Business Segments - Schedule of Segment Reporting Information, by Segment (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017	Dec. 31, 2017
Segment Reporting Information [Line Items]
Revenue	$ 821.0	$ 768.9	$ 2,477.5	$ 2,260.6
AEBITDA	325.7	299.0	986.2	900.4
Reconciling items to consolidated net loss before income taxes:
Depreciation, amortization and impairments	(166.3)	(173.1)	(527.1)	(513.2)
Restructuring and other	(338.7)	(7.8)	(424.4)	(18.1)
EBITDA from equity investments	(13.8)	(17.9)	(49.1)	(47.0)
Earnings from equity investments	4.3	7.5	16.2	20.1
Interest expense	(147.4)	(148.9)	(448.3)	(459.5)
Loss on debt financing transactions	0.0	(8.4)	(93.2)	(38.1)
(Loss) gain on remeasurement of debt	(4.0)	0.0	29.4	0.0
Other income (expense), net	(2.4)	(6.4)	(9.3)	(4.4)
Stock-based compensation	(9.4)	(7.5)	(33.8)	(20.5)
Net income (loss) before income taxes	(352.0)	(63.5)	(553.4)	(180.3)
Assets	7,528.9		7,528.9		$ 7,725.3
Unallocated and Reconciling Items
Segment Reporting Information [Line Items]
Revenue	0.0	0.0	0.0	0.0
AEBITDA	(38.0)	(34.6)	(106.6)	(98.3)
Reconciling items to consolidated net loss before income taxes:
Depreciation, amortization and impairments	(13.3)	(25.4)	(39.8)	(70.6)
Restructuring and other	(318.6)	(7.1)	(375.1)	(12.6)
Assets	203.6		203.6		972.8
Gaming
Segment Reporting Information [Line Items]
Revenue		454.6		1,351.8
Gaming | Operating Segments
Segment Reporting Information [Line Items]
Revenue	447.9	454.6	1,361.6	1,351.8
AEBITDA	232.5	221.2	686.3	657.8
Reconciling items to consolidated net loss before income taxes:
Depreciation, amortization and impairments	(119.3)	(129.8)	(379.7)	(389.1)
Restructuring and other	(3.8)	(0.3)	(6.7)	(4.8)
Assets	5,119.7		5,119.7		5,401.6
Lottery
Segment Reporting Information [Line Items]
Revenue		202.9		594.3
Lottery | Operating Segments
Segment Reporting Information [Line Items]
Revenue	206.8	202.9	615.6	594.3
AEBITDA	92.3	89.2	285.8	270.1
Reconciling items to consolidated net loss before income taxes:
Depreciation, amortization and impairments	(15.0)	(10.0)	(43.1)	(37.2)
Restructuring and other	(2.9)	0.1	(0.5)	0.9
Assets	1,165.7		1,165.7		1,070.6
Social | Operating Segments
Segment Reporting Information [Line Items]
Revenue	105.1	95.1	302.2	266.4
AEBITDA	27.0	20.1	78.4	59.9
Reconciling items to consolidated net loss before income taxes:
Depreciation, amortization and impairments	(2.5)	(5.7)	(15.6)	(11.4)
Restructuring and other	(9.0)	(0.6)	(27.6)	(1.6)
Assets	188.1		188.1		219.1
Digital
Segment Reporting Information [Line Items]
Revenue		16.3		48.1
Digital | Operating Segments
Segment Reporting Information [Line Items]
Revenue	61.2	16.3	198.1	48.1
AEBITDA	11.9	3.1	42.3	10.9
Reconciling items to consolidated net loss before income taxes:
Depreciation, amortization and impairments	(16.2)	(2.2)	(48.9)	(4.9)
Restructuring and other	(4.4)	$ 0.1	(14.5)	$ 0.0
Assets	$ 851.8		$ 851.8		$ 61.2