v2.4.0.6
Consolidation of Certain Interests (Supplemental Pro Forma Information due to Consolidation of Borgata) (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 12 Months Ended 9 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
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2010
Borgata Stub Period
Dec. 31, 2010
Adjustments
Dec. 31, 2010
Boyd Gaming Corporation Pro Forma (Borgata)
Business Acquisition [Line Items]                            
Gaming                 $ 2,110,233 $ 1,986,644 $ 1,812,487 $ 137,831 $ 0 $ 1,950,318
Food and beverage                 417,506 388,148 347,588 31,218 0 378,806
Room                 264,903 246,209 211,046 24,154 0 235,200
Other                 145,460 135,176 123,603 9,179 0 132,782
Gross revenues                 2,938,102 2,756,177 2,494,724 202,382 0 2,697,106
Less promotional allowances                 450,676 419,939 353,825 44,093 0 397,918
Net revenues 625,842 613,279 615,222 633,083 606,674 590,215 574,403 564,946 2,487,426 2,336,238 2,140,899 158,289 0 2,299,188
Gaming                 1,011,064 924,451 859,818 59,861 0 919,679
Food and beverage                 219,921 200,165 180,840 13,500 0 194,340
Room                 55,531 56,111 49,323 2,185 0 51,508
Other                 111,075 108,907 99,458 7,127 0 106,585
Selling, general and administrative                 452,926 394,991 369,217 28,981 0 398,198
Maintenance and utilities                 155,016 153,512 140,722 13,522 0 154,244
Depreciation and amortization                 214,332 195,343 199,275 16,754 0 216,029
Corporate expense                 50,719 48,962 48,861 0 0 48,861
Preopening expense                 11,541 6,634 7,459 0 0 7,459
Impairments and other operating items                     736 0 0 736
Other operating items, net                     3,977 68 0 4,045
Total operating costs and expenses                 3,342,301 2,103,134 1,959,686 141,998 0 2,101,684
Operating income from Borgata                     8,146 0 (8,146) 0
Operating income (loss) (1,038,044) 48,348 58,239 76,582 54,846 68,164 61,990 48,104 (854,875) 233,104 189,359 16,291 (8,146) 197,504
Interest income                 (1,169) (46) (5) 0 0 (5)
Interest expense, net of amounts capitalized                 290,004 250,731 180,558 5,060 0 185,618
Other income                     (9,520) 0 0 (9,520)
(Gain) loss on early retirements of debt                 0 14 (2,758) 0 0 (2,758)
Gain on controlling interest in Borgata                     (2,535) 0 0 (2,535)
Other non-operating expenses from Borgata, net                     3,133 0 (3,133) 0
Total other expense, net                 288,972 239,382 168,873 5,060 (3,133) 170,800
Income (loss) before income taxes                 (1,143,847) (6,278) 20,486 11,231 (5,013) 26,704
Income taxes                 220,772 (1,721) (8,236) (1,206) 0 (9,442)
Net income (loss)                 (923,075) (7,999) 12,250 10,025 (5,013) 17,262
Net (income) loss attributable to noncontrolling interest                 14,210 4,145 (1,940) 0 (5,012) (6,952)
Net income (loss) attributable to Boyd Gaming Corporation $ (899,898) $ (15,796) $ 977 $ 5,852 $ (491) $ 3,109 $ (2,951) $ (3,521) $ (908,865) $ (3,854) $ 10,310 $ 10,025 $ (10,025) $ 10,310