Business Segments (Schedule of Segment Reporting Information, by Segment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Revenue:
Product sales	$ 330.4		$ 176.8
Instant games	199.4		85.1
Services	128.9		126.2
Total revenue	658.7		388.1
Cost of services	90.5		66.5
Cost of product sales	97.9		46.4
Cost of instant games	67.0		69.9
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)
Earnings from equity investments	3.1		5.5
Operating Segments
Revenue:
Product sales	330.4		176.8
Instant games	199.4		85.1
Services	128.9		126.2
Total revenue	658.7		388.1
Cost of services	90.5	[1]	66.5	[1]
Cost of product sales	97.9	[1]	46.4	[1]
Cost of instant games	67.0	[1]	69.9	[1]
Selling, general and administrative	106.4		64.5
Research and development	46.9		25.9
Employee termination and restructuring	5.1		5.6
Depreciation and amortization	169.7		86.2
Operating income (loss)	75.2		23.1
Unallocated corporate costs
Revenue:
Unallocated corporate costs	57.1		35.2
Gaming | Operating Segments
Revenue:
Product sales	237.9		95.9
Instant games	187.9		67.5
Services	0		0
Total revenue	425.8		163.4
Cost of services	45.5		25.2
Cost of product sales	87.8		32.7
Cost of instant games	0		0
Selling, general and administrative	74.2		31.7
Research and development	39.8		22.3
Employee termination and restructuring	4.2		1.8
Depreciation and amortization	143.3		60.6
Operating income (loss)	31.0		(10.9)
Earnings from equity investments	(0.1)		(0.3)
Lottery | Operating Segments
Revenue:
Product sales	45.6		50.1
Instant games	11.5		17.6
Services	128.9		126.2
Total revenue	186.0		193.9
Cost of services	28.4		30.4
Cost of product sales	10.1		13.7
Cost of instant games	67.0		69.9
Selling, general and administrative	17.1		18.6
Research and development	1.6		0.6
Employee termination and restructuring	0.2		0.4
Depreciation and amortization	21.3		22.5
Operating income (loss)	40.3		37.8
Earnings from equity investments	3.2		5.8
Interactive | Operating Segments
Revenue:
Product sales	46.9		30.8
Instant games	0		0
Services	0		0
Total revenue	46.9		30.8
Cost of services	16.6		10.9
Cost of product sales	0		0
Cost of instant games	0		0
Selling, general and administrative	15.1		14.2
Research and development	5.5		3.0
Employee termination and restructuring	0.7		3.4
Depreciation and amortization	5.1		3.1
Operating income (loss)	3.9		(3.8)
Earnings from equity investments	$ 0		$ 0

[1] Exclusive of depreciation and amortization.