Segment Information (Certain Segment Operating Data and Other) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items]
Net revenues	$ 615,222	$ 574,403	$ 1,248,305	$ 1,139,349
Depreciation and amortization	50,702	48,488	100,716	99,072
Corporate expense	13,009	12,264	25,880	25,544
Preopening expenses	2,210	1,741	3,870	3,572
Other operating charges, net	(2,196)	2,262	(1,949)	6,969
Operating income	58,239	61,990	134,821	110,094
Reportable Segment
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items]
Net revenues	614,070	572,928	1,245,739	1,136,333
Adjusted EBITDA	124,382	128,869	268,311	250,409
Las Vegas Locals
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items]
Net revenues	148,987	151,836	303,776	306,355
Adjusted EBITDA	34,535	38,570	73,021	78,213
Downtown Las Vegas
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items]
Net revenues	55,939	56,585	112,947	112,251
Adjusted EBITDA	8,109	9,366	16,541	18,370
Midwest and South
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items]
Net revenues	233,728	181,751	477,450	365,881
Adjusted EBITDA	51,003	42,276	109,133	83,487
Atlantic City
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items]
Net revenues	175,416	182,756	351,566	351,846
Adjusted EBITDA	30,735	38,657	69,616	70,339
Other
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items]
Net revenues	1,152	1,475	2,566	3,016
Unallocated to Segment
Segment Reporting, Certain Operating Data and Reconciling Item for Adjusted EBITDA from Segment to Consolidated [Line Items]
Depreciation and amortization	50,702	48,488	100,716	99,072
Corporate expense	13,009	12,264	25,880	25,544
Preopening expenses	2,210	1,741	3,870	3,572
Other operating charges, net	(2,196)	2,262	(1,949)	6,969
Other	2,418	2,124	4,973	5,158
Total other operating costs and expenses	$ 66,143	$ 66,879	$ 133,490	$ 140,315