v3.10.0.1
Document and Entity Information - shares
9 Months Ended
Sep. 30, 2018
Nov. 02, 2018
Document and Entity Information    
Entity Registrant Name NorthStar Realty Europe Corp.  
Entity Central Index Key 0001646587  
Entity Current Reporting Status Yes  
Document Type 10-Q  
Document Period End Date Sep. 30, 2018  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Entity Emerging Growth Company true  
Entity Transition Period true  
Entity Small Business false  
Entity Common Stock, Shares Outstanding   49,817,436
Document Fiscal Year Focus 2018  
Document Fiscal Period Focus Q3