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Basis of Presentation - Textuals (Details) - USD ($) $ in Millions | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Apr. 03, 2017
Successor |  |  |
Fresh-Start Adjustment [Line Items] |  |  |
Reorganization items, net | $ 12.8 |  |
Predecessor |  |  |
Fresh-Start Adjustment [Line Items] |  |  |
Reorganization items, net |  | $ (41.4) |
Cash paid for “Reorganization items, net” |  | 31.4 |
Voting shares received upon reorganization (less than 50%) |  |  | 50.00%
Predecessor | Professional fee [Member] |  |  |
Fresh-Start Adjustment [Line Items] |  |  |
Reorganization items, net |  | (42.5) |
Predecessor | accounts payable settlement (gains) losses [Member] |  |  |
Fresh-Start Adjustment [Line Items] |  |  |
Reorganization items, net |  | (0.7) |
Predecessor | Interest Income [Member] |  |  |
Fresh-Start Adjustment [Line Items] |  |  |
Reorganization items, net |  | $ (0.4) |

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- Definition Total amount of reorganization items. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 55 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84165509&loc=d3e56145-112766 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 852 -SubTopic 10 -Section 45 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=64805424&loc=d3e55730-112764 + Details
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