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v3.19.1

Organization and Basis of Presentation (Details) | 3 Months Ended
--- | ---
Mar. 31, 2019 property
Consolidated Entities [Line Items] |
Number of gaming entertainment properties | 29

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- Definition Consolidated Entities [Line Items] + References No definition available. + Details
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Namespace Prefix: | byd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Number of Gaming Entertainment Properties + References No definition available. + Details
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Namespace Prefix: | byd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration