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Pension And Other Postretirement Benefits Pension and Other Postretirement Benefits - Assumpted Used Table (Details) (Pension Plan [Member])
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2 Months Ended | 5 Months Ended | 12 Months Ended |
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Feb. 28, 2013
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May 31, 2013
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Dec. 31, 2012
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Pension Plan [Member]
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| Defined Benefit Plans and Other Postretirement Benefit Plans Table Text Block [Line Items] | |||
| Discount Rate | 3.50% | 3.75% | 3.63% |
| Defined Benefit Plan, Expected Return on Plan Assets | 8.30% | 8.30% | 8.30% |