XML 90 R71.htm IDEA: XBRL DOCUMENT
v3.25.0.1

Note 9 - Commitments and Contingencies (Details Textual) | 1 Months Ended | 3 Months Ended | 12 Months Ended |  |  |  |
--- | --- | --- | --- | --- | --- | --- | ---
Sep. 30, 2011 USD ($) | Sep. 30, 2022 USD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 USD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 | Sep. 27, 2024 | Oct. 15, 2018 | Jul. 31, 2012 USD ($) | Jan. 11, 2011 USD ($)
Income Statement [Abstract] |  |  |  |  |  |  |  |  |  |  |
Other Operating Income (Expense), Net |  |  | $ (5,385,000) | $ 4,207,000 | $ 12,183,000 |  |  |  |  |  |
Accrued Liabilities, Current |  |  | 447,415,000 | 427,379,000 |  |  |  |  |  |  |
Parking Fee Per Space |  |  | 80 |  |  |  |  |  |  |  |
Project Development, Preopening and Writedowns Expense |  |  | 28,572,000 | (8,935,000) | (18,936,000) |  |  |  |  |  |
Proceeds from Collection of Loans Receivable |  |  | 208,000 | 113,555,000 | 0 |  |  |  |  |  |
Interest Payments Received |  |  | $ 213,000 | 11,999,000 | $ 0 |  |  |  |  |  |
Additional Slot Units |  |  |  |  |  |  |  | 400 |  |  |
Number of Hotel Rooms |  |  |  |  |  |  |  | 300 |  |  |
Number of Food and Beverage Outlets |  |  |  |  |  |  |  | 2 |  |  |
Lessee, Operating Lease, Renewal Term (Year) |  |  | 61 years |  |  |  |  |  |  |  |
Gain on Business Interruption Insurance Recovery, Statement of Income or Comprehensive Income [Extensible Enumeration] |  |  |  |  | Other Operating Income (Expense), Net |  |  |  |  |  |
Hurricane [Member] |  |  |  |  |  |  |  |  |  |  |
Insurance Recoveries |  | $ 13,200,000 |  |  |  |  |  |  |  |  |
Gain on Business Interruption Insurance Recovery |  |  |  |  | $ 12,600,000 |  |  |  |  |  |
Management Service [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  |  | $ 88,400,000 | $ 76,900,000 | 26,900,000 |  |  |  |  |  |
Development Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Business Combination, Consideration Transferred | $ 24,500,000 |  |  |  |  |  |  |  |  |  |
Debt Instrument, Interest Rate, Stated Percentage |  |  |  | 12.50% |  |  |  |  |  |  |
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease), Total |  |  |  |  | 35,100,000 |  |  |  |  |  |
Project Development, Preopening and Writedowns Expense |  |  |  | $ 20,100,000 | 20,400,000 |  |  |  |  |  |
Interest Income (Expense), Net, Total |  |  |  | 14,300,000 | 14,700,000 |  |  |  |  |  |
Proceeds from Collection of Loans Receivable |  |  | 200,000 | 113,600,000 |  |  |  |  |  |  |
Interest Payments Received |  |  | $ 200,000 | 12,000,000 |  |  |  |  |  |  |
Development Agreement [Member] | One-time Development Fee [Member] |  |  |  |  |  |  |  |  |  |  |
Revenue from Contract with Customer, Including Assessed Tax |  |  |  |  | 5,000,000 |  |  |  |  |  |
Development Agreement [Member] | Minimum [Member] |  |  |  |  |  |  |  |  |  |  |
Unrecorded Commitment to Fund Pre Development Costs, Annual Amount |  |  |  |  |  |  |  |  |  | $ 1,000,000 |
Development Agreement [Member] | Maximum [Member] |  |  |  |  |  |  |  |  |  |  |
Unrecorded Commitment to Fund Pre Development Costs, Annual Amount |  |  |  |  |  |  |  |  |  | $ 2,000,000 |
Diamond Jo Dubuque [Member] |  |  |  |  |  |  |  |  |  |  |
Sponsor Fee Percentage on Slot and Table Game Revenues |  |  | 4.50% |  |  |  |  |  |  |  |
Sponsor Fee Percentage on Sports Wagering Revenue |  |  | 0.75% |  |  |  |  |  |  |  |
Sponsor Fees |  |  | $ 3,500,000 | 3,500,000 | 3,300,000 |  |  |  |  |  |
Diamond Jo Worth [Member] |  |  |  |  |  |  |  |  |  |  |
Other Commitment Time Period (Year) |  |  |  |  |  |  | 10 years |  |  |  |
Sponsor Fee Percentage on Slot and Table Game Revenues |  |  | 5.76% |  |  |  |  |  |  |  |
Sponsor Fee Percentage on Sports Wagering Revenue |  |  | 0.75% |  |  |  |  |  |  |  |
Sponsor Fees |  |  | $ 6,200,000 | 6,100,000 | $ 5,900,000 |  |  |  |  |  |
Master Lease for Pinnacle Purchase Agreement [Member] |  |  |  |  |  |  |  |  |  |  |
Lessee, Operating Lease, Renewal Term (Year) |  |  |  |  |  |  |  |  | 5 years |  |
Annual Donations for Education in Operating Area [Member] | Kansas Star [Member] |  |  |  |  |  |  |  |  |  |  |
Other Commitment, Total |  |  |  |  |  |  |  |  |  |  | $ 1,500,000
Mulvane Special Tax Assessment for Utilities [Member] | Kansas Star [Member] |  |  |  |  |  |  |  |  |  |  |
Other Commitment Time Period (Year) |  |  |  |  |  | 15 years |  |  |  |  |
Debt Issued By Counterparty |  |  |  |  |  | $ 19,700,000 |  |  |  |  |
Special Tax Assessment |  |  | 1,600,000 | 1,600,000 |  |  |  |  |  |  |
Accrued Liabilities, Current |  |  | 2,000,000 | 3,100,000 |  |  |  |  |  |  |
Mulvane Special Tax Assessment for Utilities, Discount [Member] | Kansas Star [Member] |  |  |  |  |  |  |  |  |  |  |
Accrued Liabilities, Current |  |  | 500,000 | 800,000 |  |  |  |  |  |  |
Additional Mulvane Special Tax Assessment for Utilities [Member] | Kansas Star [Member] |  |  |  |  |  |  |  |  |  |  |
Debt Issued By Counterparty |  |  | 5,000,000 |  |  |  |  |  |  |  |
Special Tax Assessment |  |  | 1,600,000 |  |  |  |  |  |  |  |
Dubuque Minimum Assessment Agreement [Member] | Diamond Jo Dubuque [Member] |  |  |  |  |  |  |  |  |  |  |
Property Taxes Minimum Agreed Taxable Value |  |  | 57,900,000 |  |  |  |  |  |  |  |
Other Commitment, Minimum Annual Payments |  |  | 1,900,000 | 1,900,000 |  |  |  |  |  |  |
Dubuque Minimum Assessment Agreement [Member] | Diamond Jo Dubuque [Member] | Other Liabilities [Member] |  |  |  |  |  |  |  |  |  |  |
Other Commitment Obligation |  |  | 10,600,000 | 11,200,000 |  |  |  |  |  |  |
Other Commitment, Discount on Obligation |  |  | $ 1,500,000 | $ 1,700,000 |  |  |  |  |  |  |

X
- Definition Represents the number of additional slots for the agreement. + References No definition available. + Details
Name: | byd_AdditionalSlotUnits
Namespace Prefix: | byd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of debt issued by a counterparty. + References No definition available. + Details
Name: | byd_DebtIssuedByCounterparty
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the amount of cash payments on interest received. + References No definition available. + Details
Name: | byd_InterestPaymentsReceived
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents the number of food and beverage outlets under the agreement. + References No definition available. + Details
Name: | byd_NumberOfFoodAndBeverageOutlets
Namespace Prefix: | byd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Represents the number of new hotel rooms under the agreement. + References No definition available. + Details
Name: | byd_NumberOfHotelRooms
Namespace Prefix: | byd_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition The amount of other commitment discount on obligation. + References No definition available. + Details
Name: | byd_OtherCommitmentDiscountOnObligation
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The minimum annual payments of a commitment. + References No definition available. + Details
Name: | byd_OtherCommitmentMinimumAnnualPayments
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The amount of other commitment obligation. + References No definition available. + Details
Name: | byd_OtherCommitmentObligation
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The time period for other commitments. + References No definition available. + Details
Name: | byd_OtherCommitmentTimePeriod
Namespace Prefix: | byd_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

X
- Definition The cost of parking per space. + References No definition available. + Details
Name: | byd_ParkingFeePerSpace
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition Amount of expense for Project development, preopening, and writedowns. + References No definition available. + Details
Name: | byd_ProjectDevelopmentPreopeningAndWritedownsExpense
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition The minimum agreed taxable value of property taxes. + References No definition available. + Details
Name: | byd_PropertyTaxesMinimumAgreedTaxableValue
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition The amount of special tax assessment. + References No definition available. + Details
Name: | byd_SpecialTaxAssessment
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Represents sponsor fee percentage on slot and table game revenues. + References No definition available. + Details
Name: | byd_SponsorFeePercentageOnSlotAndTableGameRevenues
Namespace Prefix: | byd_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition Represents sponsor fee percentage on sports wagering revenue. + References No definition available. + Details
Name: | byd_SponsorFeePercentageOnSportsWageringRevenue
Namespace Prefix: | byd_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | duration

X
- Definition The annual amount of unrecorded commitment to fund pre development costs. + References No definition available. + Details
Name: | byd_UnrecordedCommitmentToFundPreDevelopmentCostsAnnualAmount
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Carrying value as of the balance sheet date of obligations incurred and payable, pertaining to costs that are statutory in nature, are incurred on contractual obligations, or accumulate over time and for which invoices have not yet been received or will not be rendered. Examples include taxes, interest, rent and utilities. Used to reflect the current portion of the liabilities (due within one year or within the normal operating cycle if longer). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(20)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
Name: | us-gaap_AccruedLiabilitiesCurrent
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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 Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(22)(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 470 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 1B -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481139/470-20-50-1B + Details
Name: | us-gaap_DebtInstrumentInterestRateStatedPercentage
Namespace Prefix: | us-gaap_
Data Type: | dtr-types:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Amount of increase (decrease) in allowance for credit loss on financing receivable. + References Reference 1: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 310 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 11B -Subparagraph (c) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481962/310-10-50-11B Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 326 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 13 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479319/326-20-50-13 + Details
Name: | us-gaap_FinancingReceivableAllowanceForCreditLossesPeriodIncreaseDecrease
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net amount (to the extent disclosed within this portion of the income statement) by which an insurance settlement exceeds incremental costs incurred from the event causing an interruption of business, plus the insurance award for earnings lost from the event, such as a natural catastrophe, explosion or fire. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483605/220-30-50-1 + Details
Name: | us-gaap_GainOnBusinessInterruptionInsuranceRecovery
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Indicates line item in statement of income or comprehensive income that includes gain from business interruption insurance recovery. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 220 -SubTopic 30 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483605/220-30-50-1 + Details
Name: | us-gaap_GainOnBusinessInterruptionInsuranceRecoveryStatementOfIncomeOrComprehensiveIncomeExtensibleEnumeration
Namespace Prefix: | us-gaap_
Data Type: | enum2:enumerationSetItemType
Balance Type: | na
Period Type: | duration

X
- References No definition available. + Details
Name: | us-gaap_IncomeStatementAbstract
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The amount recovered from insurance. These recoveries reduce costs and losses that are reported as a separate line item under operating expenses. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_InsuranceRecoveries
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Amount of interest income (expense) classified as operating. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 942 -SubTopic 220 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04(10)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478524/942-220-S99-1 + Details
Name: | us-gaap_InterestIncomeExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Term of lessee's operating lease renewal, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 842 -SubTopic 20 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Subparagraph (a)(3) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-3 + Details
Name: | us-gaap_LesseeOperatingLeaseRenewalTerm
Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | instant

X
- Definition Minimum amount of other commitment not otherwise specified in the taxonomy. Excludes commitments explicitly modeled in the taxonomy, including but not limited to, long-term and short-term purchase commitments, recorded and unrecorded purchase obligations, supply commitments, registration payment arrangements, leases, debt, product warranties, guarantees, environmental remediation obligations, and pensions. + References No definition available. + Details
Name: | us-gaap_OtherCommitment
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition The net amount of other operating income and expenses, the components of which are not separately disclosed on the income statement, from items that are associated with the entity's normal revenue producing operations. + References No definition available. + Details
Name: | us-gaap_OtherOperatingIncomeExpenseNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The cash inflow associated with the collection, including prepayments, of loans receivable issued for financing of goods and services. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-12 + Details
Name: | us-gaap_ProceedsFromCollectionOfLoansReceivable
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 41 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-41 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 270 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (i) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482964/270-10-50-1 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (ee) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 4: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 5: http://fasb.org/us-gaap/role/ref/otherTransitionRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 32 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-32 Reference 6: http://www.xbrl.org/2003/role/disclosureRef -Topic 924 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SAB Topic 11.L) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479941/924-10-S99-1 Reference 7: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 5 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-5 Reference 8: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 30 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-30 Reference 9: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 42 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-42 Reference 10: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 11: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 40 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-40 Reference 12: http://www.xbrl.org/2003/role/disclosureRef -Topic 280 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 22 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482810/280-10-50-22 Reference 13: http://www.xbrl.org/2003/role/disclosureRef -Topic 606 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147479806/606-10-50-4 + Details
Name: | us-gaap_RevenueFromContractWithCustomerIncludingAssessedTax
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Fees paid to advisors who provide certain management support and administrative oversight services including the organization and sale of stock, investment funds, limited partnerships and mutual funds. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 220 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03(3)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147483621/220-10-S99-2 + Details
Name: | us-gaap_SponsorFees
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Details
Name: | us-gaap_LiabilityForCatastropheClaimsByCatastrophicEventAxis=us-gaap_HurricaneMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=us-gaap_ManagementServiceMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BusinessAcquisitionAxis=byd_DevelopmentAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_ProductOrServiceAxis=byd_OnetimeDevelopmentFeeMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MinimumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RangeAxis=srt_MaximumMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=byd_DiamondJoDubuqueMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=byd_DiamondJoWorthMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=byd_MasterLeaseForPinnaclePurchaseAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=byd_AnnualDonationsForEducationInOperatingAreaMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | srt_RealEstateAndAccumulatedDepreciationDescriptionOfPropertyAxis=byd_KansasStarMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=byd_MulvaneSpecialTaxAssessmentForUtilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=byd_MulvaneSpecialTaxAssessmentForUtilitiesDiscountMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=byd_AdditionalMulvaneSpecialTaxAssessmentForUtilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_OtherCommitmentsAxis=byd_DubuqueMinimumAssessmentAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_BalanceSheetLocationAxis=us-gaap_OtherLiabilitiesMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |