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 6 Months Ended
Jun. 30, 2018
Jun. 30, 2017
Jun. 30, 2018
Jun. 30, 2017
Dec. 31, 2017
Income Tax Disclosure [Abstract]          
Provision (benefit) for income taxes, as a percentage of income before income taxes 116.40% 190.50% 86.50% 61.90%  
Liability related to unrecognized tax benefits $ 4.8   $ 4.8   $ 4.6