Retirement Plans (Major Actuarial Assumptions Used In Determining Benefit Obligations And Net Periodic Pension Cost For Defined Benefit Plans) (Details)		12 Months Ended
		Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Domestic Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial assumptions used to determine benefit obligations, Discount rate		3.60%	4.10%	4.40%
Actuarial assumptions used to determine benefit obligations, Rate of compensation increase		3.75%	3.75%	3.75%
Discount rate	[1]	4.03%	4.05%	4.10%
Actuarial assumptions used to determine net periodic pension cost, Expected long-term rate of return on plan assets		7.50%	7.75%	7.75%
Actuarial assumptions used to determine net periodic pension cost, Rate of compensation increase		3.75%	3.75%	3.75%
Foreign Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Actuarial assumptions used to determine benefit obligations, Discount rate		3.59%	3.88%	4.64%
Actuarial assumptions used to determine benefit obligations, Rate of compensation increase		4.06%	4.20%	4.12%
Discount rate	[1]	3.88%	4.72%	4.72%
Actuarial assumptions used to determine net periodic pension cost, Expected long-term rate of return on plan assets		6.73%	6.55%	6.64%
Actuarial assumptions used to determine net periodic pension cost, Rate of compensation increase		4.20%	4.03%	4.03%

[1] Represents the weighted average rate for the U.S. qualified plans in 2017 and 2016 due to the remeasurements