v2.4.0.8

Summary of Significant Accounting Policies (Promotional Allowances) (Details) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012
Allowances [Line Items] |  |  |  |
Promotional allowances | $ 125,172 | $ 119,349 | $ 348,121 | $ 340,512
Cost of promotional allowances | 69,112 | 70,275 | 197,998 | 196,767
Rooms |  |  |  |
Allowances [Line Items] |  |  |  |
Promotional allowances | 39,296 | 39,737 | 109,737 | 110,411
Cost of promotional allowances | 15,361 | 16,980 | 44,505 | 46,079
Food and Beverage |  |  |  |
Allowances [Line Items] |  |  |  |
Promotional allowances | 52,708 | 48,975 | 153,361 | 144,094
Cost of promotional allowances | 47,252 | 46,364 | 136,435 | 131,871
Other Products and Services |  |  |  |
Allowances [Line Items] |  |  |  |
Promotional allowances | 33,168 | 30,637 | 85,023 | 86,007
Cost of promotional allowances | $ 6,499 | $ 6,931 | $ 17,058 | $ 18,817

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

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- Definition Cost of Promotional Allowances + References No definition available. + Details
Name: | byd_CostOfPromotionalAllowances
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition This element represents the estimated retail value of accommodations, food and beverage, and other services furnished to guests without charge. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 924 -SubTopic 605 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6472957&loc=d3e51325-107943 + Details
Name: | us-gaap_PromotionalAllowances
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration