XML 31 R56.htm IDEA: XBRL DOCUMENT
v2.4.0.8

Related Parties (Details) (Director [Member], USD $) In Millions, unless otherwise specified | 9 Months Ended
--- | ---
Sep. 30, 2014 | Sep. 30, 2013
Related Party Transaction [Line Items] |  |
Amounts invested in Defined Contribution Plan Mutual Fund Managed by a Directors Investment Advisory Firm | $ 22.6 |
Amounts invested in Defined Contribution Plan Mutual Fund Managed by a Directors Investment Advisory Firm Percentage of Total Defined Contribution Plan Investments | 6.40% |
Trinity [Member] |  |
Related Party Transaction [Line Items] |  |
Amount of assets being managed by FS&C | 165.8 |
Investment expenses | 0.3 | 0.3
Pension Plan, Defined Benefit [Member] |  |
Related Party Transaction [Line Items] |  |
Investment expenses | 0.3 | 0.2
Pension Plan, Defined Benefit [Member] |  |
Related Party Transaction [Line Items] |  |
Amount of assets being managed by FS&C | $ 157.8 |

X
- Definition Amounts Invested in Defined Contribution Plan Mutual Fund Managed by a Director's Investment Advisory Firm + References No definition available. + Details
Name: | kmpr_AmountsInvestedInDefinedContributionPlanMutualFundManagedByDirectorsInvestmentAdvisoryFirm
Namespace Prefix: | kmpr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amounts Invested in Defined Contribution Plan Mutual Fund Managed by a Director's Investment Advisory Frim, Percentage of Total Defined Contribution Plan Investments + References No definition available. + Details
Name: | kmpr_AmountsInvestedInDefinedContributionPlanMutualFundManagedByDirectorsInvestmentAdvisoryFirmPercentageOfTotalDefinedContributionPlanInvestments
Namespace Prefix: | kmpr_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Investment Assets Managed by a Directors Investment Advisory Firm + References No definition available. + Details
Name: | kmpr_InvestmentAssetsManagedByDirectorsInvestmentAdvisoryFirm
Namespace Prefix: | kmpr_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
Name: | us-gaap_RelatedPartyTransactionExpensesFromTransactionsWithRelatedParty
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration