Acquisitions and Dispositions - Acquisitions (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended		12 Months Ended		0 Months Ended		3 Months Ended		9 Months Ended			12 Months Ended				3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended	3 Months Ended	9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013	Dec. 31, 2013	Dec. 31, 2012	Aug. 01, 2014 Bally Technologies Inc.	Oct. 18, 2013 WMS Acquisition	Sep. 30, 2013 WMS Acquisition		Sep. 30, 2013 WMS Acquisition		Oct. 18, 2013 WMS Acquisition	Dec. 31, 2013 Gaming	Sep. 30, 2014 Gaming	Dec. 31, 2012 Gaming	Oct. 18, 2013 Gaming WMS Acquisition	Sep. 30, 2013 Depreciation and amortization WMS Acquisition	Sep. 30, 2013 Depreciation and amortization WMS Acquisition	Sep. 30, 2013 Acquisition-related fees and expenses WMS Acquisition	Sep. 30, 2013 Acquisition-related fees and expenses WMS Acquisition	Sep. 30, 2013 Interest expense WMS Acquisition	Sep. 30, 2013 Interest expense WMS Acquisition	Sep. 30, 2013 Income tax expense WMS Acquisition	Sep. 30, 2013 Income tax expense WMS Acquisition
Business Acquisition [Line Items]
Purchase price							$ 5,100.0	$ 1,485.9
Impairments					5.4				3.8					0
Goodwill	1,168.7		1,168.7		1,183.1	801.4							381.8	669.2	663.6	262.7	381.8
Current assets													503.9
Long-term notes receivable													76.2
Property, plant and equipment, net													465.8
Intangible assets													325.0
Intellectual property													201.2
Other long-term assets													7.8
Total assets													1,961.7
Current liabilities													(158.9)
Deferred income taxes													(166.6)
Long-term liabilities													(150.3)
Total liabilities													(475.8)
Total equity purchase price													1,485.9
Revenue from Consolidated Statements of Operations and Comprehensive (Loss) Income	415.6	234.4	1,220.6	689.0
Add: WMS revenue not reflected in Consolidated Statements of Operations and Comprehensive (Loss) Income									166.4		547.1
Unaudited pro forma revenue									400.8		1,236.1
Net loss from continuing operations from Consolidated Statements of Operations and Comprehensive (Loss) Income	(69.8)	(0.4)	(187.2)	(25.1)
Add: WMS net loss from continuing operations not reflected in Consolidated Statements of Operations and Comprehensive (Loss) Income plus pro forma adjustments (1), (2), (3) and (4) below									(25.4)	[1],[2],[3],[4]	(45.0)	[1],[2],[3],[4]
Unaudited pro forma net loss from continuing operations									$ (25.8)		$ (70.1)							$ (8.4)	$ (28.9)	$ 3.5	$ 20.5	$ (20.4)	$ (61.0)	$ 0.5	$ 3.0

[1] An adjustment to reverse acquisition-related fees and expenses of $3.5 million and $20.5 million for the three and nine months ended September 30, 2013, respectively.

[2] An adjustment to reflect additional D&A of $8.4 million and $28.9 million for the three and nine months ended September 30, 2013, respectively, that would have been incurred assuming the fair value adjustments to intangible assets and property and equipment had been applied on January 1, 2012.

[3] An adjustment of $0.5 million and $3.0 million to reverse the U.S. tax benefit and expense of WMS for the three and nine months ended September 30, 2013, respectively, under the assumption that the U.S. taxable income of WMS would have been offset by U.S. tax attributes of the Company.

[4] An adjustment to reflect additional interest expense of $20.4 million and $61.0 million for the three and nine months ended September 30, 2013, respectively, that would have been incurred assuming our new credit facilities were in place as of January 1, 2012.