XML 67 R50.htm IDEA: XBRL DOCUMENT v3.20.4
Research and Development (Tables)
12 Months Ended
Dec. 31, 2020
Research and Development [Abstract]  
Research and Development Arrangement
Year Ended December 31,
Expenditures as a percentage of sales202020192018
Research and Development Expense1.2 %1.1 %1.0 %
Engineering Expense1.0 %1.3 %1.3 %
Total2.2 %2.4 %2.3 %