XML 82 R70.htm IDEA: XBRL DOCUMENT v3.8.0.1
Provision for Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended
Mar. 31, 2018
Mar. 31, 2017
Dec. 31, 2017
Provision for Income Taxes      
Income tax expense (benefit) $ 8.4 $ 9.9  
Effective tax rates (as a percent) 23.50% 31.30%  
Unrecognized tax benefits, excluding penalties and interest $ 4.5   $ 4.4
Accrued interest and penalties related to uncertain tax positions 0.3   $ 0.2
Penalties and interest (benefit) expense relating to unrecognized tax benefits $ 0.0 $ 0.0  
Statutory tax rate (as a percent) 21.00%    
Germany and Switzerland      
Provision for Income Taxes      
Increase in effective tax rate from impact of foreign statutory rates (as a percent) 4.00%    
Germany | Foreign      
Provision for Income Taxes      
Foreign statutory tax rate for 2017 (as a percent) 30.00%    
Switzerland | Foreign      
Provision for Income Taxes      
Foreign statutory tax rate for 2017 (as a percent) 20.00%