XML 40 R27.htm IDEA: XBRL DOCUMENT v3.21.2

Note 1 - Summary of Significant Accounting Policies (Details Textual)	3 Months Ended		6 Months Ended
	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)	Jun. 30, 2021 USD ($)	Jun. 30, 2020 USD ($)
Number of Gaming Entertainment Properties, Open and Operating	26		26
Number of Gaming Entertainment Properties	28		28
Taxes, Other	$ 177,500	$ 34,800	$ 336,300	$ 144,800

X

- Definition

The number of gaming entertainment properties.

+ References

No definition available.

+ Details

Name:	byd_NumberOfGamingEntertainmentProperties
Namespace Prefix:	byd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents number of gaming entertainment properties open and operating.

+ References

No definition available.

+ Details

Name:	byd_NumberOfGamingEntertainmentPropertiesOpenAndOperating
Namespace Prefix:	byd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Amount of tax expense classified as other.

+ References

No definition available.

+ Details

Name:	us-gaap_TaxesOther
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration