| Pension Benefits | ||||||||||||
| U.S. Plans | Non-U.S. Plans | |||||||||||
| 2013 | 2012 | 2011 | 2013 | 2012 | 2011 | |||||||
| Actuarial assumptions used to determine | ||||||||||||
| benefit obligations as of December 31: | ||||||||||||
| Discount rate | 4.89 | % | 4.06 | % | 4.89 | % | 4.29 | % | 4.29 | % | 4.84 | % |
| Expected annual rate of | ||||||||||||
| compensation increase | 4.50 | % | 4.50 | % | 4.50 | % | 2.81 | % | 3.55 | % | 3.67 | % |
| Actuarial assumptions used to determine | ||||||||||||
| net periodic benefit (income) cost for | ||||||||||||
| years ended December 31: | ||||||||||||
| Discount rate | 4.06 | % | 4.89 | % | 5.25 | % | 4.29 | % | 4.84 | % | 5.40 | % |
| Expected rate of return | ||||||||||||
| on plan assets | 7.75 | % | 8.00 | % | 8.00 | % | 6.99 | % | 7.03 | % | 7.06 | % |
| Expected annual rate of | ||||||||||||
| compensation increase | 4.50 | % | 4.50 | % | 4.50 | % | 3.55 | % | 3.67 | % | 3.79 | % |
| Other Postretirement Benefits | |||||||||||
| 2013 | 2012 | 2011 | |||||||||
| Actuarial assumptions used to determine benefit | |||||||||||
| obligations as of December 31: | |||||||||||
| Discount rate | 4.05 | % | 3.40 | % | 4.00 | % | |||||
| Actuarial assumptions used to determine net periodic | |||||||||||
| benefit cost for years ended December 31: | |||||||||||
| Discount rate | 3.40 | % | 4.00 | % | 4.70 | % | |||||