Business Segments (Schedule of Segment Reporting Information, by Segment) (Details) - USD ($) $ in Millions		3 Months Ended		9 Months Ended
		Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Revenue:
Product sales		$ 340.5	$ 182.8	$ 1,008.8	$ 538.9
Instant games		193.5	102.0	611.0	289.3
Services		137.6	130.8	402.0	392.4
Total revenue		671.6	415.6	2,021.8	1,220.6
Cost of services		85.5	69.6	274.6	200.7
Cost of product sales		87.4	59.9	293.2	161.2
Cost of instant games		77.1	69.7	212.9	212.5
Selling, general and administrative		136.8	95.6	423.6	282.6
Research and development		45.9	26.3	140.8	77.0
Employee termination and restructuring		5.6	1.9	19.0	12.4
Depreciation and amortization		286.5	100.4	692.9	290.5
Goodwill impairment		535.0	0.0	535.0	0.0
Operating loss		(588.2)	(7.8)	(570.2)	(16.3)
Earnings (loss) from equity investments		3.0	(14.0)	9.4	(7.8)
Operating Segments
Revenue:
Product sales		340.5	182.8	1,008.8	538.9
Instant games		193.5	102.0	611.0	289.3
Services		137.6	130.8	402.0	392.4
Total revenue		671.6	415.6	2,021.8	1,220.6
Cost of services	[1]	85.5	69.6	274.6	200.7
Cost of product sales	[1]	87.4	59.9	293.2	161.2
Cost of instant games	[1]	77.1	69.7	212.9	212.5
Selling, general and administrative		102.6	60.2	311.8	188.9
Research and development		45.9	26.3	140.8	77.0
Employee termination and restructuring		3.7	1.9	11.8	10.5
Depreciation and amortization		272.1	94.7	648.7	271.0
Goodwill impairment		535.0		535.0
Operating loss		(537.7)	33.3	(407.0)	98.8
Unallocated corporate costs
Revenue:
Unallocated corporate costs		(50.5)	(41.1)	(163.2)	(115.1)
Gaming | Operating Segments
Revenue:
Product sales		244.3	96.1	722.6	288.1
Instant games		184.8	68.3	582.0	216.6
Services		0.0	0.0	0.0	0.0
Total revenue		429.1	164.4	1,304.6	504.7
Cost of services		41.3	24.9	139.9	73.4
Cost of product sales		80.1	32.9	268.8	103.9
Cost of instant games		0.0	0.0	0.0	0.0
Selling, general and administrative		70.3	28.7	215.7	92.8
Research and development		39.4	21.5	120.3	64.9
Employee termination and restructuring		3.2	0.9	10.1	4.2
Depreciation and amortization		245.1	66.4	569.9	190.9
Goodwill impairment		535.0		535.0
Operating loss		(585.3)	(10.9)	(555.1)	(25.4)
Earnings (loss) from equity investments		1.0	1.3	2.7	3.3
Lottery
Revenue:
Goodwill impairment				0.0
Lottery | Operating Segments
Revenue:
Product sales		45.0	48.2	136.5	149.3
Instant games		8.7	33.7	29.0	72.7
Services		137.6	130.8	402.0	392.4
Total revenue		191.3	212.7	567.5	614.4
Cost of services		27.2	30.4	83.1	90.4
Cost of product sales		7.3	27.0	24.4	57.3
Cost of instant games		77.1	69.7	212.9	212.5
Selling, general and administrative		15.7	17.8	49.2	56.0
Research and development		1.1	1.4	4.2	2.7
Employee termination and restructuring		0.0	0.4	0.2	1.6
Depreciation and amortization		21.6	24.9	62.9	70.8
Goodwill impairment		0.0		0.0
Operating loss		41.3	41.1	130.6	123.1
Earnings (loss) from equity investments		2.0	(15.3)	6.7	(11.1)
Interactive | Operating Segments
Revenue:
Product sales		51.2	38.5	149.7	101.5
Instant games		0.0	0.0	0.0	0.0
Services		0.0	0.0	0.0	0.0
Total revenue		51.2	38.5	149.7	101.5
Cost of services		17.0	14.3	51.6	36.9
Cost of product sales		0.0	0.0	0.0	0.0
Cost of instant games		0.0	0.0	0.0	0.0
Selling, general and administrative		16.6	13.7	46.9	40.1
Research and development		5.4	3.4	16.3	9.4
Employee termination and restructuring		0.5	0.6	1.5	4.7
Depreciation and amortization		5.4	3.4	15.9	9.3
Goodwill impairment		0.0		0.0
Operating loss		6.3	3.1	17.5	1.1
Earnings (loss) from equity investments		$ 0.0	$ 0.0	$ 0.0	$ 0.0

[1] Exclusive of depreciation and amortization.