Financial Information for Guarantor Subsidiaries and Non-Guarantor Subsidiaries - Statement of Operations and Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
Condensed Financial Statements
Revenue	$ 682.0	$ 658.7
Cost of services, cost of product sales and cost of instant games	256.3	255.4
Selling, general and administrative	142.3	145.9
Research and development	49.8	46.9
Employee termination and restructuring	2.7	8.2
Depreciation and amortization	180.6	184.2
Operating (loss) income	50.3	18.1
Interest expense	(165.7)	(164.3)
Other (expense) income, net	3.9	(2.5)
Net (loss) income before equity in (loss) income of subsidiaries and income taxes	(111.5)	(148.7)
Equity in (loss) income of subsidiaries	0.0	0.0
Income tax benefit (expense)	19.2	62.3
Net (loss) income	(92.3)	(86.4)
Other comprehensive (loss) income	(2.4)	(110.3)
Comprehensive (loss) income	(94.7)	(196.7)
Parent Company
Condensed Financial Statements
Revenue	0.0	0.0
Cost of services, cost of product sales and cost of instant games	0.0	0.0
Selling, general and administrative	24.1	14.9
Research and development	0.9	0.0
Employee termination and restructuring	0.0	1.8
Depreciation and amortization	12.8	7.8
Operating (loss) income	(37.8)	(24.5)
Interest expense	(0.1)	1.4
Other (expense) income, net	(25.6)	11.7
Net (loss) income before equity in (loss) income of subsidiaries and income taxes	(63.5)	(11.4)
Equity in (loss) income of subsidiaries	(51.0)	(138.3)
Income tax benefit (expense)	22.2	63.3
Net (loss) income	(92.3)	(86.4)
Other comprehensive (loss) income	(2.4)	(110.3)
Comprehensive (loss) income	(94.7)	(196.7)
SGI
Condensed Financial Statements
Revenue	115.3	111.3
Cost of services, cost of product sales and cost of instant games	82.9	81.3
Selling, general and administrative	11.2	16.2
Research and development	2.3	1.4
Employee termination and restructuring	0.1	0.2
Depreciation and amortization	10.8	9.9
Operating (loss) income	8.0	2.3
Interest expense	(34.8)	(36.2)
Other (expense) income, net	50.3	17.6
Net (loss) income before equity in (loss) income of subsidiaries and income taxes	23.5	(16.3)
Equity in (loss) income of subsidiaries	18.9	6.6
Income tax benefit (expense)	0.0	(0.1)
Net (loss) income	42.4	(9.8)
Other comprehensive (loss) income	(0.2)	(13.1)
Comprehensive (loss) income	42.2	(22.9)
Guarantor Subsidiaries
Condensed Financial Statements
Revenue	407.9	432.3
Cost of services, cost of product sales and cost of instant games	111.0	145.4
Selling, general and administrative	67.7	74.3
Research and development	39.3	37.8
Employee termination and restructuring	0.8	4.5
Depreciation and amortization	126.8	128.7
Operating (loss) income	62.3	41.6
Interest expense	(130.8)	(129.6)
Other (expense) income, net	(23.1)	(39.8)
Net (loss) income before equity in (loss) income of subsidiaries and income taxes	(91.6)	(127.8)
Equity in (loss) income of subsidiaries	6.9	(6.3)
Income tax benefit (expense)	0.0	0.0
Net (loss) income	(84.7)	(134.1)
Other comprehensive (loss) income	1.9	16.9
Comprehensive (loss) income	(82.8)	(117.2)
Non-Guarantor Subsidiaries
Condensed Financial Statements
Revenue	217.9	208.7
Cost of services, cost of product sales and cost of instant games	121.5	122.3
Selling, general and administrative	39.3	40.5
Research and development	7.3	7.7
Employee termination and restructuring	1.8	1.7
Depreciation and amortization	30.2	37.8
Operating (loss) income	17.8	(1.3)
Interest expense	0.0	0.1
Other (expense) income, net	2.3	8.0
Net (loss) income before equity in (loss) income of subsidiaries and income taxes	20.1	6.8
Equity in (loss) income of subsidiaries	0.0	0.0
Income tax benefit (expense)	(3.0)	(0.9)
Net (loss) income	17.1	5.9
Other comprehensive (loss) income	2.7	(119.6)
Comprehensive (loss) income	19.8	(113.7)
Eliminating Entries
Condensed Financial Statements
Revenue	(59.1)	(93.6)
Cost of services, cost of product sales and cost of instant games	(59.1)	(93.6)
Selling, general and administrative	0.0	0.0
Research and development	0.0	0.0
Employee termination and restructuring	0.0	0.0
Depreciation and amortization	0.0	0.0
Operating (loss) income	0.0	0.0
Interest expense	0.0	0.0
Other (expense) income, net	0.0	0.0
Net (loss) income before equity in (loss) income of subsidiaries and income taxes	0.0	0.0
Equity in (loss) income of subsidiaries	25.2	138.0
Income tax benefit (expense)	0.0	0.0
Net (loss) income	25.2	138.0
Other comprehensive (loss) income	(4.4)	115.8
Comprehensive (loss) income	$ 20.8	$ 253.8