v3.19.3
Coverpage - shares
9 Months Ended
Sep. 30, 2019
Oct. 25, 2019
Entity Information [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Sep. 30, 2019  
Document Transition Report false  
Entity File Number 001-14428  
Entity Central Index Key 0000913144  
Current Fiscal Year End Date --12-31  
Entity Registrant Name RENAISSANCERE HOLDINGS LTD  
Entity Incorporation, State or Country Code D0  
Entity Tax Identification Number 98-0141974  
Entity Address, Address Line One Renaissance House  
Entity Address, Address Line Two 12 Crow Lane  
Entity Address, City or Town Pembroke  
Entity Address, Country BM  
Entity Address, Postal Zip Code HM 19  
City Area Code 441  
Local Phone Number 295-4513  
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  
Document Fiscal Year Focus 2019  
Document Fiscal Period Focus Q3  
Amendment Flag false  
Entity Common Stock, Shares Outstanding (in shares)   44,151,949
Common shares    
Entity Information [Line Items]    
Title of 12(b) Security Common Shares, Par Value $1.00 per share  
Trading Symbol RNR  
Security Exchange Name NYSE  
Series C 6.08% Preference Shares, Par Value $1.00 per share    
Entity Information [Line Items]    
Title of 12(b) Security Series C 6.08% Preference Shares, Par Value $1.00 per share  
Trading Symbol RNR PRC  
Security Exchange Name NYSE  
Series E 5.375% Preference Shares, Par Value $1.00 per share    
Entity Information [Line Items]    
Title of 12(b) Security Series E 5.375% Preference Shares, Par Value $1.00 per share  
Trading Symbol RNR PRE  
Security Exchange Name NYSE  
Depositary Shares, each representing a 1/1,000th interest in a Series F 5.    
Entity Information [Line Items]    
Title of 12(b) Security Depositary Shares, each representing a 1/1,000th interest in a Series F 5.750% Preference Share, Par Value $1.00 per share  
Trading Symbol RNR PRF  
Security Exchange Name NYSE