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Weighted Average Assumptions - Net Periodic Benefit Cost (Details)
12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
United States, Pension Benefits [Member]
     
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Discount rate 4.00% 4.50% 5.25%
Expected long-term rate of return on plan assets 6.50% 7.00% 7.25%
Rate of compensation increase 0.00% 0.00% 0.00%
France, Pension Benefits [Member]
     
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Discount rate 2.38% 4.40% 4.10%
Expected long-term rate of return on plan assets 3.25% 3.25% 4.00%
Rate of compensation increase 2.50% 2.50% 2.50%
United States, OPEB [Member]
     
Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items]      
Discount rate 3.25% 4.50% 5.25%
Expected long-term rate of return on plan assets 0.00% 0.00% 0.00%
Rate of compensation increase 3.50% 3.50% 3.50%