Income Taxes - Schedule of Classification of Deferred Tax Assets and Deferred Tax Liabilities in Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Dec. 31, 2018	Dec. 31, 2017
Deferred tax assets and deferred tax liabilities as presented in consolidated balance sheets
Long-term deferred tax assets, net	$ 32.1	$ 14.3
Long-term deferred tax liability, net	(144.7)	(128.7)
Net deferred tax (liabilities) assets	$ (112.6)	$ (114.4)