Impairment and Restructuring Charges - Additional Information (Detail) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		12 Months Ended							3 Months Ended			12 Months Ended		3 Months Ended	12 Months Ended	3 Months Ended	12 Months Ended
	Dec. 31, 2012	Sep. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2011 Pre-tax non-cash asset impairments	Jun. 30, 2011 Separation-related charges	Jun. 30, 2011 Developed licensed or acquired technologies	Jun. 30, 2011 Brands	Jun. 30, 2011 Other Asset Impairments	Jun. 30, 2012 September 30, 2011 Quarter charges	Sep. 30, 2011 September 30, 2011 Quarter charges Facility	Jun. 30, 2011 September 30, 2011 Quarter charges	Jun. 30, 2013 September 30, 2011 Quarter charges Facility	Jun. 30, 2011 September 30, 2011 Quarter charges	Sep. 30, 2011 September 30, 2011 Quarter charges Separation-related charges	Jun. 30, 2013 September 30, 2011 Quarter charges Separation-related charges	Sep. 30, 2011 September 30, 2011 Quarter charges Facility closing	Jun. 30, 2013 September 30, 2011 Quarter charges Facility closing	Jun. 30, 2011 Netherlands Orion Gaming Facility	Jun. 30, 2011 Venezuela Receivables
Restructuring Cost and Reserve [Line Items]
Impairment and restructuring charges	$ 2.5	$ 14.0	$ 9.7	$ 22.2		$ 3.8					$ 9.7				$ 5.9		$ 3.8
Impairment and restructuring charges, per diluted share	$ 0.03	$ 0.17	$ 0.12	$ 0.24		$ 0.04					$ 0.12
Non-cash asset impairments			0.6	4.0	18.4		11.0	3.4	0.2										2.4	1.4
Non-cash asset impairments, per diluted share			$ 0.01	$ 0.05	$ 0.20
Number of facilities to close											2		2
Reduction in organizational staffing											10.00%
Impairment and restructuring charges recorded in fiscal 2011			9.1	3.8										3.8
Impairment and restructuring charges, payment										1.4		2.4				5.9		3.2
Impairment and restructuring charges, cash-based													$ 9.1