Financial Information for Guarantor Subsidiaries and Non-Guarantor Subsidiaries (Supplemental Condensed Consolidating Statement of Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Condensed Financial Statements
Revenue	$ 658.7		$ 388.1
Cost of services, cost of product sales and cost of instant games (1)	255.4	[1]	182.8	[1]
Selling, general and administrative	145.9		91.8
Research and development	46.9		25.9
Employee termination and restructuring	8.2		5.6
Depreciation and amortization	184.2		94.1
Operating income (loss)	18.1		(12.1)
Interest income (expense)	(164.3)		(47.9)
Other (expense) income, net	(2.5)		22.9
Net loss before income taxes	(148.7)		(37.1)
Equity in (loss) income of subsidiaries	0		0
Income tax benefit (expense)	62.3		(7.9)
Net loss	(86.4)		(45.0)
Other comprehensive (loss) income	(110.3)		(0.5)
Comprehensive (loss) income	(196.7)		(45.5)
Parent Company
Condensed Financial Statements
Revenue	0		0
Cost of services, cost of product sales and cost of instant games (1)	0	[1]	0
Selling, general and administrative	14.9		15.1
Research and development	0		0
Employee termination and restructuring	1.8		0
Depreciation and amortization	7.8		3.7
Operating income (loss)	(24.5)		(18.8)
Interest income (expense)	1.4		(5.4)
Other (expense) income, net	11.7		(15.3)
Net loss before income taxes	(11.4)		(39.5)
Equity in (loss) income of subsidiaries	(138.3)		(0.1)
Income tax benefit (expense)	63.3		(5.4)
Net loss	(86.4)		(45.0)
Other comprehensive (loss) income	(110.3)		(0.5)
Comprehensive (loss) income	(196.7)		(45.5)
SGI
Condensed Financial Statements
Revenue	111.3		100.4
Cost of services, cost of product sales and cost of instant games (1)	81.3	[1]	75.2	[1]
Selling, general and administrative	16.2		16.6
Research and development	1.4		0.5
Employee termination and restructuring	0.2		0.2
Depreciation and amortization	9.9		10.2
Operating income (loss)	2.3		(2.3)
Interest income (expense)	(36.2)		(42.1)
Other (expense) income, net	17.6		15.7
Net loss before income taxes	(16.3)		(28.7)
Equity in (loss) income of subsidiaries	6.6		14.5
Income tax benefit (expense)	(0.1)		0
Net loss	(9.8)		(14.2)
Other comprehensive (loss) income	(13.1)		7.9
Comprehensive (loss) income	(22.9)		(6.3)
Guarantor Subsidiaries
Condensed Financial Statements
Revenue	432.3		206.2
Cost of services, cost of product sales and cost of instant games (1)	145.4	[1]	83.7	[1]
Selling, general and administrative	74.3		40.3
Research and development	37.8		21.5
Employee termination and restructuring	4.5		1.6
Depreciation and amortization	128.7		58.1
Operating income (loss)	41.6		1.0
Interest income (expense)	(129.6)		(0.2)
Other (expense) income, net	(39.8)		(2.3)
Net loss before income taxes	(127.8)		(1.5)
Equity in (loss) income of subsidiaries	(6.3)		(3.5)
Income tax benefit (expense)	0		0
Net loss	(134.1)		(5.0)
Other comprehensive (loss) income	16.9		(0.3)
Comprehensive (loss) income	(117.2)		(5.3)
Non-Guarantor Subsidiaries
Condensed Financial Statements
Revenue	208.7		138.5
Cost of services, cost of product sales and cost of instant games (1)	122.3	[1]	80.9	[1]
Selling, general and administrative	40.5		19.8
Research and development	7.7		3.9
Employee termination and restructuring	1.7		3.8
Depreciation and amortization	37.8		22.1
Operating income (loss)	(1.3)		8.0
Interest income (expense)	0.1		(0.2)
Other (expense) income, net	8.0		24.7
Net loss before income taxes	6.8		32.5
Equity in (loss) income of subsidiaries	0		0
Income tax benefit (expense)	(0.9)		(2.5)
Net loss	5.9		30.0
Other comprehensive (loss) income	(119.6)		0.4
Comprehensive (loss) income	(113.7)		30.4
Eliminating Entries
Condensed Financial Statements
Revenue	(93.6)		(57.0)
Cost of services, cost of product sales and cost of instant games (1)	(93.6)	[1]	(57.0)	[1]
Selling, general and administrative	0		0
Research and development	0		0
Employee termination and restructuring	0		0
Depreciation and amortization	0		0
Operating income (loss)	0		0
Interest income (expense)	0		0
Other (expense) income, net	0		0.1
Net loss before income taxes	0		0.1
Equity in (loss) income of subsidiaries	138.0		(10.9)
Income tax benefit (expense)	0		0
Net loss	138.0		(10.8)
Other comprehensive (loss) income	115.8		(8.0)
Comprehensive (loss) income	$ 253.8		$ (18.8)

[1] Exclusive of depreciation and amortization.