Benefit Plans Benefit Plans (Weighted Average Assumptions) (Details)		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015
U.S. Defined Benefit Plans
Benefit Obligation:
Discount rate		4.28%	4.44%
Rate of compensation increase		3.34%	3.34%
Periodic Benefit Cost:
Discount rate		4.44%	4.04%
Expected long-term rate of return on plan assets		6.67%	6.67%
Rate of compensation increase		3.34%	3.94%
Foreign Defined Benefit Plans
Benefit Obligation:
Discount rate	[1]	10.08%	11.35%
Rate of compensation increase		6.41%	6.31%
Periodic Benefit Cost:
Discount rate		11.37%	10.47%
Expected long-term rate of return on plan assets		9.54%	9.77%
Rate of compensation increase		6.40%	6.33%

[1] Includes an inflation factor that is used to calculate future periodic benefit cost, but is not used to calculate the benefit obligation.