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Document And Entity Information - USD ($)
$ in Millions
 12 Months Ended
Dec. 31, 2016
Feb. 15, 2017
Jun. 30, 2016
Document Information [Line Items]      
Document Type 10-K    
Amendment Flag false    
Document Period End Date Dec. 31, 2016    
Document Fiscal Year Focus 2016    
Document Fiscal Period Focus FY    
Entity Registrant Name HORACE MANN EDUCATORS CORP /DE/    
Entity Central Index Key 0000850141    
Current Fiscal Year End Date --12-31    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
Entity Current Reporting Status Yes    
Entity Filer Category Large Accelerated Filer    
Entity Public Float     $ 1,356.3
Trading Symbol HMN    
Entity Common Stock, Shares Outstanding   40,339,323