Income Taxes - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Income Tax Contingency [Line Items]
Tax benefit related to revaluation of its net deferred tax liabilities, Tax Cuts and Jobs Act of 2017		$ 3.7
Effective income tax rate		35.00%	35.00%	35.00%
Minimum | Scenario, Forecast
Income Tax Contingency [Line Items]
Effective income tax rate	27.00%
Maximum | Scenario, Forecast
Income Tax Contingency [Line Items]
Effective income tax rate	29.00%