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v2.4.1.9

Other Reinsurance Assumed Insurance (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012
Assumed Insurance [Line Items] |  |  |
Assumed Premiums Earned | $ 57.1 us-gaap_AssumedPremiumsEarned | $ 52.7 us-gaap_AssumedPremiumsEarned | $ 44.0 us-gaap_AssumedPremiumsEarned
Capitol [Member] |  |  |
Assumed Insurance [Line Items] |  |  |
Number of Company Employee Board Members | 5 kmpr_NumberOfCompanyEmployeeBoardMembers / dei_LegalEntityAxis = kmpr_CapitolMember |  |
Number of Board of Director Members | 5 kmpr_NumberOfBoardOfDirectorMembers / dei_LegalEntityAxis = kmpr_CapitolMember |  |
ORCC [Member] |  |  |
Assumed Insurance [Line Items] |  |  |
Number of Company Employee Board Members | 9 kmpr_NumberOfCompanyEmployeeBoardMembers / dei_LegalEntityAxis = kmpr_OrccMember |  |
Number of Board of Director Members | 9 kmpr_NumberOfBoardOfDirectorMembers / dei_LegalEntityAxis = kmpr_OrccMember |  |
Capitol [Member] |  |  |
Assumed Insurance [Line Items] |  |  |
Assumed Premiums Earned | 21.9 us-gaap_AssumedPremiumsEarned / kmpr_AssumedInsuranceOriginalInsurerAxis = kmpr_CapitolMember | 22.4 us-gaap_AssumedPremiumsEarned / kmpr_AssumedInsuranceOriginalInsurerAxis = kmpr_CapitolMember | 25.0 us-gaap_AssumedPremiumsEarned / kmpr_AssumedInsuranceOriginalInsurerAxis = kmpr_CapitolMember
Capitol [Member] | Trinity [Member] |  |  |
Assumed Insurance [Line Items] |  |  |
Earned Premiums Assumed, Percentage | 100.00%kmpr_AssumedPremiumsOtherInsurancePercentage / kmpr_AssumedInsuranceOriginalInsurerAxis = kmpr_CapitolMember / dei_LegalEntityAxis = kmpr_TrinityMember |  |
ORCC [Member] |  |  |
Assumed Insurance [Line Items] |  |  |
Assumed Premiums Earned | 6.7 us-gaap_AssumedPremiumsEarned / kmpr_AssumedInsuranceOriginalInsurerAxis = kmpr_OrccMember | 7.2 us-gaap_AssumedPremiumsEarned / kmpr_AssumedInsuranceOriginalInsurerAxis = kmpr_OrccMember | 8.2 us-gaap_AssumedPremiumsEarned / kmpr_AssumedInsuranceOriginalInsurerAxis = kmpr_OrccMember
ORCC [Member] | Trinity [Member] |  |  |
Assumed Insurance [Line Items] |  |  |
Earned Premiums Assumed, Percentage | 100.00%kmpr_AssumedPremiumsOtherInsurancePercentage / kmpr_AssumedInsuranceOriginalInsurerAxis = kmpr_OrccMember / dei_LegalEntityAxis = kmpr_TrinityMember |  |
Non-Catastrophe Reinsurance [Member] |  |  |
Assumed Insurance [Line Items] |  |  |
Assumed Premiums Earned | $ 57.1 us-gaap_AssumedPremiumsEarned / us-gaap_ReinsurancePolicyTypeAxis = kmpr_NonCatastropheReinsuranceMember | $ 52.7 us-gaap_AssumedPremiumsEarned / us-gaap_ReinsurancePolicyTypeAxis = kmpr_NonCatastropheReinsuranceMember | $ 44.0 us-gaap_AssumedPremiumsEarned / us-gaap_ReinsurancePolicyTypeAxis = kmpr_NonCatastropheReinsuranceMember

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- Details
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- Definition Premiums assumed for all other insurance from other insurers as a result of reinsurance arrangements, percentage. + References No definition available. + Details
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- Definition Number of Board of Director Members + References No definition available. + Details
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Balance Type: | na
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- Definition Number of Company Employee Board Members + References No definition available. + Details
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Balance Type: | na
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- Definition Amount of earned premiums assumed from other entities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 17 -Article 12 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 235 -Section S99 -Paragraph 2 -Subparagraph (SX 210.12-17) -URI http://asc.fasb.org/extlink&oid=34713774&loc=d3e574992-122915 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-04.1) -URI http://asc.fasb.org/extlink&oid=6879464&loc=d3e573970-122913 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 605 -Section 50 -Paragraph 1 -Subparagraph (b),(c)(2) -URI http://asc.fasb.org/extlink&oid=6486672&loc=d3e27261-158547 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 04 -Paragraph 1 -Article 7 + Details
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- Details
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