Business Segments (Schedule of Segment Reporting Information, by Segment) (Details) - USD ($) $ in Millions		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Revenue:
Product sales		$ 337.9	$ 179.3	$ 668.3	$ 356.1
Instant games		218.1	102.2	417.5	187.3
Services		135.5	135.4	264.4	261.6
Total revenue		691.5	416.9	1,350.2	805.0
Cost of services		98.6	64.6	189.1	131.1
Cost of product sales		107.9	54.9	205.8	101.3
Cost of instant games		68.8	72.9	135.8	142.8
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)
Earnings from equity investments		3.3	0.7	6.4	6.2
Operating Segments
Revenue:
Product sales		337.9	179.3	668.3	356.1
Instant games		218.1	102.2	417.5	187.3
Services		135.5	135.4	264.4	261.6
Total revenue		691.5	416.9	1,350.2	805.0
Cost of services	[1]	98.6	64.6	189.1	131.1
Cost of product sales	[1]	107.9	54.9	205.8	101.3
Cost of instant games	[1]	68.8	72.9	135.8	142.8
Selling, general and administrative		102.8	64.2	209.2	128.7
Research and development		48.0	24.8	94.9	50.7
Employee termination and restructuring		3.0	3.0	8.1	8.6
Depreciation and amortization		206.9	90.1	376.6	176.3
Operating income (loss)		55.5	42.4	130.7	65.5
Unallocated corporate costs
Revenue:
Unallocated corporate costs		55.6	38.8	112.7	74.0
Gaming | Operating Segments
Revenue:
Product sales		240.4	96.1	478.3	192.0
Instant games		209.3	80.8	397.2	148.3
Services		0.0	0.0	0.0	0.0
Total revenue		449.7	176.9	875.5	340.3
Cost of services		53.1	23.3	98.6	48.5
Cost of product sales		100.9	38.3	188.7	71.0
Cost of instant games		0.0	0.0	0.0	0.0
Selling, general and administrative		71.2	32.4	145.4	64.1
Research and development		41.1	21.1	80.9	43.4
Employee termination and restructuring		2.7	1.5	6.9	3.3
Depreciation and amortization		181.5	63.9	324.8	124.5
Operating income (loss)		(0.8)	(3.6)	30.2	(14.5)
Earnings from equity investments		1.8	2.3	1.7	2.0
Lottery | Operating Segments
Revenue:
Product sales		45.9	51.0	91.5	101.1
Instant games		8.8	21.4	20.3	39.0
Services		135.5	135.4	264.4	261.6
Total revenue		190.2	207.8	376.2	401.7
Cost of services		27.5	29.6	55.9	60.0
Cost of product sales		7.0	16.6	17.1	30.3
Cost of instant games		68.8	72.9	135.8	142.8
Selling, general and administrative		16.4	19.6	33.5	38.2
Research and development		1.5	0.7	3.1	1.3
Employee termination and restructuring		0.0	0.8	0.2	1.2
Depreciation and amortization		20.0	23.4	41.3	45.9
Operating income (loss)		49.0	44.2	89.3	82.0
Earnings from equity investments		1.5	(1.6)	4.7	4.2
Interactive | Operating Segments
Revenue:
Product sales		51.6	32.2	98.5	63.0
Instant games		0.0	0.0	0.0	0.0
Services		0.0	0.0	0.0	0.0
Total revenue		51.6	32.2	98.5	63.0
Cost of services		18.0	11.7	34.6	22.6
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		15.2	12.2	30.3	26.4
Research and development		5.4	3.0	10.9	6.0
Employee termination and restructuring		0.3	0.7	1.0	4.1
Depreciation and amortization		5.4	2.8	10.5	5.9
Operating income (loss)		7.3	1.8	11.2	(2.0)
Earnings from equity investments		$ 0.0	$ 0.0	$ 0.0	$ 0.0

[1] Exclusive of depreciation and amortization.