Acquisitions and Dispositions (Details) - USD ($) $ in Millions		1 Months Ended	3 Months Ended
	Nov. 21, 2014	Jan. 31, 2014	Sep. 30, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Business Acquisition [Line Items]
Goodwill				$ 2,888.4	$ 3,013.7	$ 4,108.3
Sportech
Business Acquisition [Line Items]
Cash proceeds from sale of equity interest		$ 44.9
Gain on sale of equity interest		$ 14.5
Bally Acquisition
Business Acquisition [Line Items]
Consideration transferred	$ 5,100.0
Indebtedness	1,900.0
Goodwill	$ 2,956.1
DEQ Systems Corp.
Business Acquisition [Line Items]
Consideration transferred			$ 21.0