Restructuring And Cost Reduction Programs (Summary of Charges Associated with Restructuring Programs by Major Type of Charges) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	$ 12,604
Restructuring charges	17,425	$ 10,955	$ 7,116
Cumulative restructuring charges incurred	94,738
Organizational Optimization Program [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	3,883
Restructuring charges	2,980
Cumulative restructuring charges incurred	2,980
American Manufacturing Optimization Program [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	8,721
Restructuring charges	1,040
Cumulative restructuring charges incurred	7,694
Global Optimization Program [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	13,405	10,955	7,116
Cumulative restructuring charges incurred		84,064
Employee Severance [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	12,527
Restructuring charges	9,690	7,163	3,560
Cumulative restructuring charges incurred	53,941
Employee Severance [Member] | Organizational Optimization Program [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	3,883
Restructuring charges	2,980
Cumulative restructuring charges incurred	2,980
Employee Severance [Member] | American Manufacturing Optimization Program [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	8,644
Restructuring charges	1,040
Cumulative restructuring charges incurred	7,617
Employee Severance [Member] | Global Optimization Program [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	5,670	7,163	3,560
Cumulative restructuring charges incurred		43,344
Other Costs [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	77
Restructuring charges	7,735	3,792	3,556
Cumulative restructuring charges incurred	40,797
Other Costs [Member] | American Manufacturing Optimization Program [Member]
Restructuring Cost And Reserve [Line Items]
Total expected restructuring charges	77
Cumulative restructuring charges incurred	77
Other Costs [Member] | Global Optimization Program [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 7,735	3,792	$ 3,556
Cumulative restructuring charges incurred		$ 40,720