Financial Information for Guarantor Subsidiaries and Non-Guarantor Subsidiaries - Statement of Operations and Comprehensive Loss (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Condensed Financial Statements
Revenue	$ 729.2	$ 691.5	$ 1,411.2	$ 1,350.2
Cost of services, cost of product sales and cost of instant games	276.2	275.3	532.5	530.7
Selling, general and administrative	144.9	140.9	287.2	286.8
Research and development	51.7	48.0	101.5	94.9
Employee termination and restructuring	4.2	5.2	6.9	13.4
Depreciation and amortization	193.1	222.2	373.7	406.4
Operating (loss) income	59.1	(0.1)	109.4	18.0
Interest expense	(165.3)	(166.4)	(331.0)	(330.7)
Gain on early extinguishment of debt	25.2	0.0	25.2	0.0
Other (expense) income, net	9.7	(1.0)	13.6	(3.5)
Net (loss) income before equity in (loss) income of subsidiaries and income taxes	(71.3)	(167.5)	(182.8)	(316.2)
Equity in (loss) income of subsidiaries	0.0	0.0	0.0	0.0
Income tax benefit (expense)	19.6	65.3	38.8	127.6
Net (loss) income	(51.7)	(102.2)	(144.0)	(188.6)
Other comprehensive (loss) income	(30.2)	23.1	(32.6)	(87.1)
Comprehensive (loss) income	(81.9)	(79.1)	(176.6)	(275.7)
Reportable Legal Entities | Parent Company
Condensed Financial Statements
Revenue	0.0	0.0	0.0	0.0
Cost of services, cost of product sales and cost of instant games	0.0	0.0	0.0	0.0
Selling, general and administrative	36.9	16.7	61.0	31.6
Research and development	1.9	0.0	2.8	0.0
Employee termination and restructuring	0.1	1.4	0.1	3.2
Depreciation and amortization	13.0	8.1	25.8	16.0
Operating (loss) income	(51.9)	(26.2)	(89.7)	(50.8)
Interest expense	0.0	(5.3)	(0.1)	(3.9)
Gain on early extinguishment of debt			0.0
Other (expense) income, net	(24.7)	6.2	(50.3)	18.0
Net (loss) income before equity in (loss) income of subsidiaries and income taxes	(76.6)	(25.3)	(140.1)	(36.7)
Equity in (loss) income of subsidiaries	0.0	(143.0)	(51.0)	(281.3)
Income tax benefit (expense)	24.9	66.1	47.1	129.4
Net (loss) income	(51.7)	(102.2)	(144.0)	(188.6)
Other comprehensive (loss) income	(30.2)	23.1	(32.6)	(87.1)
Comprehensive (loss) income	(81.9)	(79.1)	(176.6)	(275.7)
Reportable Legal Entities | SGI
Condensed Financial Statements
Revenue	126.4	106.4	241.7	217.6
Cost of services, cost of product sales and cost of instant games	86.1	79.0	169.0	160.3
Selling, general and administrative	11.7	18.4	22.9	34.6
Research and development	2.3	1.4	4.6	2.8
Employee termination and restructuring	(0.1)	0.7	0.0	0.9
Depreciation and amortization	10.3	9.8	21.1	19.6
Operating (loss) income	16.1	(2.9)	24.1	(0.6)
Interest expense	(35.1)	(83.1)	(69.9)	(119.3)
Gain on early extinguishment of debt	25.2		25.2
Other (expense) income, net	52.5	18.3	102.8	35.9
Net (loss) income before equity in (loss) income of subsidiaries and income taxes	58.7	(67.7)	82.2	(84.0)
Equity in (loss) income of subsidiaries	11.3	22.7	30.2	29.3
Income tax benefit (expense)	0.0	(0.1)	0.0	(0.1)
Net (loss) income	70.0	(45.1)	112.4	(54.8)
Other comprehensive (loss) income	3.2	3.3	3.0	(9.8)
Comprehensive (loss) income	73.2	(41.8)	115.4	(64.6)
Reportable Legal Entities | Guarantor Subsidiaries
Condensed Financial Statements
Revenue	408.6	430.6	816.5	862.9
Cost of services, cost of product sales and cost of instant games	108.8	139.5	219.8	284.8
Selling, general and administrative	51.7	70.8	119.4	145.1
Research and development	39.1	39.3	78.4	77.1
Employee termination and restructuring	3.3	2.4	4.1	6.9
Depreciation and amortization	141.1	170.8	267.9	299.6
Operating (loss) income	64.6	7.8	126.9	49.4
Interest expense	(130.1)	(77.9)	(260.9)	(207.3)
Gain on early extinguishment of debt	0.0		0.0
Other (expense) income, net	(24.2)	(29.0)	(47.3)	(68.8)
Net (loss) income before equity in (loss) income of subsidiaries and income taxes	(89.7)	(99.1)	(181.3)	(226.7)
Equity in (loss) income of subsidiaries	9.3	9.5	16.2	3.3
Income tax benefit (expense)	0.0	2.9	0.0	2.9
Net (loss) income	(80.4)	(86.7)	(165.1)	(220.5)
Other comprehensive (loss) income	(8.1)	(25.4)	(6.2)	(8.5)
Comprehensive (loss) income	(88.5)	(112.1)	(171.3)	(229.0)
Reportable Legal Entities | Non-Guarantor Subsidiaries
Condensed Financial Statements
Revenue	265.5	261.5	483.4	470.3
Cost of services, cost of product sales and cost of instant games	152.6	163.8	274.1	286.2
Selling, general and administrative	44.6	35.0	83.9	75.5
Research and development	8.4	7.3	15.7	15.0
Employee termination and restructuring	0.9	0.7	2.7	2.4
Depreciation and amortization	28.7	33.5	58.9	71.2
Operating (loss) income	30.3	21.2	48.1	20.0
Interest expense	(0.1)	(0.1)	(0.1)	(0.2)
Gain on early extinguishment of debt			0.0
Other (expense) income, net	6.1	3.5	8.4	11.4
Net (loss) income before equity in (loss) income of subsidiaries and income taxes	36.3	24.6	56.4	31.2
Equity in (loss) income of subsidiaries	0.0	0.0	0.0	0.0
Income tax benefit (expense)	(5.3)	(3.6)	(8.3)	(4.6)
Net (loss) income	31.0	21.0	48.1	26.6
Other comprehensive (loss) income	(33.4)	42.4	(30.7)	(77.2)
Comprehensive (loss) income	(2.4)	63.4	17.4	(50.6)
Eliminating Entries
Condensed Financial Statements
Revenue	(71.3)	(107.0)	(130.4)	(200.6)
Cost of services, cost of product sales and cost of instant games	(71.3)	(107.0)	(130.4)	(200.6)
Selling, general and administrative	0.0	0.0	0.0	0.0
Research and development	0.0	0.0	0.0	0.0
Employee termination and restructuring	0.0	0.0	0.0	0.0
Depreciation and amortization	0.0	0.0	0.0	0.0
Operating (loss) income	0.0	0.0	0.0	0.0
Interest expense	0.0	0.0	0.0	0.0
Gain on early extinguishment of debt			0.0
Other (expense) income, net	0.0	0.0	0.0	0.0
Net (loss) income before equity in (loss) income of subsidiaries and income taxes	0.0	0.0	0.0	0.0
Equity in (loss) income of subsidiaries	(20.6)	110.8	4.6	248.7
Income tax benefit (expense)	0.0	0.0	0.0	0.0
Net (loss) income	(20.6)	110.8	4.6	248.7
Other comprehensive (loss) income	38.3	(20.3)	33.9	95.5
Comprehensive (loss) income	$ 17.7	$ 90.5	$ 38.5	$ 344.2