| | | Pension Plans | | Postretirement Healthcare Plans |
| | | 2013 | | 2012 | | 2011 | | 2013 | | 2012 | | 2011 |
| | | | | | | | | | | | | | | | | | | |
| Discount rate used to determine benefit obligation | 3.66 | % | | 4.08 | % | | 4.79 | % | | 4.91 | % | | 4.55 | % | | 5.67 | % |
| Discount rate used to determine net periodic benefit cost | 4.08 | | | 4.79 | | | 4.76 | | | 4.55 | | | 5.67 | | | 6.11 | |
| Rate of increase in future compensation levels | | | | | | | | | | | | | | | | | |
| | used to determine benefit obligation | 3.30 | | | 3.00 | | | 4.02 | | | - | | | - | | | - | |
| Rate of increase in future compensation levels | | | | | | | | | | | | | | | | | |
| | used to determine net periodic benefit cost | 3.00 | | | 4.02 | | | 4.08 | | | - | | | - | | | - | |
| Expected long-term rate of return on assets | 6.41 | | | 6.52 | | | 6.45 | | | - | | | - | | | - | |
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