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Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Acquisitions and Dispositions - 2013 Acquisitions Narrative (Details) (USD $) In Millions, unless otherwise specified	0 Months Ended	12 Months Ended
	Oct. 18, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Business Acquisition [Line Items]
Goodwill		$ 4,108.3us-gaap_Goodwill	$ 1,183.1us-gaap_Goodwill	$ 801.4us-gaap_Goodwill
Unaudited pro forma net loss from continuing operations		(429.7)	(409.4)
Gaming
Business Acquisition [Line Items]
Goodwill		3,499.7	612.7	262.7
WMS Acquisition
Business Acquisition [Line Items]
Consideration transferred	1,485.9
Goodwill impairment loss		3.8
Goodwill	381.8
Unaudited pro forma net loss from continuing operations			(60.3)	(94.3)
WMS Acquisition \| Depreciation and amortization
Business Acquisition [Line Items]
Unaudited pro forma net loss from continuing operations			(22.2)	(60.9)
WMS Acquisition \| Cost of sales
Business Acquisition [Line Items]
Unaudited pro forma net loss from continuing operations			(13.0)
WMS Acquisition \| Acquisition-related costs
Business Acquisition [Line Items]
Unaudited pro forma net loss from continuing operations			74.0	2.5
WMS Acquisition \| Interest expense
Business Acquisition [Line Items]
Unaudited pro forma net loss from continuing operations			(61.0)	(83.0)
WMS Acquisition \| Income tax expense
Business Acquisition [Line Items]
Unaudited pro forma net loss from continuing operations			12.5	33.3
WMS Acquisition \| Gaming
Business Acquisition [Line Items]
Goodwill	$ 381.8