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Pension, Postretirement and Postemployment Benefits (Details 3) (Pension Benefits)
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12 Months Ended | |
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Dec. 31, 2013
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Dec. 31, 2012
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Cash
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| Weighted-average asset allocations of Pool Pension Plan | ||
| Weighted-average asset allocations | 3.00% | 3.00% |
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Available-for-sale equity securities
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| Weighted-average asset allocations of Pool Pension Plan | ||
| Weighted-average asset allocations | 56.00% | 55.00% |
| Securities investment target allocation percentage | 55.00% | |
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Available-for-sale debt securities
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| Weighted-average asset allocations of Pool Pension Plan | ||
| Weighted-average asset allocations | 41.00% | 42.00% |
| Securities investment target allocation percentage | 45.00% | |
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Total investments
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| Weighted-average asset allocations of Pool Pension Plan | ||
| Weighted-average asset allocations | 100.00% | 100.00% |