XML 109 R92.htm IDEA: XBRL DOCUMENT
v3.10.0.1

Income From Investments - Net Investment Income (Details) - USD ($) $ in Millions | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017 | Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Investment Income: |  |  |  |  |  |  |  |  |  |  |
Equity Method Limited Liability Investments |  |  |  |  |  |  |  |  | $ 11.0 | $ 24.8 | $ 7.5
Fair Value Option Investments |  |  |  |  |  |  |  |  | 0.0 | 1.3 | (1.9)
Investment Income, Limited Liability Investments Included in Equity Securities |  |  |  |  |  |  |  |  | 26.4 | 28.6 | 22.0
Investment Income, Alternative Investments |  |  |  |  |  |  |  |  | 37.4 | 54.7 | 27.6
Real Estate |  |  |  |  |  |  |  |  | 9.6 | 10.7 | 11.8
Total Investment Income |  |  |  |  |  |  |  |  | 359.9 | 345.0 | 316.3
Investment Expenses: |  |  |  |  |  |  |  |  |  |  |
Other Investment Expenses |  |  |  |  |  |  |  |  | 19.0 | 17.8 | 18.0
Net Investment Income | $ 91.3 | $ 92.0 | $ 78.4 | $ 79.2 | $ 82.6 | $ 85.9 | $ 77.1 | $ 81.6 | 340.9 | 327.2 | 298.3
Accrued Investment Income Receivable | $ 77.9 |  |  |  | $ 72.8 |  |  |  | 77.9 | 72.8 |
Real Estate Investment [Member] |  |  |  |  |  |  |  |  |  |  |
Investment Expenses: |  |  |  |  |  |  |  |  |  |  |
Other Investment Expenses |  |  |  |  |  |  |  |  | 9.7 | 10.5 | 11.0
Other Investment [Member] |  |  |  |  |  |  |  |  |  |  |
Investment Expenses: |  |  |  |  |  |  |  |  |  |  |
Other Investment Expenses |  |  |  |  |  |  |  |  | 9.3 | 7.3 | 7.0
Fixed Maturities [Member] |  |  |  |  |  |  |  |  |  |  |
Investment Income: |  |  |  |  |  |  |  |  |  |  |
Interest and Dividends on Fixed Maturities |  |  |  |  |  |  |  |  | 268.9 | 246.6 | 242.7
Equity Securities [Member] |  |  |  |  |  |  |  |  |  |  |
Investment Income: |  |  |  |  |  |  |  |  |  |  |
Interest and Dividends on Fixed Maturities |  |  |  |  |  |  |  |  | 13.6 | 9.3 | 11.8
Short-term Investments [Member] |  |  |  |  |  |  |  |  |  |  |
Investment Income: |  |  |  |  |  |  |  |  |  |  |
Interest and Dividends on Fixed Maturities |  |  |  |  |  |  |  |  | 7.0 | 1.6 | 0.5
Policy Loans [Member] |  |  |  |  |  |  |  |  |  |  |
Investment Income: |  |  |  |  |  |  |  |  |  |  |
Interest and Dividends on Fixed Maturities |  |  |  |  |  |  |  |  | 22.5 | 21.6 | 21.6
Other Investment [Member] |  |  |  |  |  |  |  |  |  |  |
Investment Income: |  |  |  |  |  |  |  |  |  |  |
Interest and Dividends on Fixed Maturities |  |  |  |  |  |  |  |  | $ 0.9 | $ 0.5 | $ 0.3

X
- Definition Investment income before investment expense. + References No definition available. + Details
Name: | kmpr_GrossInvestmentIncome
Namespace Prefix: | kmpr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Investment Expenses: [Abstract] + References No definition available. + Details
Name: | kmpr_InvestmentExpensesAbstract
Namespace Prefix: | kmpr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment Income, Alternative Investments + References No definition available. + Details
Name: | kmpr_InvestmentIncomeAlternativeInvestments
Namespace Prefix: | kmpr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Investment Income, Equity Method Limited Liability Investments + References No definition available. + Details
Name: | kmpr_InvestmentIncomeEquityMethodLimitedLiabilityInvestments
Namespace Prefix: | kmpr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Investment Income, Fair Value Option Investments + References No definition available. + Details
Name: | kmpr_InvestmentIncomeFairValueOptionInvestments
Namespace Prefix: | kmpr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Investment Income, Limited Liability Investments Included in Equity Securities + References No definition available. + Details
Name: | kmpr_InvestmentIncomeLimitedLiabilityInvestmentsIncludedinEquitySecurities
Namespace Prefix: | kmpr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Investment Income (Loss): [Abstract] + References No definition available. + Details
Name: | kmpr_InvestmentIncomeLossAbstract
Namespace Prefix: | kmpr_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Investment Income, Real Estate + References No definition available. + Details
Name: | kmpr_InvestmentIncomeRealEstate
Namespace Prefix: | kmpr_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Interest, dividends, rents, ancillary and other revenues earned but not yet received by the entity on its investments. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(4)) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(3)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
Name: | us-gaap_AccruedInvestmentIncomeReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Represents the total of interest and dividend income, including any amortization and accretion (as applicable) of discounts and premiums, earned from (1) loans and leases whether held-for-sale or held-in-portfolio; (2) investment securities; (3) federal funds sold; (4) securities purchased under agreements to resell; (5) investments in banker's acceptances, commercial paper, or certificates of deposit; (6) dividend income; or (7) other investments not otherwise specified herein. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.1-5) -URI http://asc.fasb.org/extlink&oid=114873765&loc=SL114874048-224260 + Details
Name: | us-gaap_InterestAndDividendIncomeOperating
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of expenses related to the generation of investment income. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 220 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.9) -URI http://asc.fasb.org/extlink&oid=115205541&loc=SL114868664-224227 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.2) -URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263 + Details
Name: | us-gaap_InvestmentIncomeInvestmentExpense
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, after investment expense, of income earned from investments in securities and real estate. Includes, but is not limited to, real estate investment, policy loans, dividends, and interest. Excludes realized gain (loss) on investments. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 220 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04(2)) -URI http://asc.fasb.org/extlink&oid=114873790&loc=SL114874131-224263 + Details
Name: | us-gaap_NetInvestmentIncome
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | invest_InvestmentAxis=us-gaap_RealEstateInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | invest_InvestmentAxis=kmpr_OtherInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_FixedMaturitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_EquitySecuritiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_ShortTermInvestmentsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=us-gaap_PolicyLoansMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_InvestmentTypeAxis=kmpr_OtherInvestmentMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |