Financial Information for Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Supplemental Condensed Consolidating Statement of Income) (Details) - USD ($) $ in Millions		3 Months Ended			6 Months Ended
		Jun. 30, 2015		Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Condensed Financial Statements
Revenue		$ 691.5		$ 416.9	$ 1,350.2	$ 805.0
Cost of services, cost of product sales and cost of instant games (1)	[1]	275.3		192.4	530.7	375.2
Selling, general and administrative		140.9		95.2	286.8	187.0
Research and development		48.0		24.8	94.9	50.7
Employee termination and restructuring		5.2		4.9	13.4	10.5
Depreciation and amortization		222.2		96.0	406.4	190.1
Operating income (loss)		(0.1)		3.6	18.0	(8.5)
Interest expense		(166.4)		(49.3)	(330.7)	(97.2)
Other (expense) income, net		(1.0)		(22.0)	(3.5)	0.9
Net loss before income taxes		(167.5)		(67.7)	(316.2)	(104.8)
Equity in (loss) income of subsidiaries		0.0		0.0	0.0	0.0
Income tax benefit (expense)		65.3		(4.7)	127.6	(12.6)
Net loss		(102.2)		(72.4)	(188.6)	(117.4)
Other comprehensive (loss) income		23.1		4.2	(87.1)	3.7
Comprehensive (loss) income		(79.1)		(68.2)	(275.7)	(113.7)
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 (1)		0.0	[1]	0.0	0.0	0.0
Selling, general and administrative		16.7		17.0	31.6	32.1
Research and development		0.0		0.0	0.0	0.0
Employee termination and restructuring		1.4		2.0	3.2	2.0
Depreciation and amortization		8.1		1.8	16.0	5.5
Operating income (loss)		(26.2)		(20.8)	(50.8)	(39.6)
Interest expense		(5.3)		3.1	(3.9)	(2.3)
Other (expense) income, net		6.2		(17.3)	18.0	(32.6)
Net loss before income taxes		(25.3)		(35.0)	(36.7)	(74.5)
Equity in (loss) income of subsidiaries		(143.0)		(32.8)	(281.3)	(32.9)
Income tax benefit (expense)		66.1		(4.6)	129.4	(10.0)
Net loss		(102.2)		(72.4)	(188.6)	(117.4)
Other comprehensive (loss) income		23.1		4.2	(87.1)	3.7
Comprehensive (loss) income		(79.1)		(68.2)	(275.7)	(113.7)
SGI
Condensed Financial Statements
Revenue		106.4		109.8	217.6	210.2
Cost of services, cost of product sales and cost of instant games (1)	[1]	79.0		80.8	160.3	155.9
Selling, general and administrative		18.4		17.5	34.6	34.1
Research and development		1.4		0.6	2.8	1.1
Employee termination and restructuring		0.7		0.0	0.9	0.2
Depreciation and amortization		9.8		10.1	19.6	20.3
Operating income (loss)		(2.9)		0.8	(0.6)	(1.4)
Interest expense		(83.1)		(4.4)	(119.3)	(46.5)
Other (expense) income, net		18.3		(18.8)	35.9	(3.2)
Net loss before income taxes		(67.7)		(22.4)	(84.0)	(51.1)
Equity in (loss) income of subsidiaries		22.7		20.6	29.3	35.1
Income tax benefit (expense)		(0.1)		(0.1)	(0.1)	(0.1)
Net loss		(45.1)		(1.9)	(54.8)	(16.1)
Other comprehensive (loss) income		3.3		(4.9)	(9.8)	3.0
Comprehensive (loss) income		(41.8)		(6.8)	(64.6)	(13.1)
Guarantor Subsidiaries
Condensed Financial Statements
Revenue		430.6		227.6	862.9	433.8
Cost of services, cost of product sales and cost of instant games (1)	[1]	139.5		95.7	284.8	179.4
Selling, general and administrative		70.8		41.8	145.1	82.1
Research and development		39.3		20.1	77.1	41.6
Employee termination and restructuring		2.4		2.5	6.9	4.1
Depreciation and amortization		170.8		61.7	299.6	119.8
Operating income (loss)		7.8		5.8	49.4	6.8
Interest expense		(77.9)		(47.7)	(207.3)	(47.9)
Other (expense) income, net		(29.0)		1.5	(68.8)	(0.7)
Net loss before income taxes		(99.1)		(40.4)	(226.7)	(41.8)
Equity in (loss) income of subsidiaries		9.5		(3.6)	3.3	(7.0)
Income tax benefit (expense)		2.9		0.0	2.9	0.0
Net loss		(86.7)		(44.0)	(220.5)	(48.8)
Other comprehensive (loss) income		(25.4)		0.0	(8.5)	(0.3)
Comprehensive (loss) income		(112.1)		(44.0)	(229.0)	(49.1)
Non-Guarantor Subsidiaries
Condensed Financial Statements
Revenue		261.5		140.2	470.3	278.7
Cost of services, cost of product sales and cost of instant games (1)	[1]	163.8		76.6	286.2	157.6
Selling, general and administrative		35.0		18.9	75.5	38.7
Research and development		7.3		4.1	15.0	8.0
Employee termination and restructuring		0.7		0.4	2.4	4.2
Depreciation and amortization		33.5		22.4	71.2	44.5
Operating income (loss)		21.2		17.8	20.0	25.7
Interest expense		(0.1)		(0.3)	(0.2)	(0.5)
Other (expense) income, net		3.5		12.7	11.4	37.4
Net loss before income taxes		24.6		30.2	31.2	62.6
Equity in (loss) income of subsidiaries		0.0		0.0	0.0	0.0
Income tax benefit (expense)		(3.6)		0.0	(4.6)	(2.5)
Net loss		21.0		30.2	26.6	60.1
Other comprehensive (loss) income		42.4		9.7	(77.2)	10.1
Comprehensive (loss) income		63.4		39.9	(50.6)	70.2
Eliminating Entries
Condensed Financial Statements
Revenue		(107.0)		(60.7)	(200.6)	(117.7)
Cost of services, cost of product sales and cost of instant games (1)	[1]	(107.0)		(60.7)	(200.6)	(117.7)
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 income (loss)		0.0		0.0	0.0	0.0
Interest expense		0.0		0.0	0.0	0.0
Other (expense) income, net		0.0		(0.1)	0.0	0.0
Net loss before income taxes		0.0		(0.1)	0.0	0.0
Equity in (loss) income of subsidiaries		110.8		15.8	248.7	4.8
Income tax benefit (expense)		0.0		0.0	0.0	0.0
Net loss		110.8		15.7	248.7	4.8
Other comprehensive (loss) income		(20.3)		(4.8)	95.5	(12.8)
Comprehensive (loss) income		$ 90.5		$ 10.9	$ 344.2	$ (8.0)

[1] Exclusive of depreciation and amortization.