v3.4.0.3
Document And Entity Information - shares
3 Months Ended
Mar. 31, 2016
Apr. 29, 2016
Document And Entity Information [Abstract]    
Entity Registrant Name HollyFrontier Corp  
Entity Central Index Key 0000048039  
Current Fiscal Year End Date --12-31  
Entity Filer Category Large Accelerated Filer  
Document Type 10-Q  
Document Period End Date Mar. 31, 2016  
Document Fiscal Year Focus 2016  
Document Fiscal Period Focus Q1  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   176,519,301