XML 13 R1.htm IDEA: XBRL DOCUMENT v3.7.0.1
Document and Entity Information - shares
 3 Months Ended
Mar. 31, 2017
May 05, 2017
Entity Information [Line Items]    
Document Fiscal Period Focus Q1  
Document Period End Date Mar. 31, 2017  
Document Fiscal Year Focus 2017  
Entity Registrant Name BOYD GAMING CORP  
Entity Central Index Key 0000906553  
Current Fiscal Year End Date --12-31  
Entity Filer Category Accelerated Filer  
Document Type 10-Q  
Amendment Flag false  
Entity Common Stock, Shares Outstanding   113,234,078