Restructuring Costs - By Business Segment (Details) - USD ($)
$ in Millions
 3 Months Ended 6 Months Ended 12 Months Ended
Jun. 30, 2020
Jun. 30, 2019
Jun. 30, 2020
Jun. 30, 2019
Dec. 31, 2019
Dec. 31, 2018
Dec. 31, 2017
Restructuring Cost and Reserve [Line Items]              
Expense $ 2.4 $ 4.6 $ 1.3 $ 5.4 $ 20.7 $ 46.2 $ 41.6
Americas              
Restructuring Cost and Reserve [Line Items]              
Expense         5.3 13.7 11.7
Asia Pacific              
Restructuring Cost and Reserve [Line Items]              
Expense         $ 3.9 $ 8.3 $ 13.6
Operating Segments | Americas              
Restructuring Cost and Reserve [Line Items]              
Expense 0.7 0.4 1.0 0.8      
Operating Segments | Asia Pacific              
Restructuring Cost and Reserve [Line Items]              
Expense 0.0 0.0 0.2 0.1      
Operating Segments | Europe, Middle East, & Africa              
Restructuring Cost and Reserve [Line Items]              
Expense 1.6 4.2 0.8 4.5      
Corporate              
Restructuring Cost and Reserve [Line Items]              
Expense $ 0.1 $ 0.0 $ (0.7) $ 0.0