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Weighted Average Assumptions Used to Determine Benefit Obligation (Details) | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
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Pension Benefit Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate | 5.20% | 4.15% | 4.90%
Other Postretirement Employee Benefit Plans |  |  |
Defined Benefit Plan Disclosure [Line Items] |  |  |
Discount rate | 5.05% | 4.05% | 4.95%

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- Definition The interest rate used to adjust for the time value of money for the plan. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(1) -URI http://asc.fasb.org/extlink&oid=28361610&loc=d3e1928-114920 + Details
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- Details
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