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Schedule II - Valuation and Qualifying Accounts (Tables) | 12 Months Ended
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Dec. 31, 2015
Valuation And Qualifying Accounts [Abstract] |
Summary of Valuation Allowance [Table Text Block] |
|  | Beginning |  |  |  |  |  |  | Net Deductions |  |  | Ending |
(in millions) |  | Balance |  |  | Additions |  |  | and Other |  |  | Balance |
Year ended December 31, 2015 (Successor) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserve for doubtful accounts |  | $ | 11 |  |  |  | 4 |  |  |  | 5 |  |  | $ | 10 |
Deferred tax valuation allowance |  | $ | 1,127 |  |  |  | 182 |  |  |  | 108 |  |  | $ | 1,201 |
Year ended December 31, 2014 (Successor) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserve for doubtful accounts |  | $ | 6 |  |  |  | 5 |  |  |  | — |  |  | $ | 11 |
Deferred tax valuation allowance |  | $ | 953 |  |  |  | 257 |  |  |  | 83 |  |  | $ | 1,127 |
Four Months ended December 31, 2013 (Successor) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserve for doubtful accounts |  | $ | — |  |  |  | 6 |  |  |  | — |  |  | $ | 6 |
Deferred tax valuation allowance |  | $ | 1,273 |  |  |  | 157 |  |  |  | 477 |  |  | $ | 953 |
In connection with the application of fresh start accounting on September 1, 2013, the carrying value of trade receivables was adjusted to fair value, eliminating the reserve for doubtful accounts. |
Eight Months ended August 31, 2013 (Predecessor) |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Reserve for doubtful accounts |  | $ | 30 |  |  |  | — |  |  |  | 8 |  |  | $ | 22 |
Deferred tax valuation allowance |  | $ | 2,838 |  |  |  | 180 |  |  |  | 1,745 |  |  | $ | 1,273 |

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- Definition Tabular disclosure of valuation allowances to reduce deferred tax assets to net realizable value, including identification of the deferred tax asset more likely than not will not be fully realized and the corresponding amount of the valuation allowance. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Valuation Allowance -URI http://asc.fasb.org/extlink&oid=6528051 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 740 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6907707&loc=d3e32537-109319 + Details
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- References No definition available. + Details
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