SELECTED QUARTERLY FINANCIAL DATA (UNAUDITED) (Details) (USD $)	3 Months Ended								12 Months Ended
	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2012	Sep. 30, 2012	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Statement of Operations Data:
Revenues	$ 342,211,000	$ 338,399,000	$ 285,193,000	$ 249,289,000	$ 264,402,000	$ 259,147,000	$ 238,339,000	$ 235,151,000	$ 1,215,092,000	$ 997,039,000	$ 879,759,000
Cost of revenues	134,026,000	126,844,000	105,281,000	85,125,000	91,695,000	91,411,000	81,540,000	86,347,000
Selling, general and administrative	91,491,000	88,248,000	90,986,000	72,427,000	72,099,000	72,218,000	67,852,000	64,516,000	343,152,000	276,685,000	255,043,000
Research and development costs	36,972,000	36,677,000	32,709,000	29,504,000	30,326,000	29,098,000	26,599,000	25,095,000	135,862,000	111,118,000	96,182,000
Income from operations before income taxes	33,919,000	43,769,000	34,030,000	54,122,000	58,502,000	55,933,000	52,467,000	49,373,000	165,840,000	216,275,000	164,459,000
Income tax expense	(21,597,000)	(16,200,000)	(12,105,000)	(16,172,000)	(21,229,000)	(17,527,000)	(19,389,000)	(18,429,000)	(66,074,000)	(76,574,000)	(63,549,000)
Net income	12,322,000	27,569,000	21,925,000	37,950,000	37,273,000	38,406,000	33,078,000	30,944,000	99,766,000	139,701,000	100,910,000
Less net income (loss) attributable to noncontrolling interests	161,000	125,000	714,000	166,000	(64,000)	(43,000)	(48,000)	(1,588,000)	1,166,000	(1,743,000)	(238,000)
Net income attributable to Bally Technologies, Inc.	12,161,000	27,444,000	21,211,000	37,784,000	37,337,000	38,449,000	33,126,000	32,532,000	98,600,000	141,444,000	101,148,000
Basic earnings per share attributable to Bally Technologies, Inc.:
Basic earnings per share (in dollars per share)	$ 0.32	$ 0.71	$ 0.55	$ 0.98	$ 0.96	$ 0.95	$ 0.82	$ 0.80	$ 2.56	$ 3.53	$ 2.35
Diluted earnings per share attributable to Bally Technologies, Inc.:
Diluted earnings per share (in dollars per share)	$ 0.31	$ 0.70	$ 0.54	$ 0.97	$ 0.95	$ 0.93	$ 0.80	$ 0.77	$ 2.52	$ 3.45	$ 2.28
Restructuring and acquisition-related costs									60,800,000
Amortization of purchased intangible asset									33,000,000
Debt issuance costs write offs									7,300,000
Write-off of net operating loss carryforwards									$ 2,200,000