Pension and Other Post-Retirement Benefits (Details 7) (Foreign Pension Plans, Defined Benefit [Member])	12 Months Ended
	Dec. 31, 2014	Dec. 31, 2013
Weighted-average asset allocations of its foreign funded pension plan
Target asset allocation percentage	100.00%
Actual plan asset allocations	100.00%	100.00%
Equity Securities [Member]
Weighted-average asset allocations of its foreign funded pension plan
Target asset allocation percentage	36.80%
Actual plan asset allocations	37.70%	38.50%
Debt Securities [Member]
Weighted-average asset allocations of its foreign funded pension plan
Target asset allocation percentage	63.20%
Actual plan asset allocations	62.30%	61.50%