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Transition Charges Transition Charges (Tables) | 12 Months Ended
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Dec. 31, 2014
Restructuring and Related Activities [Abstract] |
Special Charges Summary [Table Text Block] | A summary of special charges and changes in the related balance sheet accounts, follows (in millions):
| Predecessor |  |  | Successor
| Liability Balance to Be Paid, Dec. 31, 2012 |  | 2013 |  | Liability Balance to Be Paid, Dec. 31, 2013 |  | Nine Months Ending Sep. 30, 2014 |  |  | Liability Balance to Be Paid, Sep. 30, 2014
|  | Special Charges |  | 2013 Paid |  |  | Special Charges |  | Paid |  |
Workforce reductions, primarily severance payments | $ | — |  |  | $ | 25.2 |  |  | $ | (4.0 | ) |  | $ | 21.2 |  |  | $ | 4.5 |  |  | $ | (13.6 | ) |  |  | $ | 12.1 |
Less: Amounts billed to DOE | * |  |  | (1.2 | ) |  | * |  |  | * |  |  | (2.4 | ) |  | * |  |  |  | * |
Pension and postretirement benefit charges, non-cash | * |  |  | 22.2 |  |  | * |  |  | * |  |  | — |  |  | * |  |  |  | * |
Advisory costs | 0.1 |  |  | 11.0 |  |  | (9.9 | ) |  | 1.2 |  |  | — |  |  | (1.2 | ) |  |  | — |
| $ | 0.1 |  |  | $ | 57.2 |  |  | $ | (13.9 | ) |  | $ | 22.4 |  |  | $ | 2.1 |  |  | $ | (14.8 | ) |  |  | $ | 12.1 |
| Successor
| Liability Balance to Be Paid, Sep. 30, 2014 |  | Three Months Ending Dec. 31, 2014 |  | Liability Balance to Be Paid, Dec. 31, 2014
|  | Special Charges |  | Paid |
Workforce reductions, primarily severance payments | $ | 12.1 |  |  | $ | 3.7 |  |  | $ | (13.4 | ) |  | $ | 2.4 |
Less: Amounts billed to DOE | * |  |  | (1.6 | ) |  | * |  |  | * |
| $ | 12.1 |  |  | $ | 2.1 |  |  | $ | (13.4 | ) |  | $ | 2.4 |
* - not applicable

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- Definition Tabular disclosure of costs incurred for restructuring including, but not limited to, exit and disposal activities, remediation, implementation, integration, asset impairment, and charges against earnings from the write-down of assets. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 5.P.3) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140864-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB TOPIC 5.P.4) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 + Details
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