v2.4.0.6

Asset Acquisitions Asset Acquisitions (Acquired Intangible Assets) (Details) (Peninsula Gaming, USD $) In Thousands, unless otherwise specified | 0 Months Ended
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Nov. 20, 2012
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items] |
Total intangible assets acquired | $ 577,501
Customer Relationships |
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items] |
Acquired finite-lived intangible assets | 136,300
Acquired intangible assets, useful lives | 4 years 10 months 24 days
Noncompete Agreements |
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items] |
Acquired finite-lived intangible assets | 3,200
Acquired intangible assets, useful lives | 10 months 24 days
Trademarks |
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items] |
Acquired indefinite-lived intangible assets | 50,800
Gaming License Rights |
Finite-Lived and Indefinite-Lived Intangible Assets Acquired as Part of Business Combination [Line Items] |
Acquired indefinite-lived intangible assets | $ 387,201

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- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Finite-Lived Intangible Assets + References No definition available. + Details
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Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Indefinite-Lived Intangible Assets + References No definition available. + Details
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Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Business Combination, Recognized Identifiable Assets Acquired and Liabilities Assumed, Intangible Assets, Other than Goodwill + References No definition available. + Details
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Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Details
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Namespace Prefix: | byd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16265-109275 + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration