Impairments and Assets Held For Sale - Impairment and Accelerated D&A (Details) - USD ($) $ in Millions	3 Months Ended			12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Property, Plant and Equipment [Line Items]
Asset impairment and accelerated depreciation and amortization				$ 0.0	$ 4.8	$ 169.7
Income tax benefit				$ (14.5)	125.0	299.9
Trade names
Property, Plant and Equipment [Line Items]
Intangible asset carrying value	$ 97.5					97.5
Finite-lived intangible asset useful life	15 years
Minimum
Property, Plant and Equipment [Line Items]
Finite-lived intangible asset useful life				2 years
Maximum
Property, Plant and Equipment [Line Items]
Finite-lived intangible asset useful life				16 years
Buildings
Property, Plant and Equipment [Line Items]
Asset impairment and accelerated depreciation and amortization				$ 0.0	4.8	11.5
Non-cash charge					4.8	6.6
Lottery and other assets
Property, Plant and Equipment [Line Items]
Asset impairment and accelerated depreciation and amortization				0.0	0.0	13.8
Accelerated depreciation expense	$ 11.9
Gaming equipment
Property, Plant and Equipment [Line Items]
Asset impairment and accelerated depreciation and amortization				0.0	0.0	15.8
Accelerated depreciation expense						15.8
Trade names
Property, Plant and Equipment [Line Items]
Asset impairment and accelerated depreciation and amortization				$ 0.0	$ 0.0	$ 128.6
Impairment of intangible assets		$ 103.6	$ 25.0
Income tax benefit		$ 38.8	$ 9.5
Discount rate		9.00%
Trade names | Minimum
Property, Plant and Equipment [Line Items]
Royalty rate		0.50%
Trade names | Maximum
Property, Plant and Equipment [Line Items]
Royalty rate		1.00%