Quarterly report pursuant to Section 13 or 15(d)

Income Taxes (Details)

v3.10.0.1
Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Dec. 31, 2017
Income Tax Disclosure [Abstract]          
Provision (benefit) for income taxes, as a percentage of income before income taxes 57.60% 0.00% 68.80% 38.20%  
Liability related to unrecognized tax benefits $ 2.2   $ 2.2   $ 4.6