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Discontinued Operations - Narrative (Details) - USD ($) $ in Millions | 3 Months Ended
--- | ---
Mar. 31, 2015 | Sep. 30, 2014 | Jun. 30, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |
Non-cash impairment charges, pre-tax | $ 241 |  |
Non-cash impairment charges after-tax | $ 235 |  |
Non-cash charge in cost of sales relating to depreciation and amortization expense, pre-tax |  |  | $ 34
Loss within the discontinued operations, pre-tax |  | $ 6 |
Loss within the discontinued operations of condensed consolidated statements of operations, after-tax |  | $ 6 |

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