Pension Plans and Other Postretirement Employee Benefits (Narrative) (Details) (Non-Qualified Supplemental Pension Plans [Member], USD $)
In Millions, unless otherwise specified |
9 Months Ended |
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Sep. 30, 2013
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Non-Qualified Supplemental Pension Plans [Member]
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Defined Benefit Plan Disclosure [Line Items] | |
Contributions | $ 1.3 |