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
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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

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