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Document and Entity Information
Sep. 13, 2023
Document And Entity Information [Line Items]  
Entity Registrant Name KEMPER Corp
Amendment Flag false
Entity Central Index Key 0000860748
Document Type 8-K
Document Period End Date Sep. 13, 2023
Entity Incorporation State Country Code DE
Entity File Number 001-18298
Entity Tax Identification Number 95-4255452
Entity Address, Address Line One 200 E. Randolph St.
Entity Address, Address Line Two Suite 3300
Entity Address, City or Town Chicago
Entity Address, State or Province IL
Entity Address, Postal Zip Code 60601
City Area Code 312
Local Phone Number 661-4600
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Entity Emerging Growth Company false
Common Stock [Member]  
Document And Entity Information [Line Items]  
Security 12b Title Common Stock, par value $0.10 per share
Trading Symbol KMPR
Security Exchange Name NYSE
A 5875 Fixed Rate Reset Junior Subordinated Debentures Due 2062 [Member]  
Document And Entity Information [Line Items]  
Security 12b Title 5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062
Trading Symbol KMPB
Security Exchange Name NYSE