v2.3.0.15
Document and Entity Information
9 Months Ended
Sep. 30, 2011
Oct. 31, 2011
Entity Information [Line Items]  
Entity Registrant NameBOYD GAMING CORP 
Entity Central Index Key0000906553 
Current Fiscal Year End Date--12-31 
Entity Filer CategoryAccelerated Filer 
Document Type10-Q 
Document Period End DateSep. 30, 2011
Document Fiscal Year Focus2011 
Document Fiscal Period FocusQ3 
Amendment Flagfalse 
Entity Common Stock, Shares Outstanding 86,317,735
Entity Well Known Seasoned IssuerNo 
Entity Voluntary FilersNo 
Entity Current Reporting StatusYes