Employee Benefit Plans (Weighted-average Assumptions Used) (Details)	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Pension Benefits [Member]
Weighted-average assumptions used to determine benefit obligations as of December 31:
Discount rate	4.32%	3.66%
Rate of compensation increase	4.23%	4.23%
Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31:
Discount rate - service cost	3.48%	3.96%	4.30%
Discount rate - interest cost	3.22%	3.51%	3.76%
Expected long-term return on plan assets	6.50%	7.50%	7.50%
Rate of compensation increase	4.23%	4.23%	4.23%
Foreign Plan [Member]
Weighted-average assumptions used to determine benefit obligations as of December 31:
Discount rate	2.93%	2.58%
Rate of compensation increase	3.77%	3.63%
Weighted-average assumptions used to determine net periodic benefit cost for the years ended December 31:
Discount rate - service cost	1.32%	1.34%	2.04%
Discount rate - interest cost	2.67%	2.75%	3.45%
Expected long-term return on plan assets	4.19%	4.40%	4.87%
Rate of compensation increase	3.62%	3.78%	3.70%