XML 250 R1.htm IDEA: XBRL DOCUMENT v3.19.3.a.u2
Cover Page - USD ($)
 12 Months Ended
Dec. 31, 2019
Feb. 14, 2020
Jun. 30, 2019
Cover page.      
Document Type 10-K    
Document Annual Report true    
Document Period End Date Dec. 31, 2019    
Document Transition Report false    
Entity File Number 001-16533    
Entity Registrant Name ProAssurance Corporation    
Entity Incorporation, State or Country Code DE    
Entity Tax Identification Number 63-1261433    
Entity Address, Address Line One 100 Brookwood Place,    
Entity Address, City or Town Birmingham,    
Entity Address, State or Province AL    
Entity Address, Postal Zip Code 35209    
City Area Code (205)    
Local Phone Number 877-4400    
Title of 12(b) Security Common Stock, par value $0.01 per share    
Trading Symbol PRA    
Security Exchange Name NYSE    
Entity Well-known Seasoned Issuer Yes    
Entity Voluntary Filers No    
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 Public Float     $ 1,905,028,296
Entity Common Stock, Shares Outstanding   53,793,370  
Entity Central Index Key 0001127703    
Amendment Flag false    
Document Fiscal Year Focus 2019    
Document Fiscal Period Focus FY    
Current Fiscal Year End Date --12-31    
Documents Incorporated by Reference
(i)
The definitive proxy statement for the 2020 Annual Meeting of the Stockholders of ProAssurance Corporation (File No. 001-16533) is incorporated by reference into Part III of this report.