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Retirement Benefits Plans - Pension Plans Assumptions (Details 7)
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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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Dec. 31, 2011
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United States pension plans [Member]
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| Assumptions used to determine benefit obligation at year-end | |||
| Discount rate | 4.67% | 3.97% | 4.70% |
| Rate of compensation increase | 3.16% | 3.16% | 3.15% |
| Assumptions used to determine expense | |||
| Discount rate | 3.97% | 4.70% | 5.50% |
| Expected long-term return on plan assets | 8.45% | 8.50% | 8.50% |
| Rate of compensation increase | 3.16% | 3.15% | 3.61% |
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Non-United States pension plans [Member]
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| Assumptions used to determine benefit obligation at year-end | |||
| Discount rate | 4.20% | 4.17% | 5.12% |
| Rate of compensation increase | 3.12% | 3.09% | 3.62% |
| Assumptions used to determine expense | |||
| Discount rate | 4.17% | 5.12% | 5.40% |
| Expected long-term return on plan assets | 6.92% | 7.10% | 7.17% |
| Rate of compensation increase | 3.09% | 3.62% | 3.63% |