XML 11 R1.htm IDEA: XBRL DOCUMENT v3.23.1
Document and Entity Information - $ / shares
3 Months Ended
Mar. 31, 2023
May 04, 2023
Dec. 31, 2022
Cover [Abstract]      
Document Type 10-Q    
Document Quarterly Report true    
Document Period End Date Mar. 31, 2023    
Document Transition Report false    
Entity File Number 001-18298    
Entity Registrant Name Kemper Corporation    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 95-4255452    
Entity Address, Address Line One 200 E. Randolph Street    
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    
Entity Current Reporting Status Yes    
Entity Interactive Data Current Yes    
Entity Filer Category Large Accelerated Filer    
Entity Small Business false    
Entity Emerging Growth Company false    
Entity Shell Company false    
Entity Common Stock, Shares Outstanding (in shares)   63,991,262  
Entity Central Index Key 0000860748    
Current Fiscal Year End Date --12-31    
Document Fiscal Year Focus 2023    
Document Fiscal Period Focus Q1    
Amendment Flag false    
Common stock, par value (in dollars per share) $ 0.10   $ 0.10
Common Stock      
Cover [Abstract]      
Title of 12(b) Security Common Stock, par value $0.10 per share    
Security Exchange Name NYSE    
Entity Listings [Line Items]      
Title of 12(b) Security Common Stock, par value $0.10 per share    
Trading Symbol KMPR    
Security Exchange Name NYSE    
5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062      
Cover [Abstract]      
Title of 12(b) Security 5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062    
Security Exchange Name NYSE    
Entity Listings [Line Items]      
Title of 12(b) Security 5.875% Fixed-Rate Reset Junior Subordinated Debentures due 2062    
Trading Symbol KMPB    
Security Exchange Name NYSE