Financial Information for Guarantor Subsidiaries and Non-Guarantor Subsidiaries - Supplemental Condensed Consolidating Statement of Operations and Comprehensive Loss (Income) (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
Condensed Financial Statements, Captions [Line Items]
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
Cost of instant ticket revenues, cost of services and cost of sales	314.9	290.8	278.9	280.0	299.5	274.3	276.2	256.3	1,164.6	1,106.3	1,104.1
Selling, general and administrative	167.7	158.8	145.9	140.7	137.0	152.8	144.9	142.3	613.1	577.0	567.7
Research and development	45.8	47.8	48.1	42.4	49.4	53.9	51.7	49.8	184.1	204.8	183.9
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)
(Loss) gain on debt financing transactions									(38.1)	25.2	0.0
Other income (expense), net									26.9	26.9	(4.7)
Net loss before income taxes									(227.8)	(478.7)	(1,694.2)
Equity in (loss) income of subsidiaries									0.0	0.0	0.0
Income tax (expense) benefit									(14.5)	125.0	299.9
Net (loss) income									(242.3)	(353.7)	(1,394.3)
Other comprehensive (loss) income									133.9	(111.4)	(127.8)
Comprehensive (loss) income									(108.4)	(465.1)	(1,522.1)
Reportable Legal Entities | Parent Company
Condensed Financial Statements, Captions [Line Items]
Revenue									0.0	0.0	0.0
Cost of instant ticket revenues, cost of services and cost of sales									0.0	0.0	0.0
Selling, general and administrative									127.1	121.0	62.0
Research and development									2.1	6.1	0.0
Depreciation, amortization and impairments									71.6	53.5	33.7
Goodwill impairments										0.0	0.0
Restructuring and other									29.7	32.6	6.1
Operating income (loss)									(230.5)	(213.2)	(101.8)
Interest expense									(4.6)	(21.0)	(21.0)
(Loss) gain on debt financing transactions									(1.1)	0.0
Other income (expense), net									87.7	64.0	(21.0)
Net loss before income taxes									(148.5)	(170.2)	(143.8)
Equity in (loss) income of subsidiaries									(45.4)	(180.1)	(1,288.3)
Income tax (expense) benefit									(48.4)	(3.4)	37.8
Net (loss) income									(242.3)	(353.7)	(1,394.3)
Other comprehensive (loss) income									133.9	(111.4)	(127.8)
Comprehensive (loss) income									(108.4)	(465.1)	(1,522.1)
Reportable Legal Entities | Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Revenue									1,683.9	1,583.5	1,540.5
Cost of instant ticket revenues, cost of services and cost of sales									511.0	480.9	522.7
Selling, general and administrative									244.4	213.8	244.0
Research and development									101.3	145.2	139.3
Depreciation, amortization and impairments									462.7	534.6	681.4
Goodwill impairments										0.0	802.9
Restructuring and other									7.3	11.7	11.2
Operating income (loss)									357.2	197.3	(861.0)
Interest expense									0.0	0.0	0.0
(Loss) gain on debt financing transactions									0.0	0.0
Other income (expense), net									(184.7)	(227.3)	(167.3)
Net loss before income taxes									172.5	(30.0)	(1,028.3)
Equity in (loss) income of subsidiaries									21.9	61.1	(137.2)
Income tax (expense) benefit									(85.6)	15.9	290.0
Net (loss) income									108.8	47.0	(875.5)
Other comprehensive (loss) income									65.8	(43.1)	(4.4)
Comprehensive (loss) income									174.6	3.9	(879.9)
Reportable Legal Entities | Non-Guarantor Subsidiaries
Condensed Financial Statements, Captions [Line Items]
Revenue									1,223.3	1,148.6	1,110.0
Cost of instant ticket revenues, cost of services and cost of sales									629.1	553.8	597.9
Selling, general and administrative									250.2	235.9	194.1
Research and development									74.2	42.8	39.1
Depreciation, amortization and impairments									128.0	116.0	147.7
Goodwill impairments										69.0	132.1
Restructuring and other									3.8	8.1	3.3
Operating income (loss)									138.0	123.0	(4.2)
Interest expense									(1.2)	(0.2)	(0.7)
(Loss) gain on debt financing transactions									0.0	0.0
Other income (expense), net									(26.5)	(4.2)	(21.3)
Net loss before income taxes									110.3	118.6	(26.2)
Equity in (loss) income of subsidiaries									0.0	0.0	0.0
Income tax (expense) benefit									(38.4)	(25.7)	(44.5)
Net (loss) income									71.9	92.9	(70.7)
Other comprehensive (loss) income									128.7	(135.1)	(131.0)
Comprehensive (loss) income									200.6	(42.2)	(201.7)
Reportable Legal Entities | SGI
Condensed Financial Statements, Captions [Line Items]
Revenue									498.1	469.5	446.9
Cost of instant ticket revenues, cost of services and cost of sales									341.9	328.6	322.1
Selling, general and administrative									41.3	46.9	67.6
Research and development									6.5	10.7	5.5
Depreciation, amortization and impairments									31.3	40.9	40.4
Goodwill impairments										0.0	67.6
Restructuring and other									5.1	4.6	1.3
Operating income (loss)									72.0	37.8	(57.6)
Interest expense									(603.9)	(640.2)	(643.2)
(Loss) gain on debt financing transactions									(37.0)	25.2
Other income (expense), net									150.4	194.4	204.9
Net loss before income taxes									(418.5)	(382.8)	(495.9)
Equity in (loss) income of subsidiaries									67.6	48.5	6.5
Income tax (expense) benefit									157.9	138.2	16.6
Net (loss) income									(193.0)	(196.1)	(472.8)
Other comprehensive (loss) income									10.3	(1.7)	(11.0)
Comprehensive (loss) income									(182.7)	(197.8)	(483.8)
Eliminating Entries
Condensed Financial Statements, Captions [Line Items]
Revenue									(321.7)	(318.2)	(338.6)
Cost of instant ticket revenues, cost of services and cost of sales									(317.4)	(257.0)	(338.6)
Selling, general and administrative									(49.9)	(40.6)	0.0
Research and development									0.0	0.0	0.0
Depreciation, amortization and impairments									(10.8)	(6.3)	0.0
Goodwill impairments										0.0	0.0
Restructuring and other									0.0	0.0	0.0
Operating income (loss)									56.4	(14.3)	0.0
Interest expense									0.0	0.0	0.0
(Loss) gain on debt financing transactions									0.0	0.0
Other income (expense), net									0.0	0.0	0.0
Net loss before income taxes									56.4	(14.3)	0.0
Equity in (loss) income of subsidiaries									(44.1)	70.5	1,419.0
Income tax (expense) benefit									0.0	0.0	0.0
Net (loss) income									12.3	56.2	1,419.0
Other comprehensive (loss) income									(204.8)	179.9	146.4
Comprehensive (loss) income									$ (192.5)	$ 236.1	$ 1,565.4