v2.4.0.6

Segment Information (Certain Segment Operating Data and Other) (Details) (USD $) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2011 | Sep. 30, 2011 | Jun. 30, 2011 | Mar. 31, 2011 | Dec. 31, 2012 segment | Dec. 31, 2011 | Dec. 31, 2010
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenues | $ 625,842,000 | $ 613,279,000 | $ 615,222,000 | $ 633,083,000 | $ 606,674,000 | $ 590,215,000 | $ 574,403,000 | $ 564,946,000 | $ 2,487,426,000 | $ 2,336,238,000 | $ 2,140,899,000
Operating income from Borgata |  |  |  |  |  |  |  |  | 0 | 0 | 8,146,000
Adjusted EBITDA |  |  |  |  |  |  |  |  | 492,051,000 | 506,289,000 | 459,814,000
Depreciation and amortization |  |  |  |  |  |  |  |  | 214,332,000 | 195,343,000 | 199,275,000
Corporate expense |  |  |  |  |  |  |  |  | 50,719,000 | 48,962,000 | 48,861,000
Preopening expense |  |  |  |  |  |  |  |  | 11,541,000 | 6,634,000 | 7,459,000
Other operating items, net |  |  |  |  |  |  |  |  | 6,650,000 | 8,007,000 | 4,713,000
Operating income (loss) | (1,038,044,000) | 48,348,000 | 58,239,000 | 76,582,000 | 54,846,000 | 68,164,000 | 61,990,000 | 48,104,000 | (854,875,000) | 233,104,000 | 189,359,000
Number of reportable segments |  |  |  |  |  |  |  |  | 5 |  |
Reportable Segment |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  | 2,482,819,000 | 2,330,844,000 | 2,134,495,000
Adjusted EBITDA |  |  |  |  |  |  |  |  | 492,051,000 | 506,289,000 | 451,668,000
Las Vegas Locals |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  | 591,306,000 | 604,965,000 | 607,366,000
Adjusted EBITDA |  |  |  |  |  |  |  |  | 128,742,000 | 145,848,000 | 137,464,000
Downtown Las Vegas |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  | 224,178,000 | 224,251,000 | 218,222,000
Adjusted EBITDA |  |  |  |  |  |  |  |  | 32,832,000 | 35,214,000 | 34,227,000
Midwest and South |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  | 924,188,000 | 771,354,000 | 728,767,000
Adjusted EBITDA |  |  |  |  |  |  |  |  | 192,349,000 | 167,101,000 | 143,699,000
Peninsula Gaming |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  | 56,925,000 | 0 | 0
Adjusted EBITDA |  |  |  |  |  |  |  |  | 21,152,000 | 0 | 0
Atlantic City |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  | 686,222,000 | 730,274,000 | 580,140,000
Adjusted EBITDA |  |  |  |  |  |  |  |  | 116,976,000 | 158,126,000 | 136,278,000
Other |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Net revenues |  |  |  |  |  |  |  |  | 4,607,000 | 5,394,000 | 6,404,000
Unallocated to Segment |  |  |  |  |  |  |  |  |  |  |
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items] |  |  |  |  |  |  |  |  |  |  |
Depreciation and amortization |  |  |  |  |  |  |  |  | 214,332,000 | 195,343,000 | 199,275,000
Corporate expense |  |  |  |  |  |  |  |  | 50,719,000 | 48,962,000 | 48,861,000
Preopening expense |  |  |  |  |  |  |  |  | 11,541,000 | 6,634,000 | 7,459,000
Other operating items, net |  |  |  |  |  |  |  |  | 1,053,526,000 | 14,058,000 | 4,713,000
Other |  |  |  |  |  |  |  |  | 16,808,000 | 8,188,000 | 10,147,000
Total other operating costs and expenses |  |  |  |  |  |  |  |  | $ 1,346,926,000 | $ 273,185,000 | $ 270,455,000

X
- Definition Adjusted EBITDA + References No definition available. + Details
Name: | byd_AdjustedEbitda
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Corporate expense + References No definition available. + Details
Name: | byd_CorporateExpense
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Miscellaneous Expense, Operating + References No definition available. + Details
Name: | byd_MiscellaneousExpenseOperating
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Operating income from unconsolidated affiliate + References No definition available. + Details
Name: | byd_OperatingIncomeFromUnconsolidatedAffiliate
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Other Operating Cost and Expense + References No definition available. + Details
Name: | byd_OtherOperatingCostAndExpense
Namespace Prefix: | byd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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

X
- Definition The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 95 -Paragraph 28 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Accounting Principles Board Opinion (APB) -Number 12 -Paragraph 5 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
Name: | us-gaap_DepreciationAndAmortization
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Number of segments reported by the entity. A reportable segment is a component of an entity for which there is an accounting requirement to report separate financial information on that component in the entity's financial statements. + References No definition available. + Details
Name: | us-gaap_NumberOfReportableSegments
Namespace Prefix: | us-gaap_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | duration

X
- Definition The net result for the period of deducting operating expenses from operating revenues. + References No definition available. + Details
Name: | us-gaap_OperatingIncomeLoss
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition The total amount of other operating cost and expense items that are associated with the entity's normal revenue producing operation. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 3 -Article 5 + Details
Name: | us-gaap_OtherCostAndExpenseOperating
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Expenditures associated with opening new locations which are noncapital in nature and expensed as incurred. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.3) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 + Details
Name: | us-gaap_PreOpeningCosts
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
Name: | us-gaap_SalesRevenueNet
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration