendor on any grounds available under applicable law. On October 10, 2017, KCSI filed a motion to confirm the arbitration award in the United States District Court for the Northern District of Texas seeking confirmation and enforcement of the Partial Final Award. KCSI intends to amend its motion to confirm the arbitration award with respect to the final award to be rendered by the arbitrator that may include some or all of the requested attorneys’ fees, costs and pre-judgment interest. The Company cannot make any assurance as to the final amount that will actually be awarded or when it will be collected. The Partial Final Award and the final award are treated as gain contingencies for accounting purposes and, accordingly, are not recognized in these Condensed Consolidated Financial Statements.

Related Parties

Related Parties	9 Months Ended
	Sep. 30, 2017
Related Party Transactions [Abstract]
Related Parties	Note 13 - Related Parties Mr. Christopher B. Sarofim, a director of Kemper, is Vice Chairman and a member of the board of directors of Fayez Sarofim & Co. (“FS&C”), a registered investment advisory firm. The Company’s defined benefit pension plan had $160.4 million in assets managed by FS&C at September 30, 2017 under an agreement with FS&C whereby FS&C provides investment management services with respect to certain funds of the plan. Investment expenses incurred in connection with such agreement were $0.6 million and $0.3 million for the nine months ended September 30, 2017 and 2016 , respectively. The Company believes that the services described above have been provided on terms no less favorable to the Company than could have been negotiated with non-affiliated third parties.

Investments (Tables)

Investments (Tables)	9 Months Ended
	Sep. 30, 2017
Schedule of Available-for-sale Securities [Line Items]
Investments Classified by Contractual Maturity Date [Table Text Block]	The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at September 30, 2017 by contractual maturity were: (Dollars in Millions) Amortized Cost Fair Value Due in One Year or Less $ 188.3 $ 190.8 Due after One Year to Five Years 785.9 814.3 Due after Five Years to Ten Years 1,632.7 1,710.9 Due after Ten Years 1,988.1 2,234.3 Mortgage- and Asset-backed Securities Not Due at a Single Maturity Date 281.7 292.5 Investments in Fixed Maturities $ 4,876.7 $ 5,242.8
Schedule of Unrealized Loss on Investments [Table Text Block]	An aging of unrealized losses on the Company’s Investments in Fixed Maturities and Equity Securities at September 30, 2017 is presented below. Less Than 12 Months 12 Months or Longer Total (Dollars in Millions) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 67.4 $ (2.1 ) $ 41.2 $ (2.8 ) $ 108.6 $ (4.9 ) States and Political Subdivisions 169.3 (2.1 ) 28.9 (0.7 ) 198.2 (2.8 ) Corporate Securities: Bonds and Notes 292.7 (6.7 ) 96.2 (4.3 ) 388.9 (11.0 ) Collateralized Loan Obligations 2.0 — 2.4 — 4.4 — Total Fixed Maturities 531.4 (10.9 ) 168.7 (7.8 ) 700.1 (18.7 ) Equity Securities: Preferred Stocks: Finance, Insurance and Real Estate — — 0.2 — 0.2 — Other Industries 0.1 — 0.2 — 0.3 — Common Stocks: Finance, Insurance and Real Estate 2.2 (0.8 ) — — 2.2 (0.8 ) Other Industries 0.2 (0.2 ) 0.5 — 0.7 (0.2 ) Other Equity Interests: Limited Liability Companies and Limited Partnerships 46.3 (1.9 ) 32.1 (3.6 ) 78.4 (5.5 ) Total Equity Securities 48.8 (2.9 ) 33.0 (3.6 ) 81.8 (6.5 ) Total $ 580.2 $ (13.8 ) $ 201.7 $ (11.4 ) $ 781.9 $ (25.2 ) The Company regularly reviews its investment portfolio for factors that may indicate that a decline in fair value of an investment is other than temporary. The portions of the declines in the fair values of investments that are determined to be other than temporary are reported as losses in the Condensed Consolidated Statements of Operations in the periods when such determinations are made. Note 2 - Investments (continued) Unrealized losses on fixed maturities, which the Company has determined to be temporary at September 30, 2017 , were $18.7 million , of which $7.8 million was related to fixed maturities that were in an unrealized loss position for 12 months or longer. There were no unrealized losses at September 30, 2017 related to securities for which the Company has recognized credit losses in earnings in the preceding table under the heading “Less Than 12 Months.” There were no unrealized losses at September 30, 2017 related to securities for which the Company has recognized credit losses in earnings in the preceding table under the heading “12 Months or Longer.” Investment-grade fixed maturity investments comprised $12.0 million and below-investment-grade fixed maturity investments comprised $6.7 million of the unrealized losses on investments in fixed maturities at September 30, 2017 . For below-investment-grade fixed maturity investments in an unrealized loss position, the unrealized loss amount, on average, was approximately 4% of the amortized cost basis of the investment. At September 30, 2017 , the Company did not have the intent to sell these investments, and it was not more likely than not that the Company would be required to sell these investments before it recovered the amortized cost of such investments, which may be at maturity. Based on the Company’s evaluation at September 30, 2017 of the prospects of the issuers, including, but not limited to, the credit ratings of the issuers of the investments in the fixed maturities, and the Company’s intention to not sell and its determination that it would not be required to sell before it recovered the amortized cost of such investments, the Company concluded that the declines in the fair values of the Company’s investments in fixed maturities presented in the preceding table were temporary at the evaluation date. With respect to Investments in Equity Securities, the Company concluded that the unrealized losses on its investments in preferred and common stocks at September 30, 2017 were temporary based on various factors, including the relative short length and magnitude of the losses and overall market volatility. The Company’s investments in other equity interests include investments in limited liability companies and limited partnerships that primarily invest in mezzanine debt, distressed debt and secondary transactions. By the nature of their underlying investments, the Company believes that some of its investments in the limited liability companies and limited partnerships exhibit debt-like characteristics which, among other factors, the Company also considers when evaluating these investments for impairment. Based on evaluations of the factors in the preceding paragraph, the Company concluded that the declines in the fair values of the Company’s investments in equity securities presented in the preceding table were temporary at September 30, 2017 . Note 2 - Investments (continued) An aging of unrealized losses on the Company’s Investments in Fixed Maturities and Equity Securities at December 31, 2016 is presented below. Less Than 12 Months 12 Months or Longer Total (Dollars in Millions) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 117.7 $ (7.2 ) $ 1.1 $ — $ 118.8 $ (7.2 ) States and Political Subdivisions 432.7 (14.1 ) 0.3 — 433.0 (14.1 ) Foreign Governments 2.1 (0.1 ) — — 2.1 (0.1 ) Corporate Securities: Bonds and Notes 663.3 (16.6 ) 107.3 (7.4 ) 770.6 (24.0 ) Collateralized Loan Obligations 19.9 (0.7 ) 21.4 (0.4 ) 41.3 (1.1 ) Total Fixed Maturities 1,235.7 (38.7 ) 130.1 (7.8 ) 1,365.8 (46.5 ) Equity Securities: Preferred Stocks: Finance, Insurance and Real Estate 15.6 (0.5 ) 7.3 (0.3 ) 22.9 (0.8 ) Other Industries 5.3 (0.5 ) — — 5.3 (0.5 ) Common Stocks: Finance, Insurance and Real Estate 2.8 — — — 2.8 — Other Industries 0.6 (0.1 ) 0.5 — 1.1 (0.1 ) Other Equity Interests: Exchange Traded Funds — — 18.6 (1.3 ) 18.6 (1.3 ) Limited Liability Companies and Limited Partnerships 13.9 (0.7 ) 33.8 (2.2 ) 47.7 (2.9 ) Total Equity Securities 38.2 (1.8 ) 60.2 (3.8 ) 98.4 (5.6 ) Total $ 1,273.9 $ (40.5 ) $ 190.3 $ (11.6 ) $ 1,464.2 $ (52.1 ) Unrealized losses on fixed maturities, which the Company has determined to be temporary at December 31, 2016 , were $46.5 million , of which $7.8 million was related to fixed maturities that were in an unrealized loss position for 12 months or longer. There were $0.1 million unrealized losses at December 31, 2016 related to securities for which the Company has recognized credit losses in earnings in the preceding table under the heading “Less Than 12 Months.” There were no unrealized losses at December 31, 2016 related to securities for which the Company has recognized credit losses in earnings in the preceding table under the heading “12 Months or Longer.” Investment-grade fixed maturity investments comprised $33.8 million and below-investment-grade fixed maturity investments comprised $12.7 million of the unrealized losses on investments in fixed maturities at December 31, 2016 . For below-investment-grade fixed maturity investments in an unrealized loss position, the unrealized loss amount, on average, was approximately 5% of the amortized cost basis of the investment. At December 31, 2016 , the Company did not have the intent to sell these investments, and it was not more likely than not that the Company would be required to sell these investments before recovery of its amortized cost basis, which may be at maturity. Based on the Company’s evaluation at December 31, 2016 of the prospects of the issuers, including, but not limited to, the credit ratings of the issuers of the investments in the fixed maturities, and the Company’s intention to not sell and its determination that it would not be required to sell before recovery of the amortized cost of such investments, the Company concluded that the declines in the fair values of the Company’s investments in fixed maturities presented in the preceding table were temporary at the evaluation date. With respect to Investments in Equity Securities, the Company concluded that the unrealized losses on its investments at December 31, 2016 were temporary based on various factors, including the relative short length and magnitude of the losses and overall market volatility, as well as, the debt-like characteristics of investments in certain other equity interests.
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Table Text Block]	The following table sets forth the pre-tax amount of other than temporary impairment (“OTTI”) credit losses recognized in Retained Earnings for Investments in Fixed Maturities held by the Company as of the beginning and end of the periods presented for which a portion of the OTTI loss related to factors other than credit has been recognized in AOCI, and the corresponding changes in such amounts. Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Cumulative Balance of Pre-tax Credit Losses Recognized in Retained Earnings at Beginning of Period $ 1.4 $ 5.1 $ 2.4 $ 4.2 Pre-tax Credit Losses on Fixed Maturities without Pre-tax Credit Losses Included in Cumulative Balance at Beginning of Period 1.2 2.7 — — Reductions for Change in Impairment Status: From Status of Credit Loss to Status of Intent-to-sell or Required-to-sell — (6.3 ) — (2.7 ) Reductions for Investments Sold During Period (0.3 ) — (0.1 ) — Cumulative Balance of Pre-tax Credit Losses Recognized in Retained Earnings at End of Period $ 2.3 $ 1.5 $ 2.3 $ 1.5
Investment Income [Table Text Block]	Net Investment Income for the nine and three months ended September 30, 2017 and 2016 was: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Investment Income (Loss): Interest on Fixed Income Securities $ 184.0 $ 181.2 $ 61.8 $ 61.4 Dividends on Equity Securities Excluding Alternative Investments 7.0 9.0 2.6 2.7 Alternative Investments: Equity Method Limited Liability Investments 21.9 3.7 11.1 5.2 Fair Value Option Investments 1.0 (3.9 ) 0.5 (1.4 ) Limited Liability Investments Included in Equity Securities 18.7 16.6 5.9 5.7 Total Alternative Investments 41.6 16.4 17.5 9.5 Short-term Investments 1.0 0.4 0.5 0.2 Loans to Policyholders 15.7 16.1 4.9 5.4 Real Estate 8.3 8.9 2.6 3.0 Other 0.2 — 0.1 — Total Investment Income 257.8 232.0 90.0 82.2 Investment Expenses: Real Estate 7.7 8.4 2.6 2.9 Other Investment Expenses 5.5 5.2 1.5 1.6 Total Investment Expenses 13.2 13.6 4.1 4.5 Net Investment Income $ 244.6 $ 218.4 $ 85.9 $ 77.7
Schedule of Realized Gain (Loss) [Table Text Block]	Gross gains and losses on sales of investments in fixed maturities and equity securities for the nine and three months ended September 30, 2017 and 2016 were: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Fixed Maturities: Gains on Sales $ 7.3 $ 14.1 $ 2.4 $ 2.7 Losses on Sales (0.4 ) (1.1 ) — (0.8 ) Equity Securities: Gains on Sales 31.1 9.8 3.9 9.3 Losses on Sales — (0.1 ) — —
Schedule of Other Investments [Table Text Block]	The carrying values of the Company’s Other Investments at September 30, 2017 and December 31, 2016 were: (Dollars in Millions) Sep 30, Dec 31, Loans to Policyholders at Unpaid Principal $ 295.5 $ 294.2 Real Estate at Depreciated Cost 118.1 140.2 Trading Securities at Fair Value 6.3 5.3 Other 0.1 0.2 Total $ 420.0 $ 439.9
Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]	The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at September 30, 2017 were: Amortized Cost Gross Unrealized Fair Value (Dollars in Millions) Gains Losses U.S. Government and Government Agencies and Authorities $ 342.8 $ 21.2 $ (4.9 ) $ 359.1 States and Political Subdivisions 1,615.0 110.8 (2.8 ) 1,723.0 Foreign Governments 3.1 0.2 — 3.3 Corporate Securities: Bonds and Notes 2,796.9 247.2 (11.0 ) 3,033.1 Redeemable Preferred Stocks 0.1 — — 0.1 Collateralized Loan Obligations 118.4 4.7 — 123.1 Other Mortgage- and Asset-backed 0.4 0.7 — 1.1 Investments in Fixed Maturities $ 4,876.7 $ 384.8 $ (18.7 ) $ 5,242.8 The amortized cost and estimated fair values of the Company’s Investments in Fixed Maturities at December 31, 2016 were: Amortized Cost Gross Unrealized Fair Value (Dollars in Millions) Gains Losses U.S. Government and Government Agencies and Authorities $ 321.2 $ 22.3 $ (7.2 ) $ 336.3 States and Political Subdivisions 1,640.6 88.4 (14.1 ) 1,714.9 Foreign Governments 3.5 — (0.1 ) 3.4 Corporate Securities: Bonds and Notes 2,758.9 209.9 (24.0 ) 2,944.8 Redeemable Preferred Stocks 0.5 0.1 — 0.6 Collateralized Loan Obligations 121.2 2.7 (1.1 ) 122.8 Other Mortgage- and Asset-backed 0.9 1.2 — 2.1 Investments in Fixed Maturities $ 4,846.8 $ 324.6 $ (46.5 ) $ 5,124.9
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Schedule of Available-for-sale Securities Reconciliation [Table Text Block]	Gross unrealized gains and gross unrealized losses on the Company’s Investments in Equity Securities at September 30, 2017 were: Gross Unrealized (Dollars in Millions) Cost Gains Losses Fair Value Preferred Stocks: Finance, Insurance and Real Estate $ 53.6 $ 5.0 $ — $ 58.6 Other Industries 18.4 6.2 — 24.6 Common Stocks: Finance, Insurance and Real Estate 6.7 1.3 (0.8 ) 7.2 Other Industries 8.9 5.1 (0.2 ) 13.8 Other Equity Interests: Exchange Traded Funds 196.7 8.3 — 205.0 Limited Liability Companies and Limited Partnerships 184.8 23.6 (5.5 ) 202.9 Investments in Equity Securities $ 469.1 $ 49.5 $ (6.5 ) $ 512.1 Gross unrealized gains and gross unrealized losses on the Company’s Investments in Equity Securities at December 31, 2016 were: Gross Unrealized (Dollars in Millions) Cost Gains Losses Fair Value Preferred Stocks: Finance, Insurance and Real Estate $ 58.1 $ 2.3 $ (0.8 ) $ 59.6 Other Industries 18.5 4.9 (0.5 ) 22.9 Common Stocks: Finance, Insurance and Real Estate 31.2 2.3 — 33.5 Other Industries 7.2 4.6 (0.1 ) 11.7 Other Equity Interests: Exchange Traded Funds 136.1 9.6 (1.3 ) 144.4 Limited Liability Companies and Limited Partnerships 183.3 29.2 (2.9 ) 209.6 Investments in Equity Securities $ 434.4 $ 52.9 $ (5.6 ) $ 481.7

Property and Casualty Insuran21

Property and Casualty Insurance Reserves (Tables)	9 Months Ended
	Sep. 30, 2017
Liability for Future Policy Benefits and Unpaid Claims and Claims Adjustment Expense [Abstract]
Liability for Unpaid Claims Adjustment Expense by Expense Type [Table Text Block]	Property and casualty insurance reserve activity for the nine months ended September 30, 2017 and 2016 was: Nine Months Ended (Dollars in Millions) Sep 30, Sep 30, Property and Casualty Insurance Reserves: Gross of Reinsurance and Indemnification at Beginning of Year $ 931.4 $ 862.8 Less Reinsurance and Indemnification Recoverables at Beginning of Year 50.2 52.0 Property and Casualty Insurance Reserves - Net of Reinsurance and Indemnification at Beginning of Year 881.2 810.8 Incurred Losses and LAE Related to: Current Year: Continuing Operations 1,072.0 1,031.1 Prior Years: Continuing Operations 19.7 (17.7 ) Discontinued Operations — (3.3 ) Total Incurred Losses and LAE Related to Prior Years 19.7 (21.0 ) Total Incurred Losses and LAE 1,091.7 1,010.1 Paid Losses and LAE Related to: Current Year: Continuing Operations 600.7 583.2 Prior Years: Continuing Operations 443.6 360.8 Discontinued Operations 3.0 5.3 Total Paid Losses and LAE Related to Prior Years 446.6 366.1 Total Paid Losses and LAE 1,047.3 949.3 Property and Casualty Insurance Reserves - Net of Reinsurance and Indemnification at End of Period 925.6 871.6 Plus Reinsurance and Indemnification Recoverables at End of Period 42.9 49.1 Property and Casualty Insurance Reserves - Gross of Reinsurance and Indemnification at End of Period $ 968.5 $ 920.7

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2017
Debt Disclosure [Abstract]
Schedule of Long-term Debt Instruments [Table Text Block]	September 30, 2017 and December 31, 2016 was: (Dollars in Millions) Sep 30, Dec 31, Senior Notes: 6.00% Senior Notes due May 15, 2017 $ — $ 359.8 4.35% Senior Notes due February 15, 2025 448.1 247.7 7.375% Subordinated Debentures due February 27, 2054 144.1 144.1 Total Long-term Debt, Current and Non-current, Outstanding $ 592.2 $ 751.6

Income (Loss) from Continuing O

Income (Loss) from Continuing Operations Per Unrestricted Share (Tables)	9 Months Ended
	Sep. 30, 2017
Earnings Per Share [Abstract]
Schedule of Calculation of Numerator and Denominator in Earnings Per Share [Table Text Block]	A reconciliation of the numerator and denominator used in the calculation of Basic Income (Loss) from Continuing Operations Per Unrestricted Share and Diluted Income (Loss) from Continuing Operations Per Unrestricted Share for the nine and three months ended September 30, 2017 and 2016 is presented below. Nine Months Ended Three Months Ended Sep 30, Sep 30, Sep 30, Sep 30, (Dollars in Millions) Income (Loss) from Continuing Operations $ 84.0 $ (16.4 ) $ 47.8 $ (18.3 ) Less Income (Loss) from Continuing Operations Attributed to Participating Awards 0.6 (0.3 ) 0.4 (0.1 ) Income (Loss) from Continuing Operations Attributed to Unrestricted Shares 83.4 (16.1 ) 47.4 (18.2 ) Dilutive Effect on Income of Equity-based Compensation Equivalent Shares — — — — Diluted Income (Loss) from Continuing Operations Attributed to Unrestricted Shares $ 83.4 $ (16.1 ) $ 47.4 $ (18.2 ) (Number of Shares in Thousands) Weighted-average Unrestricted Shares Outstanding 51,308.7 51,140.6 51,366.8 51,122.5 Equity-based Compensation Equivalent Shares 171.6 — 199.6 — Weighted-average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution 51,480.3 51,140.6 51,566.4 51,122.5 (Per Unrestricted Share in Whole Dollars) Basic Income (Loss) from Continuing Operations Per Unrestricted Share $ 1.63 $ (0.31 ) $ 0.92 $ (0.36 ) Diluted Income (Loss) from Continuing Operations Per Unrestricted Share $ 1.62 $ (0.31 ) $ 0.92 $ (0.36 )
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]	The number of shares of Kemper common stock that were excluded from the calculations of Equity-based Compensation Equivalent Shares and Weighted-average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution for the nine and three months ended September 30, 2017 and 2016 because the effect of inclusion would be anti-dilutive is presented below. Nine Months Ended Three Months Ended (Number of Shares in Thousands) Sep 30, Sep 30, Sep 30, Sep 30, Equity-based Compensation Equivalent Shares 459.7 1,195.2 382.1 1,009.5 Weighted-average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution 459.7 1,195.2 382.1 1,009.5

Other Comprehensive Income (Los

Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income (Tables)	9 Months Ended
	Sep. 30, 2017
Statement of Comprehensive Income [Abstract]
Schedule of Comprehensive Income [Table Text Block]	The components of Other Comprehensive Income Tax Benefit (Expense) for the nine and three months ended September 30, 2017 and 2016 were: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Other Comprehensive Income Tax Benefit (Expense): Unrealized Holding Gains and Losses Arising During the Period Before Reclassification Adjustment $ (39.1 ) $ (76.0 ) $ (7.0 ) $ 2.0 Reclassification Adjustment for Amounts Included in Net Income 9.7 (0.4 ) 1.3 1.1 Unrealized Holding Gains (29.4 ) (76.4 ) (5.7 ) 3.1 Foreign Currency Translation Adjustments Arising During the Period Before Reclassification Adjustment (0.4 ) — (0.1 ) — Reclassification Adjustment for Amounts Included in Net Income — — — — Foreign Currency Translation Adjustments (0.4 ) — (0.1 ) — Net Unrecognized Postretirement Benefit Costs Arising During the Period — 6.9 — — Reclassification Adjustments for Amounts Included in Net Income: Curtailment Loss Recognized — (0.4 ) — — Amortization of Net Unrecognized Postretirement Benefit Costs 0.2 (1.7 ) 0.1 (0.2 ) Total Reclassification Adjustments for Amounts Included in Net Income 0.2 (2.1 ) 0.1 (0.2 ) Net Unrecognized Postretirement Benefit Costs 0.2 4.8 0.1 (0.2 ) Loss on Cash Flow Hedges During the Period Before Reclassification Adjustment 2.7 — — — Reclassification Adjustment for Amounts Included in Net Income (0.4 ) — — — Loss on Cash Flow Hedges 2.3 — — — Other Comprehensive Income Tax Benefit (Expense) $ (27.3 ) $ (71.6 ) $ (5.7 ) $ 2.9 The components of Other Comprehensive Income (Loss) Before Income Taxes for the nine and three months ended September 30, 2017 and 2016 were: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Other Comprehensive Income (Loss) Before Income Taxes: Unrealized Holding Gains Arising During the Period Before Reclassification Adjustment $ 110.5 $ 215.9 $ 19.2 $ (5.4 ) Reclassification Adjustment for Amounts Included in Net Income (27.7 ) 1.3 (3.6 ) (2.9 ) Unrealized Holding Gains 82.8 217.2 15.6 (8.3 ) Foreign Currency Translation Adjustments Arising During the Period Before Reclassification Adjustment 0.9 — 0.1 — Reclassification Adjustment for Amounts Included in Net Income — — — — Foreign Currency Translation Adjustments 0.9 — 0.1 — Net Unrecognized Postretirement Benefit Costs Arising During the Period — (19.5 ) — — Reclassification Adjustments for Amounts Included in Net Income: Curtailment Cost Recognized — 1.0 — — Amortization of Net Unrecognized Postretirement Benefit Costs (0.4 ) 4.7 (0.1 ) 0.4 Total Reclassification Adjustments for Amounts Included in Net Income (0.4 ) 5.7 (0.1 ) 0.4 Net Unrecognized Postretirement Benefit Costs (0.4 ) (13.8 ) (0.1 ) 0.4 Loss on Cash Flow Hedges During the Period Before Reclassification Adjustment (7.9 ) — (0.3 ) — Reclassification Adjustment for Amounts Included in Net Income 1.3 — 0.2 — Loss on Cash Flow Hedges (6.6 ) — (0.1 ) — Other Comprehensive Income (Loss) Before Income Taxes $ 76.7 $ 203.4 $ 15.5 $ (7.9 )
Schedule of Accumulated Other Comprehensive Income [Table Text Block]	The components of AOCI at September 30, 2017 and December 31, 2016 were: (Dollars in Millions) Sep 30, Dec 31, Net Unrealized Gains on Investments, Net of Income Taxes: Available for Sale Fixed Maturities with Portion of OTTI Recognized in Earnings $ (0.1 ) $ 0.1 Other Net Unrealized Gains on Investments 265.3 211.7 Foreign Currency Translation Adjustments, Net of Income Taxes (0.4 ) (0.9 ) Net Unrecognized Postretirement Benefit Costs, Net of Income Taxes (75.1 ) (74.9 ) Gain (Loss) on Cash Flow Hedges, Net of Income Taxes (3.3 ) 1.0 Accumulated Other Comprehensive Income $ 186.4 $ 137.0
Reclassification out of Accumulated Comprehensive Income [Table Text Block]	Components of AOCI were reclassified to the following lines of the Condensed Consolidated Statements of Operations for the nine and three months ended September 30, 2017 and 2016 : Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Reclassification of AOCI from Net Unrealized Gains on Investments to: Net Realized Gains on Sales of Investments $ 38.2 $ 22.7 $ 6.5 $ 11.2 Net Impairment Losses Recognized in Earnings (10.5 ) (24.0 ) (2.9 ) (8.3 ) Total Before Income Taxes 27.7 (1.3 ) 3.6 2.9 Income Tax Benefit (Expense) (9.7 ) 0.4 (1.3 ) (1.1 ) Reclassification from AOCI, Net of Income Taxes 18.0 (0.9 ) 2.3 1.8 Reclassification of AOCI from Unrecognized Postretirement Benefit Costs to: Interest and Other Expenses 0.4 (5.7 ) 0.1 (0.4 ) Income Tax Benefit (Expense) (0.2 ) 2.1 (0.1 ) 0.2 Reclassification from AOCI, Net of Income Taxes 0.2 (3.6 ) — (0.2 ) Reclassification of AOCI from Loss on Cash Flow Hedges to: Interest and Other Expenses (1.3 ) — (0.2 ) — Income Tax Benefit 0.4 — — — Reclassification from AOCI, Net of Income Taxes (0.9 ) — (0.2 ) — Total Reclassification from AOCI to Net Income (Loss) $ 17.3 $ (4.5 ) $ 2.1 $ 1.6

Pension Benefits and Postreti25

Pension Benefits and Postretirement Benefits Other Than Pensions (Tables)	9 Months Ended
	Sep. 30, 2017
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Defined Benefit Plans Disclosures [Table Text Block]	The components of Pension Expense (Benefit) for the Pension Plan for the nine and three months ended September 30, 2017 and 2016 were: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Service Cost Earned $ — $ 4.8 $ — $ — Interest Cost on Projected Benefit Obligation 15.4 15.2 5.1 4.8 Expected Return on Plan Assets (23.2 ) (24.5 ) (7.7 ) (8.3 ) Amortization of Accumulated Net Unrecognized Pension Costs 2.0 5.8 0.7 0.9 Curtailment Gain — (0.3 ) — — Total Pension Expense (Benefit) Recognized $ (5.8 ) $ 1.0 $ (1.9 ) $ (2.6 )
Postretirement Benefits Other than Pensions [Member]
Defined Benefit Plan Disclosure [Line Items]
Schedule of Defined Benefit Plans Disclosures [Table Text Block]	The components of OPEB Benefit for the OPEB Plan for the nine and three months ended September 30, 2017 and 2016 were: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Service Cost Earned $ 0.1 $ 0.1 — 0.1 Interest Cost on Accumulated Postretirement Benefit Obligation 0.3 0.6 0.1 0.2 Amortization of Prior Service Credit (1.0 ) — (0.3 ) — Amortization of Accumulated Net Unrecognized Gain (1.4 ) (1.1 ) (0.5 ) (0.4 ) Total OPEB Benefit $ (2.0 ) $ (0.4 ) $ (0.7 ) $ (0.1 )

Business Segments (Tables)

Business Segments (Tables)	9 Months Ended
	Sep. 30, 2017
Segment Reporting [Abstract]
Revenue from External Customers by Products and Services [Table Text Block]	Earned Premiums by product line for the nine and three months ended September 30, 2017 and 2016 were: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Personal Automobile $ 1,012.8 $ 927.4 $ 353.0 $ 313.8 Homeowners 199.6 204.2 66.7 68.5 Other Personal Property and Casualty Insurance 87.0 89.9 28.9 29.9 Commercial Automobile 38.5 40.2 13.1 13.3 Life 285.6 285.7 94.5 95.8 Accident and Health 120.6 111.2 42.0 37.6 Total Earned Premiums $ 1,744.1 $ 1,658.6 $ 598.2 $ 558.9
Reconciliation of Revenue from Segments to Consolidated [Table Text Block]	Segment Revenues, including a reconciliation to Total Revenues, for the nine and three months ended September 30, 2017 and 2016 were: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Revenues: Property & Casualty Insurance: Earned Premiums $ 1,283.1 $ 1,205.7 $ 443.5 $ 406.9 Net Investment Income 72.5 52.0 27.8 20.4 Other Income 0.9 0.4 0.4 0.1 Total Property & Casualty Insurance 1,356.5 1,258.1 471.7 427.4 Life & Health Insurance: Earned Premiums 461.0 452.9 154.7 152.0 Net Investment Income 163.8 159.6 55.9 54.5 Other Income 1.9 1.9 0.7 0.7 Total Life & Health Insurance 626.7 614.4 211.3 207.2 Total Segment Revenues 1,983.2 1,872.5 683.0 634.6 Net Realized Gains on Sales of Investments 45.0 24.0 8.1 11.6 Net Impairment Losses Recognized in Earnings (10.5 ) (24.0 ) (2.9 ) (8.3 ) Other 8.4 6.7 2.1 2.8 Total Revenues $ 2,026.1 $ 1,879.2 $ 690.3 $ 640.7
Reconciliation of Operating Profit (Loss) from Segments to Consolidated [Table Text Block]	Segment Operating Profit (Loss), including a reconciliation to Income (Loss) from Continuing Operations before Income Taxes, for the nine and three months ended September 30, 2017 and 2016 was: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Segment Operating Profit (Loss): Property & Casualty Insurance $ (2.2 ) $ (24.4 ) $ 30.8 $ 15.6 Life & Health Insurance 99.8 10.6 36.0 (45.7 ) Total Segment Operating Profit (Loss) 97.6 (13.8 ) 66.8 (30.1 ) Corporate and Other Operating Loss (15.2 ) (23.3 ) (3.7 ) (6.4 ) Total Operating Profit (Loss) 82.4 (37.1 ) 63.1 (36.5 ) Net Realized Gains on Sales of Investments 45.0 24.0 8.1 11.6 Net Impairment Losses Recognized in Earnings (10.5 ) (24.0 ) (2.9 ) (8.3 ) Income (Loss) from Continuing Operations before Income Taxes $ 116.9 $ (37.1 ) $ 68.3 $ (33.2 )
Reconciliation of Other Significant Reconciling Items from Segments to Consolidated [Table Text Block]	Segment Net Operating Income (Loss), including a reconciliation to Income (Loss) from Continuing Operations, for the nine and three months ended September 30, 2017 and 2016 was: Nine Months Ended Three Months Ended (Dollars in Millions) Sep 30, Sep 30, Sep 30, Sep 30, Segment Net Operating Income (Loss): Property & Casualty Insurance $ 5.7 $ (9.9 ) $ 22.9 $ 12.1 Life & Health Insurance 65.5 7.3 23.5 (29.4 ) Total Segment Net Operating Income (Loss) 71.2 (2.6 ) 46.4 (17.3 ) Corporate and Other Net Operating Loss (9.7 ) (13.8 ) (2.0 ) (3.1 ) Consolidated Net Operating Income (Loss) 61.5 (16.4 ) 44.4 (20.4 ) Net Income (Loss) From: Net Realized Gains on Sales of Investments 29.3 15.6 5.3 7.5 Net Impairment Losses Recognized in Earnings (6.8 ) (15.6 ) (1.9 ) (5.4 ) Income (Loss) from Continuing Operations $ 84.0 $ (16.4 ) $ 47.8 $ (18.3 )

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2017
Fair Value Disclosures [Abstract]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Table Text Block]	The valuation of assets and liabilities measured at fair value in the Company’s Condensed Consolidated Balance Sheet at September 30, 2017 is summarized below. Fair Value Measurements (Dollars in Millions) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Measured at Net Asset Value Total Fair Value Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 117.1 $ 242.0 $ — $ — $ 359.1 States and Political Subdivisions — 1,721.6 1.4 — 1,723.0 Foreign Governments — 3.3 — — 3.3 Corporate Securities: Bonds and Notes — 2,645.7 387.4 — 3,033.1 Redeemable Preferred Stocks — — 0.1 — 0.1 Collateralized Loan Obligations — 29.6 93.5 — 123.1 Other Mortgage- and Asset-backed — 1.1 — — 1.1 Total Investments in Fixed Maturities 117.1 4,643.3 482.4 — 5,242.8 Equity Securities: Preferred Stocks: Finance, Insurance and Real Estate — 58.6 — — 58.6 Other Industries — 12.2 12.4 — 24.6 Common Stocks: Finance, Insurance and Real Estate 7.2 — — — 7.2 Other Industries 0.6 0.5 12.7 — 13.8 Other Equity Interests: Exchange Traded Funds 205.0 — — — 205.0 Limited Liability Companies and Limited Partnerships — — 34.1 168.8 202.9 Total Investments in Equity Securities 212.8 71.3 59.2 168.8 512.1 Fair Value Option Investments: Limited Liability Companies and Limited Partnerships Hedge Funds — — — 77.1 77.1 Other Investments: Trading Securities 6.3 — — — 6.3 Other Liabilities: Derivative Instrument Classified as Cash Flow Hedge — (0.7 ) — — (0.7 ) Total $ 336.2 $ 4,713.9 $ 541.6 $ 245.9 $ 5,837.6 At September 30, 2017 , the Company had unfunded commitments to invest an additional $133.0 million in certain limited liability investment companies and limited partnerships that will be included in Other Equity Interests if funded. Note 11 - Fair Value Measurements (continued) The valuation of assets measured at fair value in the Company’s Condensed Consolidated Balance Sheet at December 31, 2016 is summarized below. Fair Value Measurements (Dollars in Millions) Quoted Prices in Active Markets for Identical Assets (Level 1) Significant Other Observable Inputs (Level 2) Significant Unobservable Inputs (Level 3) Measured at Net Asset Value Total Fair Value Fixed Maturities: U.S. Government and Government Agencies and Authorities $ 119.5 $ 216.8 $ — $ — $ 336.3 States and Political Subdivisions — 1,711.1 3.8 — 1,714.9 Foreign Governments — 3.4 — — 3.4 Corporate Securities: Bonds and Notes — 2,541.6 403.2 — 2,944.8 Redeemable Preferred Stocks — — 0.6 — 0.6 Collateralized Loan Obligations — 19.3 103.5 — 122.8 Other Mortgage- and Asset-backed — 2.1 — — 2.1 Total Investments in Fixed Maturities 119.5 4,494.3 511.1 — 5,124.9 Equity Securities: Preferred Stocks: Finance, Insurance and Real Estate — 59.6 — — 59.6 Other Industries — 11.4 11.5 — 22.9 Common Stocks: Finance, Insurance and Real Estate 26.4 — 7.1 — 33.5 Other Industries 0.4 0.2 11.1 — 11.7 Other Equity Interests: Exchange Traded Funds 144.4 — — — 144.4 Limited Liability Companies and Limited Partnerships — — 40.9 168.7 209.6 Total Investments in Equity Securities 171.2 71.2 70.6 168.7 481.7 Fair Value Option Investments: Limited Liability Companies and Limited Partnership Hedge Funds — — — 111.4 111.4 Other Investments: Trading Securities 5.3 — — — 5.3 Other Assets: Derivative Instrument Classified as Cash Flow Hedge — 1.6 — — 1.6 Total $ 296.0 $ 4,567.1 $ 581.7 $ 280.1 $ 5,724.9
Fair Value Inputs, Assets, Quantitative Information [Table Text Block]	The table below presents quantitative information about the significant unobservable inputs utilized by the Company in determining fair values for fixed maturity investments in corporate securities classified as Level 3 at September 30, 2017 . (Dollars in Millions) Unobservable Input Total Fair Value Range of Unobservable Inputs Weighted-average Yield Investment-grade Market Yield $ 93.0 2.4 % - 6.4 % 3.6 % Non-investment-grade: Senior Debt Market Yield 161.1 4.1 - 14.9 9.9 Junior Debt Market Yield 119.2 6.6 - 27.2 13.1 Collateralized Loan Obligations Market Yield 93.5 4.0 - 9.3 7.0 Other Various 15.6 Total Level 3 Fixed Maturity Investments in Corporate Securities $ 482.4 Note 11 - Fair Value Measurements (continued) The table below presents quantitative information about the significant unobservable inputs utilized by the Company in determining fair values for fixed maturity investments in corporate securities classified as Level 3 at December 31, 2016 . (Dollars in Millions) Unobservable Input Total Fair Value Range of Unobservable Inputs Weighted-average Yield Investment-grade Market Yield $ 106.1 2.7 % - 5.1 % 3.8 % Non-investment-grade: Senior Debt Market Yield 142.2 4.8 - 14.0 9.6 Junior Debt Market Yield 143.3 9.5 - 20.0 13.0 Collateralized Loan Obligations Market Yield 103.5 3.7 - 9.9 6.3 Other Debt Various 16.0 Total Level 3 Fixed Maturity Investments in Corporate Securities $ 511.1
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Table Text Block]	Information by security type pertaining to the changes in the fair value of the Company’s investments classified as Level 3 for the nine months ended September 30, 2017 is presented below. Fixed Maturities Equity Securities (Dollars in Millions) Corporate Bonds and Notes States and Political Sub-divisions Redeemable Preferred Stocks Collateralized Loan Obligations Preferred and Common Stocks Other Equity Interests Total Balance at Beginning of Period $ 403.2 $ 3.8 $ 0.6 $ 103.5 $ 29.7 $ 40.9 $ 581.7 Total Gains (Losses): Included in Condensed Consolidated Statement of Operations (4.7 ) (1.2 ) 0.1 1.4 1.7 3.7 1.0 Included in Other Comprehensive Income (Loss) 4.6 — (0.1 ) 1.7 0.9 (6.3 ) 0.8 Purchases 120.4 — — 22.7 3.2 2.9 149.2 Settlements (75.5 ) (2.6 ) (0.5 ) (18.0 ) — — (96.6 ) Sales (32.0 ) — — (11.0 ) (6.9 ) (7.1 ) (57.0 ) Transfers into Level 3 — 1.4 — 5.0 — — 6.4 Transfers out of Level 3 (28.6 ) — — (11.8 ) (3.5 ) — (43.9 ) Balance at End of Period $ 387.4 $ 1.4 $ 0.1 $ 93.5 $ 25.1 $ 34.1 $ 541.6 Note 11 - Fair Value Measurements (continued) Information by security type pertaining to the changes in the fair value of the Company’s investments classified as Level 3 for the three months ended September 30, 2017 is presented below. Fixed Maturities Equity Securities (Dollars in Millions) Corporate Bonds and Notes States and Political Sub- divisions Redeemable Preferred Stocks Collateralized Loan Obligations Preferred and Common Stocks Other Equity Interests Total Balance at Beginning of Period $ 396.1 $ — $ 0.1 $ 95.4 $ 22.8 $ 32.2 $ 546.6 Total Gains (Losses): Included in Condensed Consolidated Statement of Operations (0.8 ) — — 0.5 0.4 0.3 0.4 Included in Other Comprehensive Income (Loss) 1.8 — — — 2.4 0.4 4.6 Purchases 40.4 — — 6.3 — 1.5 48.2 Settlements (31.2 ) — — (5.5 ) — — (36.7 ) Sales (3.7 ) — — (4.3 ) (0.5 ) (0.3 ) (8.8 ) Transfers into Level 3 — 1.4 — 5.0 — — 6.4 Transfers out of Level 3 (15.2 ) — — (3.9 ) — — (19.1 ) Balance at End of Period $ 387.4 $ 1.4 $ 0.1 $ 93.5 $ 25.1 $ 34.1 $ 541.6 The Company’s policy is to recognize transfers between levels as of the end of the reporting period. There were no transfers between levels 1 and 2 for the nine and three months ended September 30, 2017 . Transfers out of Level 3 were $43.9 million for the nine months ended September 30, 2017 , of which $3.5 million was transferred into Level 1 due to an issuer’s initial public offering of the security and $40.4 million was transferred into Level 2 due to changes in the availability of market observable inputs. Transfers out of Level 3 for the three months ended September 30, 2017 were due to changes in the availability of market observable inputs. Note 11 - Fair Value Measurements (continued) Information by security type pertaining to the changes in the fair value of the Company’s investments classified as Level 3 for the nine months ended September 30, 2016 is presented below. Fixed Maturities Equity Securities (Dollars in Millions) Corporate Bonds and Notes States and Political Sub- divisions Redeemable Preferred Stocks Collateralized Loan Obligations Other Mortgage- and Asset- backed Preferred and Common Stocks Other Equity Interests Total Balance at Beginning of Period $ 436.3 $ — $ 3.8 $ 87.3 $ 3.8 $ 30.0 $ 45.6 $ 606.8 Total Gains (Losses): Included in Condensed Consolidated Statement of Operations (15.8 ) — — (0.2 ) 0.4 0.5 (0.7 ) (15.8 ) Included in Other Comprehensive Income (Loss) 2.4 — — 3.0 (0.4 ) 3.5 (3.4 ) 5.1 Purchases 148.3 — — 33.2 — 0.2 2.1 183.8 Settlements (34.9 ) — (2.9 ) — (3.0 ) — — (40.8 ) Sales (79.3 ) — — (1.9 ) — (3.2 ) (4.6 ) (89.0 ) Transfers into Level 3 — 4.1 — — — — — 4.1 Transfers out of Level 3 (15.0 ) — — (10.1 ) (0.8 ) — — (25.9 ) Balance at End of Period $ 442.0 $ 4.1 $ 0.9 $ 111.3 $ — $ 31.0 $ 39.0 $ 628.3 Information by security type pertaining to the changes in the fair value of the Company’s investments classified as Level 3 for the three months ended September 30, 2016 is presented below. Fixed Maturities Equity Securities (Dollars in Millions) Corporate Bonds and Notes States and Political Sub- divisions Redeemable Preferred Stocks Collateralized Loan Obligations Other Mortgage- and Asset- backed Preferred and Common Stocks Other Equity Interests Total Balance at Beginning of Period $ 459.4 $ — $ 2.9 $ 102.2 $ 3.7 $ 31.4 $ 47.2 $ 646.8 Total Gains (Losses): Included in Condensed Consolidated Statement of Operations (7.0 ) — — 0.1 0.4 1.4 — (5.1 ) Included in Other Comprehensive Income (Loss) (0.9 ) — 0.4 5.2 (0.4 ) 1.0 (6.2 ) (0.9 ) Purchases 60.1 — — 13.9 — 0.1 0.1 74.2 Settlements (20.6 ) — (2.4 ) — (2.9 ) — — (25.9 ) Sales (34.0 ) — — — — (2.9 ) (2.1 ) (39.0 ) Transfers into Level 3 — 4.1 — — — — — 4.1 Transfers out of Level 3 (15.0 ) — — (10.1 ) (0.8 ) — — (25.9 ) Balance at End of Period $ 442.0 $ 4.1 $ 0.9 $ 111.3 $ — $ 31.0 $ 39.0 $ 628.3 The Company’s policy is to recognize transfers between levels as of the end of the reporting period. There were no transfers between levels 1 and 2 or Levels 1 and 3 for the nine and three months ended September 30, 2016 . Transfers into or out of Level 3 for the nine and three months ended September 30, 2016 were due to changes in the availability of market observable inputs. Note 11 - Fair Value Measurements (continued) The fair value of Debt is estimated using quoted prices for similar liabilities in markets that are not active. The inputs used in the valuation are considered Level 2 measurements. The fair value of Short-term Investments is estimated using inputs that are considered either Level 1 or Level 2 measurements.

Basis of Presentation Narrative

Basis of Presentation Narrative (Details) $ in Millions	Jan. 01, 2017USD ($)
Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Cumulative Effect on Retained Earnings, Net of Tax	$ 0.5

Investments - Schedule of Inves

Investments - Schedule of Investments (Details) - USD ($)	Sep. 30, 2017	Dec. 31, 2016
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	$ 4,876,700,000	$ 4,846,800,000
Fixed Maturities at Fair Value (Amortized Cost: 2017 - $4,876.7; 2016 - $4,846.8)	5,242,800,000	5,124,900,000
Available for sale Securities, Equity Securities, Cost	469,100,000	434,400,000
Available for sale Securities, Equity Securities, Fair Value	512,100,000	481,700,000
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Due in One Year or Less - Amortized Cost	188,300,000
Due in One Year or Less - Fair Value	190,800,000
Due after One Year to Five Years - Amortized Cost	785,900,000
Due after One Year to Five Years - Fair Value	814,300,000
Due after Five Years to Ten Years - Amortized Cost	1,632,700,000
Due after Five Years to Ten Years - Fair Value	1,710,900,000
Due after Ten Years - Amortized Cost	1,988,100,000
Due after Ten Years - Fair Value	2,234,300,000
Asset-backed Securities Not Due in a Single Maturity Date - Amortized Cost	281,700,000
Asset-backed Securities Not Due in a Single Maturity Date - Fair Value	292,500,000
Other Receivables	182,400,000	198,600,000
Other Liabilities	457,400,000	453,200,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	580,200,000	1,273,900,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(13,800,000)	(40,500,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	201,700,000	190,300,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(11,400,000)	(11,600,000)
Total, Fair Value	781,900,000	1,464,200,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments	(25,200,000)	(52,100,000)
Available-for-sale-Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Securities that have had Recognized Credit Losses in Earnings, Aggregate Losses	0	100,000
Available For Sale Securities, Continuous Unrealized Loss Position, Credit Losses Recognized Related to Securities in An Unrealized Loss Position, In a Position of 12 Months or Longer	0	0
US Government and Government Agencies and Authorities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	342,800,000	321,200,000
Available-for-sale Debt Securities Gross Unrealized Gain	21,200,000	22,300,000
Available-for-sale Debt Securities, Gross Unrealized Loss	(4,900,000)	(7,200,000)
Fixed Maturities at Fair Value (Amortized Cost: 2017 - $4,876.7; 2016 - $4,846.8)	359,100,000	336,300,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	67,400,000	117,700,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(2,100,000)	(7,200,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	41,200,000	1,100,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2,800,000)	0
Total, Fair Value	108,600,000	118,800,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments	(4,900,000)	(7,200,000)
Government National Mortgage Association Certificates and Obligations (GNMA) [Member]
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Asset-backed Securities Not Due in a Single Maturity Date - Fair Value	152,100,000
Federal National Mortgage Association Certificates and Obligations (FNMA) [Member]
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Asset-backed Securities Not Due in a Single Maturity Date - Fair Value	11,200,000
Federal Home Loan Mortgage Corporation Certificates and Obligations (FHLMC) [Member]
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Asset-backed Securities Not Due in a Single Maturity Date - Fair Value	4,100,000
States and Political Subdivisions [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	1,615,000,000	1,640,600,000
Available-for-sale Debt Securities Gross Unrealized Gain	110,800,000	88,400,000
Available-for-sale Debt Securities, Gross Unrealized Loss	(2,800,000)	(14,100,000)
Fixed Maturities at Fair Value (Amortized Cost: 2017 - $4,876.7; 2016 - $4,846.8)	1,723,000,000	1,714,900,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	169,300,000	432,700,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(2,100,000)	(14,100,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	28,900,000	300,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(700,000)	0
Total, Fair Value	198,200,000	433,000,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments	(2,800,000)	(14,100,000)
Foreign Government Debt Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	3,100,000	3,500,000
Available-for-sale Debt Securities Gross Unrealized Gain	200,000	0
Available-for-sale Debt Securities, Gross Unrealized Loss	0	(100,000)
Fixed Maturities at Fair Value (Amortized Cost: 2017 - $4,876.7; 2016 - $4,846.8)	3,300,000	3,400,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		2,100,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		(100,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		0
Total, Fair Value		2,100,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments		(100,000)
Corporate Bonds and Notes [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	2,796,900,000	2,758,900,000
Available-for-sale Debt Securities Gross Unrealized Gain	247,200,000	209,900,000
Available-for-sale Debt Securities, Gross Unrealized Loss	(11,000,000)	(24,000,000)
Fixed Maturities at Fair Value (Amortized Cost: 2017 - $4,876.7; 2016 - $4,846.8)	3,033,100,000	2,944,800,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	292,700,000	663,300,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(6,700,000)	(16,600,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	96,200,000	107,300,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(4,300,000)	(7,400,000)
Total, Fair Value	388,900,000	770,600,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments	(11,000,000)	(24,000,000)
Redeemable Preferred Stocks [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	100,000	500,000
Available-for-sale Debt Securities Gross Unrealized Gain	0	100,000
Available-for-sale Debt Securities, Gross Unrealized Loss	0	0
Fixed Maturities at Fair Value (Amortized Cost: 2017 - $4,876.7; 2016 - $4,846.8)	100,000	600,000
Collateralized Loan Obligations [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	118,400,000	121,200,000
Available-for-sale Debt Securities Gross Unrealized Gain	4,700,000	2,700,000
Available-for-sale Debt Securities, Gross Unrealized Loss	0	(1,100,000)
Fixed Maturities at Fair Value (Amortized Cost: 2017 - $4,876.7; 2016 - $4,846.8)	123,100,000	122,800,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	2,000,000	19,900,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	(700,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	2,400,000	21,400,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	(400,000)
Total, Fair Value	4,400,000	41,300,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments	0	(1,100,000)
Other Mortgage- and Asset-backed [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	400,000	900,000
Available-for-sale Debt Securities Gross Unrealized Gain	700,000	1,200,000
Available-for-sale Debt Securities, Gross Unrealized Loss	0	0
Fixed Maturities at Fair Value (Amortized Cost: 2017 - $4,876.7; 2016 - $4,846.8)	1,100,000	2,100,000
Fixed Maturities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available-for-sale Debt Securities, Amortized Cost Basis	4,876,700,000	4,846,800,000
Available-for-sale Debt Securities Gross Unrealized Gain	384,800,000	324,600,000
Available-for-sale Debt Securities, Gross Unrealized Loss	(18,700,000)	(46,500,000)
Fixed Maturities at Fair Value (Amortized Cost: 2017 - $4,876.7; 2016 - $4,846.8)	5,242,800,000	5,124,900,000
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Other Receivables	0	2,700,000
Other Liabilities	4,700,000	100,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	531,400,000	1,235,700,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(10,900,000)	(38,700,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	168,700,000	130,100,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(7,800,000)	(7,800,000)
Total, Fair Value	700,100,000	1,365,800,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments	(18,700,000)	(46,500,000)
Fixed Maturities [Member] | External Credit Rating, Investment Grade [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments	(12,000,000)	(33,800,000)
Fixed Maturities [Member] | External Credit Rating, Non Investment Grade [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments	$ (6,700,000)	$ (12,700,000)
Percentage of Unrealized Loss Position to Amortized Cost Basis of Available for Sale Security Average	4.00%	5.00%
Other Non-Governmental Issuers [Member]
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Asset-backed Securities Not Due in a Single Maturity Date - Fair Value	$ 125,100,000
Equity Securities [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale Securities, Equity Securities, Cost	469,100,000	$ 434,400,000
Available-for-sale Equity Securities, Gross Unrealized Gain	49,500,000	52,900,000
Available-for-sale Equity Securities, Gross Unrealized Loss	(6,500,000)	(5,600,000)
Available for sale Securities, Equity Securities, Fair Value	512,100,000	481,700,000
Available-for-sale Securities, Debt Maturities, Fair Value [Abstract]
Other Receivables	0	200,000
Other Liabilities	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	48,800,000	38,200,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(2,900,000)	(1,800,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	33,000,000	60,200,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(3,600,000)	(3,800,000)
Total, Fair Value	81,800,000	98,400,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments	(6,500,000)	(5,600,000)
Preferred Stock [Member] | Finance, Insurance and Real Estate [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale Securities, Equity Securities, Cost	53,600,000	58,100,000
Available-for-sale Equity Securities, Gross Unrealized Gain	5,000,000	2,300,000
Available-for-sale Equity Securities, Gross Unrealized Loss	0	(800,000)
Available for sale Securities, Equity Securities, Fair Value	58,600,000	59,600,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	0	15,600,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	(500,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	200,000	7,300,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	(300,000)
Total, Fair Value	200,000	22,900,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments	0	(800,000)
Preferred Stock [Member] | All Industries Other than Finance, Insurance and Real Estate [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale Securities, Equity Securities, Cost	18,400,000	18,500,000
Available-for-sale Equity Securities, Gross Unrealized Gain	6,200,000	4,900,000
Available-for-sale Equity Securities, Gross Unrealized Loss	0	(500,000)
Available for sale Securities, Equity Securities, Fair Value	24,600,000	22,900,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	100,000	5,300,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	(500,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	200,000	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Total, Fair Value	300,000	5,300,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments	0	(500,000)
Common Stocks [Member] | Finance, Insurance and Real Estate [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale Securities, Equity Securities, Cost	6,700,000	31,200,000
Available-for-sale Equity Securities, Gross Unrealized Gain	1,300,000	2,300,000
Available-for-sale Equity Securities, Gross Unrealized Loss	(800,000)	0
Available for sale Securities, Equity Securities, Fair Value	7,200,000	33,500,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	2,200,000	2,800,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(800,000)	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Total, Fair Value	2,200,000	2,800,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments	(800,000)	0
Common Stocks [Member] | All Industries Other than Finance, Insurance and Real Estate [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale Securities, Equity Securities, Cost	8,900,000	7,200,000
Available-for-sale Equity Securities, Gross Unrealized Gain	5,100,000	4,600,000
Available-for-sale Equity Securities, Gross Unrealized Loss	(200,000)	(100,000)
Available for sale Securities, Equity Securities, Fair Value	13,800,000	11,700,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	200,000	600,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(200,000)	(100,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	500,000	500,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Total, Fair Value	700,000	1,100,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments	(200,000)	(100,000)
Exchange Traded Funds [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale Securities, Equity Securities, Cost	196,700,000	136,100,000
Available-for-sale Equity Securities, Gross Unrealized Gain	8,300,000	9,600,000
Available-for-sale Equity Securities, Gross Unrealized Loss	0	(1,300,000)
Available for sale Securities, Equity Securities, Fair Value	205,000,000	144,400,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss		0
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value		18,600,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss		(1,300,000)
Total, Fair Value		18,600,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments		(1,300,000)
Limited Liability Companies and Limited Partnerships [Member]
Schedule of Available-for-sale Securities [Line Items]
Available for sale Securities, Equity Securities, Cost	184,800,000	183,300,000
Available-for-sale Equity Securities, Gross Unrealized Gain	23,600,000	29,200,000
Available-for-sale Equity Securities, Gross Unrealized Loss	(5,500,000)	(2,900,000)
Available for sale Securities, Equity Securities, Fair Value	202,900,000	209,600,000
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	46,300,000	13,900,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,900,000)	(700,000)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	32,100,000	33,800,000
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(3,600,000)	(2,200,000)
Total, Fair Value	78,400,000	47,700,000
Available-for-sale Securities, Continuous Unrealized Loss Position, Aggregate Losses Accumulated in Investments	$ (5,500,000)	$ (2,900,000)

Investments - Schedule of Other

Investments - Schedule of Other Than Temporary Impairment (Details) - Fixed Maturities [Member] - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Cumulative Balance of Pre-tax Credit Losses Recognized in Retained Earnings at Beginning of Period	$ 2.4	$ 4.2	$ 1.4	$ 5.1
Pre-tax Credit Losses on Fixed Maturities without Pre-tax Credit Losses Included in Cumulative Balance at Beginning of Period	0	0	1.2	2.7
From Status of Credit Loss to Status of Intent-to-sell or Required-to-sell	0	(2.7)	0	(6.3)
Other than Temporary Impairment, Credit Losses Recognized in Earnings, Reductions, Securities Sold	(0.1)	0	(0.3)	0
Cumulative Balance of Pre-tax Credit Losses Recognized in Retained Earnings at End of Period	$ 2.3	$ 1.5	$ 2.3	$ 1.5

Investments - Net Realized Gain

Investments - Net Realized Gains on Sales of Investments (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fixed Maturities [Member]
Net Investment Income [Line Items]
Realized Gains	$ 2.4	$ 2.7	$ 7.3	$ 14.1
Realized Losses	0	(0.8)	(0.4)	(1.1)
Equity Securities [Member]
Net Investment Income [Line Items]
Realized Gains	3.9	9.3	31.1	9.8
Realized Losses	$ 0	$ 0	$ 0	$ (0.1)

Investments - Equity Method Lim

Investments - Equity Method Limited Liability Investments (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Equity Method Limited Liability Investments, Maximum Exposure to Loss	$ 160.1	$ 175.9
Outstanding Commitments to Fund Equity Method Limited Liability Investments	$ 82.5

Investments - Schedule of Oth33

Investments - Schedule of Other Investments (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Investments, Debt and Equity Securities [Abstract]
Loans to Policyholders at Unpaid Principal	$ 295.5	$ 294.2
Real Estate at Depreciated Cost	118.1	140.2
Trading Securities at Fair Value	6.3	5.3
Other	0.1	0.2
Total	$ 420	$ 439.9

Investments Investments - Net I

Investments Investments - Net Investment Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Net Investment Income [Line Items]
Investment Income, Equity Method Limited Liability Investments	$ 11.1	$ 5.2	$ 21.9	$ 3.7
Investment Income, Fair Value Option Investments	0.5	(1.4)	1	(3.9)
Investment Income, Limited Liability Investments Included in Equity Securities	5.9	5.7	18.7	16.6
Investment Income, Alternative Investments	17.5	9.5	41.6	16.4
Investment Income, Real Estate	2.6	3	8.3	8.9
Gross Investment Income	90	82.2	257.8	232
Investment Income, Investment Expense	4.1	4.5	13.2	13.6
Net Investment Income	85.9	77.7	244.6	218.4
Fixed Maturities [Member]
Net Investment Income [Line Items]
Interest and Dividend Income, Operating	61.8	61.4	184	181.2
Equity Securities [Member]
Net Investment Income [Line Items]
Interest and Dividend Income, Operating	2.6	2.7	7	9
Short-term Investments [Member]
Net Investment Income [Line Items]
Interest and Dividend Income, Operating	0.5	0.2	1	0.4
Policy Loans [Member]
Net Investment Income [Line Items]
Interest and Dividend Income, Operating	4.9	5.4	15.7	16.1
Other Investment [Member]
Net Investment Income [Line Items]
Interest and Dividend Income, Operating	0.1	0	0.2	0
Real Estate Investment [Member]
Net Investment Income [Line Items]
Investment Income, Investment Expense	2.6	2.9	7.7	8.4
Other Investment [Member]
Net Investment Income [Line Items]
Investment Income, Investment Expense	$ 1.5	$ 1.6	$ 5.5	$ 5.2

Property and Casualty Insuran35

Property and Casualty Insurance Reserves (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Property and Casulty Insurance Reserve - Gross of Reinsurance at Beginning of Year	$ 931.4	$ 862.8
Property and Casualty Insurance Reserves - Net of Reinsurance and Indemnification at Beginning of Year	881.2	810.8
Incurred Losses and LAE Related to Prior Years	19.7	(21)
Total Incurred Losses and LAE	1,091.7	1,010.1
Paid Losses and LAE Related to Prior Years	446.6	366.1
Total Paid Losses and LAE	1,047.3	949.3
Property and Casualty Insurance Reserves - Net of Reinsurance and Indemnification at End of Period	925.6	871.6
Property and Casualty Insurance Reserves - Gross of Reinsurance and Indemnification at End of Period	968.5	920.7
Continuing Operations [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Current Year	1,072	1,031.1
Incurred Losses and LAE Related to Prior Years	19.7	(17.7)
Paid Losses and LAE Related to Current Year	600.7	583.2
Paid Losses and LAE Related to Prior Years	443.6	360.8
Discontinued Operations [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	0	(3.3)
Paid Losses and LAE Related to Prior Years	3	5.3
Personal Automobile [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	18.1	7.3
Homeowners [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	(0.1)	(18.1)
Other Personal Lines [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	(0.3)	(6.9)
Property and Casualty, Personal Insurance Product Line [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	17.7	(17.7)
Property and Casualty, Commercial Insurance Product Line [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	2	(3.3)
Property and Casualty, Commercial Insurance Product Line [Member] | Continuing Operations [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years		0
Property and Casualty, Commercial Insurance Product Line [Member] | Discontinued Operations [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years		(3.3)
Catastrophe [Member] | Homeowners [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Incurred Losses and LAE Related to Prior Years	(3.2)	(14.3)
Property and Casualty Insurance [Member]
Liability for Unpaid Claims and Claims Adjustment Expense [Roll Forward]
Less Reinsurance and Indemnification Recoverables at Beginning of Year	50.2	52
Plus Reinsurance and Indemnification Recoverables at End of Period	$ 42.9	$ 49.1

Debt (Details)

Debt (Details) - USD ($)	Jun. 12, 2017	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016	Feb. 24, 2015
Debt Instrument [Line Items]
Long-term Debt		$ 592,200,000		$ 592,200,000		$ 751,600,000
Loss on Cash Flow Hedge Ineffectiveness				1,100,000
Interest Expense, Other		100,000
Cash Flow Hedge Derivative Instrument Assets at Fair Value						1,600,000
Cash Flow Hedge Gain (Loss) to be Reclassified within Twelve Months				(400,000)
Interest Expense		7,800,000	$ 11,100,000	26,900,000	$ 33,400,000
Interest Paid		12,700,000	$ 8,500,000	31,800,000	$ 30,500,000
Senior Notes [Member] | Senior Notes, 6 Percent Due May 15, 2017 [Member]
Debt Instrument [Line Items]
Long-term Debt		0		0		359,800,000
Senior Notes [Member] | Senior Notes, 4.35 Percent Due February 15, 2025 [Member]
Debt Instrument [Line Items]
Long-term Debt		448,100,000		448,100,000		247,700,000
Debt Instrument, Face Amount	$ 200,000,000						$ 250,000,000
Debt Instrument, Interest Rate, Stated Percentage							4.35%
Proceeds from Debt, Net of Issuance Costs	$ 200,200,000
Debt Instrument, Interest Rate, Effective Percentage	4.16%
Subordinated Debt [Member] | Subordinated Debenture, 7.375 Percent Due 2054 [Member]
Debt Instrument [Line Items]
Long-term Debt		144,100,000		144,100,000		144,100,000
Notes Payable under Revolving Credit Agreement [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Amount Outstanding		0		0		0
Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		225,000,000		225,000,000		225,000,000
Federal Home Loan Bank of Dallas [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances		0		0		0
Federal Home Loan Bank of Chicago [Member]
Debt Instrument [Line Items]
Federal Home Loan Bank, Advances, Branch of FHLB Bank, Amount of Advances		0		0		$ 0
Cash Flow Hedging [Member] | Designated as Hedging Instrument [Member]
Debt Instrument [Line Items]
Effective portion of the loss on the derivative instrument upon discontinuance		$ 4,500,000		4,500,000
Interest Expense, Other				$ 100,000

Income (Loss) from Continuing37

Income (Loss) from Continuing Operations Per Unrestricted Share (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Schedule of Basic and Diluted Earnings Per Share [Line Items]
Income (Loss) from Continuing Operations	$ 47.8	$ (18.3)	$ 84	$ (16.4)
Dilutive Effect on Income of Equity-based Compensation Equivalent Shares	0	0	0	0
Diluted Income (Loss) from Continuing Operations Attributed to Unrestricted Shares	$ 47.4	$ (18.2)	$ 83.4	$ (16.1)
Weighted-Average Unrestricted Shares Outstanding (shares)	51,366,800	51,122,500	51,308,700	51,140,600
Equity-based Compensation Equivalent Shares (shares)	199,600	0	171,600	0
Weighted-Average Unrestricted Shares and Equivalent Shares Outstanding Assuming Dilution (shares)	51,566,400	51,122,500	51,480,300	51,140,600
Basic Income (Loss) from Continuing Operations Per Unrestricted Share	$ 0.92	$ (0.36)	$ 1.63	$ (0.31)
Diluted Income (Loss) from Continuing Operations Per Unrestricted Share	$ 0.92	$ (0.36)	$ 1.62	$ (0.31)
Unrestricted Shares [Member]
Schedule of Basic and Diluted Earnings Per Share [Line Items]
Income (Loss) from Continuing Operations	$ 47.4	$ (18.2)	$ 83.4	$ (16.1)
Participating Awards [Member]
Schedule of Basic and Diluted Earnings Per Share [Line Items]
Income (Loss) from Continuing Operations	$ 0.4	$ (0.1)	$ 0.6	$ (0.3)

Income (Loss) from Continuing38

Income (Loss) from Continuing Operations Per Unrestricted Share (Antidilutive) (Details) - shares	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	382,100	1,009,500	459,700	1,195,200
Stock Options [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	382,100	1,009,500	459,700	1,195,200

Other Comprehensive Income (L39

Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income - Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Other Comprehensive Income (Loss) Before Income Taxes:
Unrealized Holding Gains Arising During the Period Before Reclassification Adjustment	$ 19.2	$ (5.4)	$ 110.5	$ 215.9
Reclassification Adjustment for Amounts Included in Net Income	(3.6)	(2.9)	(27.7)	1.3
Unrealized Holding Gains	15.6	(8.3)	82.8	217.2
Foreign Currency Translation Adjustments Arising During the Period Before Reclassification Adjustment	0.1	0	0.9	0
Reclassification Adjustment for Amounts Included in Net Income	0	0	0	0
Foreign Currency Translation Adjustments	0.1	0	0.9	0
Net Unrecognized Postretirement Benefit Costs Arising During the Period	0	0	0	(19.5)
Curtailment Cost Recognized	0	0	0	1
Amortization of Net Unrecognized Postretirement Benefit Costs	(0.1)	0.4	(0.4)	4.7
Total Reclassification Adjustments for Amounts Included in Net Income	(0.1)	0.4	(0.4)	5.7
Net Unrecognized Postretirement Benefit Costs	(0.1)	0.4	(0.4)	(13.8)
Loss on Cash Flow Hedges During the Period Before Reclassification Adjustment	(0.3)	0	(7.9)	0
Reclassification Adjustment for Amounts Included in Net Income	0.2	0	1.3	0
Loss on Cash Flow Hedges	(0.1)	0	(6.6)	0
Other Comprehensive Income (Loss) Before Income Taxes	15.5	(7.9)	76.7	203.4
Other Comprehensive Income Tax Benefit (Expense):
Unrealized Holding Gains and Losses Arising During the Period Before Reclassification Adjustment	(7)	2	(39.1)	(76)
Reclassification Adjustment for Amounts Included in Net Income	1.3	1.1	9.7	(0.4)
Unrealized Holding Gains	(5.7)	3.1	(29.4)	(76.4)
Foreign Currency Translation Adjustments Arising During the Period Before Reclassification Adjustment	0.1	0	0.4	0
Reclassification Adjustment for Amounts Included in Net Income	0	0	0	0
Foreign Currency Translation Adjustments	(0.1)	0	(0.4)	0
Net Unrecognized Postretirement Benefit Costs Arising During the Period	0	0	0	6.9
Curtailment Loss Recognized	0	0	0	(0.4)
Amortization of Net Unrecognized Postretirement Benefit Costs	0.1	(0.2)	0.2	(1.7)
Total Reclassification Adjustments for Amounts Included in Net Income	0.1	(0.2)	0.2	(2.1)
Net Unrecognized Postretirement Benefit Costs	0.1	(0.2)	0.2	4.8
Loss on Cash Flow Hedges During the Period Before Reclassification Adjustment	0	0	2.7	0
Reclassification Adjustment for Amounts Included in Net Income	0	0	(0.4)	0
Loss on Cash Flow Hedges	0	0	2.3	0
Other Comprehensive Income Tax Benefit (Expense)	$ 5.7	$ (2.9)	$ 27.3	$ 71.6

Other Comprehensive Income (L40

Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income - Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Statement of Comprehensive Income [Abstract]
Available for Sale Fixed Maturities with Portion of OTTI Recognized in Earnings	$ (0.1)	$ 0.1
Other Net Unrealized Gains on Investments	265.3	211.7
Foreign Currency Translation Adjustments, Net of Income Taxes	(0.4)	(0.9)
Net Unrecognized Postretirement Benefit Costs, Net of Income Taxes	(75.1)	(74.9)
Accumulated Other Comprehensive Income (Loss), Cumulative Changes in Net Gain (Loss) from Cash Flow Hedges, Effect Net of Tax	(3.3)	1
Accumulated Other Comprehensive Income	$ 186.4	$ 137

Other Comprehensive Income (L41

Other Comprehensive Income (Loss) and Accumulated Other Comprehensive Income - Reclassification out of Accumulated Other Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Net Realized Gains on Sales of Investments	$ 8.1	$ 11.6	$ 45	$ 24
Net Impairment Losses Recognized in Earnings	(2.9)	(8.3)	(10.5)	(24)
Interest and Other Expenses	(18.2)	(22)	(59.1)	(65)
Total Before Income Taxes	68.3	(33.2)	116.9	(37.1)
Income Tax Benefit (Expense)	(20.5)	14.9	(32.9)	20.7
Net Income (Loss)	47.7	(16.3)	84	(14.4)
Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Net Income (Loss)	2.1	1.6	17.3	(4.5)
Accumulated Net Unrealized Investment Gain (Loss) [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Net Realized Gains on Sales of Investments	6.5	11.2	38.2	22.7
Net Impairment Losses Recognized in Earnings	(2.9)	(8.3)	(10.5)	(24)
Total Before Income Taxes	3.6	2.9	27.7	(1.3)
Income Tax Benefit (Expense)	(1.3)	(1.1)	(9.7)	0.4
Net Income (Loss)	2.3	1.8	18	(0.9)
Accumulated Defined Benefit Plans Adjustment [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Interest and Other Expenses	0.1	(0.4)	0.4	(5.7)
Income Tax Benefit (Expense)	(0.1)	0.2	(0.2)	2.1
Net Income (Loss)	0	(0.2)	0.2	(3.6)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] | Reclassification out of Accumulated Other Comprehensive Income [Member]
Reclassification Out of Accumulated Other Comprehensive Income [Line Items]
Interest and Other Expenses	(0.2)	0	(1.3)	0
Income Tax Benefit (Expense)	0	0	0.4	0
Net Income (Loss)	$ (0.2)	$ 0	$ (0.9)	$ 0

Changes in Shareholders' Equi42

Changes in Shareholders' Equity Changes in Shareholders' Equity (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016	Jan. 01, 2017
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Stockholders' Equity Attributable to Parent	$ 2,082.4		$ 2,082.4
Net Income			84
Other Comprehensive Income	9.8	$ (5)	49.4	$ 131.8
Total Comprehensive Income (Loss)	$ 57.5	$ (21.3)	133.4	$ 117.4
Cash Dividends and Dividend Equivalents to Shareholders ($0.72 per share)			(37.1)
Equity-based Compensation Cost			8.7
Equity-based Awards, Net of Shares Exchanged			1.7
Stockholders' Equity Attributable to Parent			$ 1,975.2
Accounting Standards Update 2016-09 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets					$ 0.5

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Dec. 31, 2016
Income Tax Disclosure [Abstract]
Unrecognized Tax Benefit that Would Not Impact Effective Tax Rate, Tax Position with Uncertain Timing of Deductibility	$ 6.2		$ 4.6
Unrecognized Tax Benefits, Interest on Income Taxes Accrued	0.5		$ 0.5
Income Taxes Paid, Net	$ 5.5	$ 10.4

Pension Benefits and Postreti44

Pension Benefits and Postretirement Benefits Other Than Pensions (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)employees	Sep. 30, 2016USD ($)
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Defined Benefit Pension Plan, Number of Participants and Beneficiaries | employees			9,000
Defined Benefit Pension Plans, Number of Active Employees | employees			1,600
Service Cost Earned	$ 0	$ 0	$ 0	$ 4.8
Interest Cost on Projected Benefit Obligation	5.1	4.8	15.4	15.2
Expected Return on Plan Assets	(7.7)	(8.3)	(23.2)	(24.5)
Amortization of Accumulated Net Unrecognized Pension Costs	0.7	0.9	2	5.8
Defined Benefit Plan, Recognized Net Gain (Loss) Due to Curtailments	0	0	0	(0.3)
Total Expense (Benefit) Recognized	(1.9)	(2.6)	$ (5.8)	1
Postretirement Benefits Other than Pensions [Member]
Defined Benefit Plan Disclosure [Line Items]
Other Postretirement Benefit Plan, Number of Retired Employees Covered | employees			475
Other Postretirement Benefit Plan, Number of Active Employees Covered | employees			200
Service Cost Earned	0	0.1	$ 0.1	0.1
Interest Cost on Projected Benefit Obligation	0.1	0.2	0.3	0.6
Amortization of Prior Service Credit	(0.3)	0	(1)	0
Amortization of Accumulated Net Unrecognized Pension Costs	(0.5)	(0.4)	(1.4)	(1.1)
Total Expense (Benefit) Recognized	$ (0.7)	$ (0.1)	$ (2)	$ (0.4)

Business Segments - Earned Prem

Business Segments - Earned Premiums by Product Line (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums, Life	$ 94.5	$ 95.8	$ 285.6	$ 285.7
Earned Premiums, Accident and Health	42	37.6	120.6	111.2
Total Earned Premiums	598.2	558.9	1,744.1	1,658.6
Personal Automobile [Member]
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums, Property and Casualty	353	313.8	1,012.8	927.4
Homeowners [Member]
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums, Property and Casualty	66.7	68.5	199.6	204.2
Other Personal Property and Casualty Insurance [Member]
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums, Property and Casualty	28.9	29.9	87	89.9
Commercial Automobile [Member]
Entity-Wide Information, Revenue from External Customer [Line Items]
Earned Premiums, Property and Casualty	$ 13.1	$ 13.3	$ 38.5	$ 40.2

Business Segments - Segment Inf

Business Segments - Segment Information (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017USD ($)	Sep. 30, 2016USD ($)	Sep. 30, 2017USD ($)segment	Sep. 30, 2016USD ($)
Segment Reporting Information [Line Items]
Number of Operating Segments | segment			2
Earned Premiums	$ 598.2	$ 558.9	$ 1,744.1	$ 1,658.6
Net Investment Income	85.9	77.7	244.6	218.4
Other Income	1	0.8	2.9	2.2
Total Revenues	690.3	640.7	2,026.1	1,879.2
Net Realized Gains on Sales of Investments	8.1	11.6	45	24
Net Impairment Losses Recognized in Earnings	(2.9)	(8.3)	(10.5)	(24)
Segment Operating Profit (Loss)	63.1	(36.5)	82.4	(37.1)
Total Before Income Taxes	68.3	(33.2)	116.9	(37.1)
Segment Net Operating Income (Loss)	44.4	(20.4)	61.5	(16.4)
Income (Loss) from Continuing Operations	47.8	(18.3)	84	(16.4)
Corporate, Non-Segment [Member]
Segment Reporting Information [Line Items]
Segment Operating Profit (Loss)	(3.7)	(6.4)	(15.2)	(23.3)
Segment Net Operating Income (Loss)	(2)	(3.1)	(9.7)	(13.8)
Segment Reconciling Items [Member]
Segment Reporting Information [Line Items]
Other Income	2.1	2.8	8.4	6.7
Net Realized Gains on Sales of Investments	8.1	11.6	45	24
Net Impairment Losses Recognized in Earnings	(2.9)	(8.3)	(10.5)	(24)
Net Realized Gains (Losses) on Sales of Investments, Net of Tax	5.3	7.5	29.3	15.6
Net Impairment Losses Recognized in Earnings, Net of Tax	(1.9)	(5.4)	(6.8)	(15.6)
Operating Segments [Member]
Segment Reporting Information [Line Items]
Total Revenues	683	634.6	1,983.2	1,872.5
Segment Operating Profit (Loss)	66.8	(30.1)	97.6	(13.8)
Income (Loss) from Continuing Operations	46.4	(17.3)	71.2	(2.6)
Operating Segments [Member] | Property and Casualty Insurance [Member]
Segment Reporting Information [Line Items]
Earned Premiums	443.5	406.9	1,283.1	1,205.7
Net Investment Income	27.8	20.4	72.5	52
Other Income	0.4	0.1	0.9	0.4
Total Revenues	471.7	427.4	1,356.5	1,258.1
Segment Operating Profit (Loss)	30.8	15.6	(2.2)	(24.4)
Income (Loss) from Continuing Operations	22.9	12.1	5.7	(9.9)
Operating Segments [Member] | Life and Health Insurance [Member]
Segment Reporting Information [Line Items]
Earned Premiums	154.7	152	461	452.9
Net Investment Income	55.9	54.5	163.8	159.6
Other Income	0.7	0.7	1.9	1.9
Total Revenues	211.3	207.2	626.7	614.4
Segment Operating Profit (Loss)	36	(45.7)	99.8	10.6
Income (Loss) from Continuing Operations	$ 23.5	$ (29.4)	$ 65.5	$ 7.3

Fair Value Measurements - Fair

Fair Value Measurements - Fair Value Inputs (Details) - USD ($) $ in Millions	Sep. 30, 2017	Dec. 31, 2016
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Option Investments, Fair Value Disclosure	$ 77.1	$ 111.4
Trading Securities, Fair Value Disclosure	6.3	5.3
Cash Flow Hedge Derivative Instrument Assets at Fair Value		1.6
Fair Value, Inputs, Level 3 [Member] | Partnership Interest [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share, Unfunded Commitments	133
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading Securities, Fair Value Disclosure	6.3	5.3
Cash Flow Hedge Derivative Instrument Assets at Fair Value		1.6
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	(0.7)
Investments, Fair Value Disclosure	5,837.6	5,724.9
Fair Value, Measurements, Recurring [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	5,242.8	5,124.9
Fair Value, Measurements, Recurring [Member] | US Government and Government Agencies and Authorities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	359.1	336.3
Fair Value, Measurements, Recurring [Member] | States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	1,723	1,714.9
Fair Value, Measurements, Recurring [Member] | Foreign Government Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	3.3	3.4
Fair Value, Measurements, Recurring [Member] | Corporate Bonds and Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	3,033.1	2,944.8
Fair Value, Measurements, Recurring [Member] | Redeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0.1	0.6
Fair Value, Measurements, Recurring [Member] | Collateralized Loan Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	123.1	122.8
Fair Value, Measurements, Recurring [Member] | Other Mortgage- and Asset-backed [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	1.1	2.1
Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	512.1	481.7
Fair Value, Measurements, Recurring [Member] | Exchange Traded Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	205	144.4
Fair Value, Measurements, Recurring [Member] | Partnership Interest [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	202.9	209.6
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading Securities, Fair Value Disclosure	6.3	5.3
Cash Flow Hedge Derivative Instrument Assets at Fair Value		0
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	0
Investments, Fair Value Disclosure	336.2	296
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	117.1	119.5
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Government and Government Agencies and Authorities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	117.1	119.5
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Foreign Government Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Corporate Bonds and Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Redeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Collateralized Loan Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other Mortgage- and Asset-backed [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	212.8	171.2
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Exchange Traded Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	205	144.4
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Partnership Interest [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading Securities, Fair Value Disclosure	0	0
Cash Flow Hedge Derivative Instrument Assets at Fair Value		1.6
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	(0.7)
Investments, Fair Value Disclosure	4,713.9	4,567.1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	4,643.3	4,494.3
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Government and Government Agencies and Authorities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	242	216.8
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	1,721.6	1,711.1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Foreign Government Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	3.3	3.4
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Corporate Bonds and Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	2,645.7	2,541.6
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Redeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Collateralized Loan Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	29.6	19.3
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other Mortgage- and Asset-backed [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	1.1	2.1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	71.3	71.2
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Exchange Traded Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Partnership Interest [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading Securities, Fair Value Disclosure	0	0
Cash Flow Hedge Derivative Instrument Assets at Fair Value		0
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	0
Investments, Fair Value Disclosure	541.6	581.7
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	482.4	511.1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US Government and Government Agencies and Authorities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	1.4	3.8
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Foreign Government Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Corporate Bonds and Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	387.4	403.2
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Redeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0.1	0.6
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Collateralized Loan Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	93.5	103.5
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Mortgage- and Asset-backed [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	59.2	70.6
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Exchange Traded Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Partnership Interest [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	34.1	40.9
Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	58.6	59.6
Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Common Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	7.2	33.5
Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Common Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	7.2	26.4
Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	58.6	59.6
Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Common Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Common Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	7.1
All Industries Other than Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	24.6	22.9
All Industries Other than Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Common Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	13.8	11.7
All Industries Other than Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
All Industries Other than Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Common Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0.6	0.4
All Industries Other than Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	12.2	11.4
All Industries Other than Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Common Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0.5	0.2
All Industries Other than Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	12.4	11.5
All Industries Other than Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Common Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	12.7	11.1
Limited Liability Companies and Limited Partnership Hedge Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Option Investments, Fair Value Disclosure	77.1	111.4
Limited Liability Companies and Limited Partnership Hedge Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Option Investments, Fair Value Disclosure	0	0
Limited Liability Companies and Limited Partnership Hedge Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Option Investments, Fair Value Disclosure	0	0
Limited Liability Companies and Limited Partnership Hedge Funds [Member] | Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Option Investments, Fair Value Disclosure	0	0
Fair Value, Inputs, Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading Securities, Fair Value Disclosure	0	0
Cash Flow Hedge Derivative Instrument Assets at Fair Value		0
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value	0
Investments, Fair Value Disclosure	245.9	280.1
Fair Value, Inputs, Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member] | Fixed Maturities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member] | US Government and Government Agencies and Authorities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member] | States and Political Subdivisions [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member] | Foreign Government Debt Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member] | Corporate Bonds and Notes [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member] | Redeemable Preferred Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member] | Collateralized Loan Obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member] | Other Mortgage- and Asset-backed [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member] | Equity Securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	168.8	168.7
Fair Value, Inputs, Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member] | Exchange Traded Funds [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Net Asset Value [Member] | Fair Value, Measurements, Recurring [Member] | Partnership Interest [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	168.8	168.7
Fair Value, Inputs, Net Asset Value [Member] | Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Net Asset Value [Member] | Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Common Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Net Asset Value [Member] | All Industries Other than Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Preferred Stock [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Net Asset Value [Member] | All Industries Other than Finance, Insurance and Real Estate [Member] | Fair Value, Measurements, Recurring [Member] | Common Stocks [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Inputs, Net Asset Value [Member] | Limited Liability Companies and Limited Partnership Hedge Funds [Member] | Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value Option Investments, Fair Value Disclosure	$ 77.1	$ 111.4

Fair Value Measurements - Quant

Fair Value Measurements - Quantitative Information for Level Three Inputs (Details) - Market Yield [Member] - Fair Value, Inputs, Level 3 [Member] - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2017	Dec. 31, 2016
Collateralized Loan Obligations [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	$ 93.5	$ 103.5
Collateralized Loan Obligations [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	4.00%	3.70%
Collateralized Loan Obligations [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	9.30%	9.90%
Collateralized Loan Obligations [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	7.00%	6.30%
Other Debt Obligations [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	$ 15.6	$ 16
Debt Securities [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	482.4	511.1
External Credit Rating, Investment Grade [Member] | Private Placement [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	$ 93	$ 106.1
External Credit Rating, Investment Grade [Member] | Private Placement [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	2.40%	2.70%
External Credit Rating, Investment Grade [Member] | Private Placement [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	6.40%	5.10%
External Credit Rating, Investment Grade [Member] | Private Placement [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	3.60%	3.80%
External Credit Rating, Non Investment Grade [Member] | Senior Debt [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	$ 161.1	$ 142.2
External Credit Rating, Non Investment Grade [Member] | Senior Debt [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	4.10%	4.80%
External Credit Rating, Non Investment Grade [Member] | Senior Debt [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	14.90%	14.00%
External Credit Rating, Non Investment Grade [Member] | Senior Debt [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	9.90%	9.60%
External Credit Rating, Non Investment Grade [Member] | Junior Debt [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value Disclosure	$ 119.2	$ 143.3
External Credit Rating, Non Investment Grade [Member] | Junior Debt [Member] | Minimum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	6.60%	9.50%
External Credit Rating, Non Investment Grade [Member] | Junior Debt [Member] | Maximum [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	27.20%	20.00%
External Credit Rating, Non Investment Grade [Member] | Junior Debt [Member] | Weighted Average [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Fair Value Inputs, Discount Rate	13.10%	13.00%

Fair Value Measurements - Level

Fair Value Measurements - Level 3 Inputs Reconciliation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Period	$ 546.6	$ 646.8	$ 581.7	$ 606.8
Included in Condensed Consolidated Statement of Operations	0.4	(5.1)	1	(15.8)
Included in Other Comprehensive Income (Loss)	4.6	(0.9)	0.8	5.1
Purchases	48.2	74.2	149.2	183.8
Settlements	(36.7)	(25.9)	(96.6)	(40.8)
Sales	(8.8)	(39)	(57)	(89)
Transfers into Level 3	6.4	4.1	6.4	4.1
Transfers out of Level 3	(19.1)	(25.9)	(43.9)	(25.9)
Balance at End of Period	541.6	628.3	541.6	628.3
Fair Value, Level 2 to level 3 Transfers, Amount	(6.4)	(4.1)	(6.4)	(4.1)
Fair Value, Level 3 to level 1 Transfers, Amount			(3.5)
Fair Value, Level 3 to level 2 Transfers, Amount	(19.1)	(25.9)	(40.4)	(25.9)
Corporate Bonds and Notes [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Period	396.1	459.4	403.2	436.3
Included in Condensed Consolidated Statement of Operations	(0.8)	(7)	(4.7)	(15.8)
Included in Other Comprehensive Income (Loss)	1.8	(0.9)	4.6	2.4
Purchases	40.4	60.1	120.4	148.3
Settlements	(31.2)	(20.6)	(75.5)	(34.9)
Sales	(3.7)	(34)	(32)	(79.3)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	(15.2)	(15)	(28.6)	(15)
Balance at End of Period	387.4	442	387.4	442
US States and Political Subdivisions Debt Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Period	0	0	3.8	0
Included in Condensed Consolidated Statement of Operations	0	0	(1.2)	0
Included in Other Comprehensive Income (Loss)	0	0	0	0
Purchases	0	0	0	0
Settlements	0	0	(2.6)	0
Sales	0	0	0	0
Transfers into Level 3	1.4	4.1	1.4	4.1
Transfers out of Level 3	0	0	0	0
Balance at End of Period	1.4	4.1	1.4	4.1
Redeemable Preferred Stocks [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Period	0.1	2.9	0.6	3.8
Included in Condensed Consolidated Statement of Operations	0	0	0.1	0
Included in Other Comprehensive Income (Loss)	0	0.4	(0.1)	0
Purchases	0	0	0	0
Settlements	0	(2.4)	(0.5)	(2.9)
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	0.1	0.9	0.1	0.9
Collateralized Loan Obligations [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Period	95.4	102.2	103.5	87.3
Included in Condensed Consolidated Statement of Operations	0.5	0.1	1.4	(0.2)
Included in Other Comprehensive Income (Loss)	0	5.2	1.7	3
Purchases	6.3	13.9	22.7	33.2
Settlements	(5.5)	0	(18)	0
Sales	(4.3)	0	(11)	(1.9)
Transfers into Level 3	5	0	5	0
Transfers out of Level 3	(3.9)	(10.1)	(11.8)	(10.1)
Balance at End of Period	93.5	111.3	93.5	111.3
Other Mortgage- and Asset-backed [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Period		3.7		3.8
Included in Condensed Consolidated Statement of Operations		0.4		0.4
Included in Other Comprehensive Income (Loss)		(0.4)		(0.4)
Purchases		0		0
Settlements		(2.9)		(3)
Sales		0		0
Transfers into Level 3		0		0
Transfers out of Level 3		(0.8)		(0.8)
Balance at End of Period		0		0
Preferred and Common Stocks [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Period	22.8	31.4	29.7	30
Included in Condensed Consolidated Statement of Operations	0.4	1.4	1.7	0.5
Included in Other Comprehensive Income (Loss)	2.4	1	0.9	3.5
Purchases	0	0.1	3.2	0.2
Settlements	0	0	0	0
Sales	(0.5)	(2.9)	(6.9)	(3.2)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	(3.5)	0
Balance at End of Period	25.1	31	25.1	31
Other Equity Interests [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance at Beginning of Period	32.2	47.2	40.9	45.6
Included in Condensed Consolidated Statement of Operations	0.3	0	3.7	(0.7)
Included in Other Comprehensive Income (Loss)	0.4	(6.2)	(6.3)	(3.4)
Purchases	1.5	0.1	2.9	2.1
Settlements	0	0	0	0
Sales	(0.3)	(2.1)	(7.1)	(4.6)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Balance at End of Period	$ 34.1	$ 39	$ 34.1	$ 39

Contingencies Gain Contingency

Contingencies Gain Contingency (Details) $ in Millions	Sep. 30, 2017USD ($)
Commitments and Contingencies Disclosure [Abstract]
Gain Contingency, Unrecorded Amount	$ 84.3

Related Parties (Details)

Related Parties (Details) - Pension Plans [Member] - Investment Management Services for Defined Benefit Plan [Member] - FS&C [Member] - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2017	Sep. 30, 2016
Related Party Transaction [Line Items]
Assets under Management, Carrying Amount	$ 160.4
Investment expenses	$ 0.6	$ 0.3