XML 61 R49.htm IDEA: XBRL DOCUMENT v3.24.2.u1

Business Segments - Earned Premiums by Product Line (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Segment Reporting Information [Line Items]
Premiums Earned, Net	$ 1,033.7	$ 1,166.9	$ 2,065.6	$ 2,347.8
Operating Segments | Specialty Property & Casualty Insurance
Segment Reporting Information [Line Items]
Premiums Earned, Net	862.6	932.3	1,702.6	1,876.5
Operating Segments | Life Insurance
Segment Reporting Information [Line Items]
Premiums Earned, Net	100.8	102.2	198.1	201.5
Operating Segments | Specialty and Life Insurance
Segment Reporting Information [Line Items]
Premiums Earned, Net	963.4	1,034.5	1,900.7	2,078.0
Operating Segments | Non-Core Operations
Segment Reporting Information [Line Items]
Premiums Earned, Net	70.3	132.4	164.9	269.8
Operating Segments | Personal Automobile | Specialty Property & Casualty Insurance
Segment Reporting Information [Line Items]
Premiums Earned, Net	691.5	766.6	1,366.8	1,554.5
Operating Segments | Commercial Automobile | Specialty Property & Casualty Insurance
Segment Reporting Information [Line Items]
Premiums Earned, Net	171.1	165.7	335.8	322.0
Operating Segments | Life | Life Insurance
Segment Reporting Information [Line Items]
Premiums Earned, Net	84.4	84.8	165.0	167.0
Operating Segments | Accident and Health | Life Insurance
Segment Reporting Information [Line Items]
Premiums Earned, Net	5.6	5.8	11.2	11.7
Operating Segments | Property | Life Insurance
Segment Reporting Information [Line Items]
Premiums Earned, Net	$ 10.8	$ 11.6	$ 21.9	$ 22.8

X

- Definition

Amount, after premiums ceded to other entities and premiums assumed by the entity, of premiums earned.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 235
-Name Accounting Standards Codification
-Section S99
-Paragraph 2
-Subparagraph (SX 210.12-17(Column E))
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477965/944-235-S99-2

Reference 2: http://www.xbrl.org/2003/role/disclosureRef
-Topic 944
-SubTopic 605
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)(3)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479032/944-605-50-1

Reference 3: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.9-04(13)(c))
-SubTopic 220
-Topic 942
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1

Reference 4: http://www.xbrl.org/2003/role/disclosureRef
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(1))
-SubTopic 220
-Topic 944
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477250/944-220-S99-1

+ Details

Name:	us-gaap_PremiumsEarnedNet
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

+ Details

Name:	us-gaap_SegmentReportingInformationLineItems
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Details

Name:	srt_ConsolidationItemsAxis=us-gaap_OperatingSegmentsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=kmpr_SpecialtyPropertyCasualtyInsuranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=kmpr_LifeAndHealthInsuranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=kmpr_SpecialtyAndLifeInsuranceMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=kmpr_NonCoreOperationsMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=kmpr_SpecialtyAutomobileMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=kmpr_CommercialAutomobileMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=kmpr_LifeMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=kmpr_AccidentalandHealthMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	srt_ProductOrServiceAxis=kmpr_PropertyMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: