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Note 25 - Fresh Start Accounting (Details) - Goodwill - USD ($) $ in Millions | Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013 | Sep. 03, 2013 | Sep. 01, 2013
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Goodwill [Line Items] |  |  |  |  |
Reorganization value of Successor assets | $ 2,138 | $ 2,556 |  |  |
Reorganization value of Successor assets in excess of fair value - Successor goodwill | $ 88 | $ 96 | $ 88 |  |
Successor [Member] |  |  |  |  |
Goodwill [Line Items] |  |  |  |  |
Reorganization value of Successor assets |  |  |  | $ 3,463 | $ 3,463
Less: Fair value of Successor assets (excluding goodwill) |  |  |  |  | 3,375
Reorganization value of Successor assets in excess of fair value - Successor goodwill |  |  |  | $ 88 | $ 88

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- Definition Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.18) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 12 -Article 7 + Details
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