Description of the Business and Summary of Significant Accounting Policies - Minimum Guarantees (Details) - Payment guarantee - USD ($) $ in Millions	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Guarantor Obligations [Line Items]
Amortization related to licenses	$ 61.3	$ 68.5	$ 68.5
Accrued liabilities	50.1	47.4
Other long-term liabilities	212.4	117.6
Total minimum guarantee obligations	$ 262.5	$ 165.0
Weighted average remaining term (in years)	4 years 2 months 18 days	3 years
Expected future payments, 2019	$ 50.1	$ 47.4
Expected future payments, 2020	45.7
Expected future payments, 2021	41.2
Expected future payments, 2022	42.2
Expected future payments, 2023	27.5
Expected future payments, After 2023	$ 55.8

License Agreements, Guaranteed Obligations, Term

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
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