Business Segments - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016
Segment Reporting Information [Line Items]
Revenue	$ 811.8				$ 725.4
Depreciation, amortization and impairments	188.1				165.1
Restructuring and other	52.2				9.2
Operating income (loss)	49.4				88.0
Interest expense	(154.8)				(159.4)
Earnings from equity investments	7.3				9.5
Loss on debt financing transactions	(93.2)				(29.7)
Loss on remeasurement of debt	(1.1)				0.0
Other expense, net	(3.2)				7.5
Net (loss) income before equity in (loss) income of subsidiaries and income taxes	(195.6)				(84.1)
Assets	7,737.2	$ 7,725.3
Corporate
Segment Reporting Information [Line Items]
Revenue	0.0				0.0
Depreciation, amortization and impairments	11.9				23.9
Restructuring and other	26.2				3.9
Operating income (loss)	(79.1)				(62.8)
Assets	190.7	972.8
Gaming | Operating Segments
Segment Reporting Information [Line Items]
Revenue	443.0				440.0
Depreciation, amortization and impairments	139.4				123.3
Restructuring and other	1.4				4.2
Operating income (loss)	72.1				77.5
Assets	5,321.3	5,401.6
Lottery | Operating Segments
Segment Reporting Information [Line Items]
Revenue	201.7				189.1
Depreciation, amortization and impairments	14.2				13.9
Restructuring and other	0.8				0.3
Operating income (loss)	61.1				56.1
Assets	1,104.3	1,070.6
Social
Segment Reporting Information [Line Items]
Revenue		95.5	$ 95.1	$ 91.1	80.2	$ 74.8	$ 70.3	$ 69.1	$ 60.2
Operating income (loss)		14.4	12.2	17.5	13.5	11.9	8.1	13.4	11.0
Social | Operating Segments
Segment Reporting Information [Line Items]
Revenue	97.4				80.2
Depreciation, amortization and impairments	6.6				2.6
Restructuring and other	18.1				0.8
Operating income (loss)	(0.2)				13.5
Assets	202.6	219.1
Digital
Segment Reporting Information [Line Items]
Revenue		17.8	16.3	15.7	16.1	16.8	14.9	14.3	12.4
Operating income (loss)		1.1	$ 0.7	$ 1.3	3.7	$ 1.8	$ 1.5	$ 0.3	$ 0.5
Digital | Operating Segments
Segment Reporting Information [Line Items]
Revenue	69.7				16.1
Depreciation, amortization and impairments	16.0				1.4
Restructuring and other	5.7				0.0
Operating income (loss)	(4.5)				$ 3.7
Assets	$ 918.3	$ 61.2