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Document and Entity Information
Jun. 28, 2021
Cover [Abstract]  
Entity Registrant Name BOYD GAMING CORP
Amendment Flag false
Entity Central Index Key 0000906553
Document Type 8-K
Document Period End Date Jun. 28, 2021
Entity Incorporation State Country Code NV
Entity File Number 001-12882
Entity Tax Identification Number 88-0242733
Entity Address, Address Line One 3883 Howard Hughes Parkway
Entity Address, Address Line Two Ninth Floor
Entity Address, City or Town Las Vegas
Entity Address, State or Province NV
Entity Address, Postal Zip Code 89169
City Area Code (702)
Local Phone Number 792-7200
Written Communications false
Soliciting Material false
Pre Commencement Tender Offer false
Pre Commencement Issuer Tender Offer false
Security 12b Title Common stock, $0.01 par value
Trading Symbol BYD
Security Exchange Name NYSE
Entity Emerging Growth Company false