Business Segments - Reportable Segment (Details) - USD ($) $ in Millions	3 Months Ended								12 Months Ended
	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Mar. 31, 2017	Dec. 31, 2016	Sep. 30, 2016	Jun. 30, 2016	Mar. 31, 2016	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total revenue	$ 823.0	$ 768.9	$ 766.3	$ 725.4	$ 752.2	$ 720.0	$ 729.2	$ 682.0	$ 3,083.6	$ 2,883.4	$ 2,758.8
Depreciation, amortization and impairments	169.6	173.1	175.0	165.1	173.3	191.7	193.1	180.6	682.8	738.7	903.2
Goodwill impairments					69.0	0.0	0.0	0.0	0.0	69.0	1,002.6
Restructuring and other	27.8	7.8	1.1	9.2	36.3	13.8	4.2	2.7	45.9	57.0	21.9
Operating income (loss)	97.2	$ 90.6	$ 117.3	$ 88.0	(12.3)	$ 33.5	$ 59.1	$ 50.3	393.1	130.6	(1,024.6)
Interest expense									(609.7)	(661.4)	(664.9)
Earnings from equity investments									26.7	13.0	16.9
(Loss) gain on debt financing transactions									(38.1)	25.2	0.0
Other income (expense), net									0.2	13.9	(21.6)
Net loss before income taxes									(227.8)	(478.7)	(1,694.2)
Assets	7,725.3				7,087.4				7,725.3	7,087.4	7,732.2
Capital expenditures for year ended									293.7	272.9	323.6
Gaming
Segment Reporting Information [Line Items]
Total revenue									1,844.3	1,772.7	1,773.6
Goodwill impairments										0.0	935.0
Lottery
Segment Reporting Information [Line Items]
Total revenue									811.5	777.9	775.2
Goodwill impairments					69.0					69.0
Interactive
Segment Reporting Information [Line Items]
Total revenue									427.8	332.8	210.0
Goodwill impairments										0.0
Operating Segments | Gaming
Segment Reporting Information [Line Items]
Total revenue									1,844.3	1,772.7	1,773.6
Depreciation, amortization and impairments									520.8	585.2	728.6
Goodwill impairments										0.0	935.0
Restructuring and other									7.7	14.6	11.2
Operating income (loss)									346.2	212.0	(901.5)
Assets	5,401.6				5,506.6				5,401.6	5,506.6	6,135.2
Capital expenditures for year ended									194.1	184.4	234.8
Operating Segments | Lottery
Segment Reporting Information [Line Items]
Total revenue									811.5	777.9	775.2
Depreciation, amortization and impairments									50.1	66.5	95.9
Goodwill impairments										69.0	67.6
Restructuring and other									5.9	8.7	0.2
Operating income (loss)									246.8	122.9	67.2
Assets	1,070.6				1,032.0				1,070.6	1,032.0	1,116.6
Capital expenditures for year ended									37.9	40.5	43.9
Operating Segments | Interactive
Segment Reporting Information [Line Items]
Total revenue									427.8	332.8	210.0
Depreciation, amortization and impairments									26.3	14.9	19.6
Goodwill impairments										0.0	0.0
Restructuring and other									2.2	1.6	1.5
Operating income (loss)									64.4	48.5	27.1
Assets	280.3				205.8				280.3	205.8	211.9
Capital expenditures for year ended									8.4	8.9	6.7
Corporate
Segment Reporting Information [Line Items]
Total revenue									0.0	0.0	0.0
Depreciation, amortization and impairments									85.6	72.1	59.1
Goodwill impairments										0.0	0.0
Restructuring and other									30.1	32.1	9.0
Operating income (loss)									(264.3)	(252.8)	(217.4)
Assets	$ 972.8				$ 343.0				972.8	343.0	268.5
Capital expenditures for year ended									$ 53.3	$ 39.1	$ 38.2