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Note 2 - Acquisitions (Details Textual) - USD ($) $ in Thousands			12 Months Ended
	Sep. 01, 2024	Nov. 01, 2022	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Payments to Acquire Businesses, Net of Cash Acquired			$ 30,266	$ (0)	$ 167,862
Resorts Digital Gaming, LLC [Member]
Marketing Agreement, Term (Year)	20 years
Marketing Agreement, Renewal Period (Year)	10 years
Business Combination, Consideration Transferred	$ 34,000
Cash Acquired from Acquisition	3,700
Payments to Acquire Businesses, Net of Cash Acquired	$ 30,300
Business Combination, Acquisition Related Costs			100
Pala Interactive LLC [Member]
Business Combination, Consideration Transferred		$ 175,200
Cash Acquired from Acquisition		7,300
Payments to Acquire Businesses, Net of Cash Acquired		167,900
Business Combination, Acquisition Related Costs			$ 0	$ 700	$ 5,500
Pala Interactive LLC [Member] | Pala Canada [Member]
Business Acquisition, Goodwill, Expected Tax Non-Deductible Amount		$ 7,800

X

- Definition

The amount of goodwill arising from a business combination that is expected to not be deductible for tax purposes.

+ References

No definition available.

+ Details

Name:	byd_BusinessAcquisitionGoodwillExpectedTaxNondeductibleAmount
Namespace Prefix:	byd_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

X

- Definition

Represents the marketing agreement renewal period.

+ References

No definition available.

+ Details

Name:	byd_MarketingAgreementRenewalPeriod
Namespace Prefix:	byd_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Definition

Represents the term for the marketing agreement.

+ References

No definition available.

+ Details

Name:	byd_MarketingAgreementTerm
Namespace Prefix:	byd_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	instant

X

- Definition

This element represents acquisition-related costs incurred to effect a business combination which costs have been expensed during the period. Such costs include finder's fees; advisory, legal, accounting, valuation, and other professional or consulting fees; general administrative costs, including the costs of maintaining an internal acquisitions department; and may include costs of registering and issuing debt and equity securities.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 23
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479405/805-10-25-23

+ Details

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

X

- Definition

Amount of consideration transferred, consisting of acquisition-date fair value of assets transferred by the acquirer, liabilities incurred by the acquirer, and equity interest issued by the acquirer.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 30
-Paragraph 8
-SubTopic 30
-Topic 805
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479637/805-30-30-8

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (b)
-SubTopic 30
-Topic 805
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479581/805-30-50-1

Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Section 30
-Paragraph 7
-SubTopic 30
-Topic 805
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479637/805-30-30-7

+ Details

Name:	us-gaap_BusinessCombinationConsiderationTransferred1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Definition

The cash inflow associated with the acquisition of business during the period (for example, cash that was held by the acquired business).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 12
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-12

+ Details

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

X

- Definition

The cash outflow associated with the acquisition of a business, net of the cash acquired from the purchase.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-13

+ Details

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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=byd_ResortsDigitalGamingLlcMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_BusinessAcquisitionAxis=byd_PalaInteractiveLLCMember
Namespace Prefix:
Data Type:	na
Balance Type:
Period Type:

X

- Details

Name:	us-gaap_StatementBusinessSegmentsAxis=byd_PalaCanadaMember
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Period Type: