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Discontinued Operations - Narrative (Details) $ in Millions | 1 Months Ended | 3 Months Ended
--- | --- | ---
Apr. 30, 2015 warehouse | Mar. 31, 2015 USD ($) | Sep. 30, 2014 USD ($) | Jun. 30, 2014 USD ($)
Discontinued Operations and Disposal Groups [Abstract] |  |  |  |
Non-cash impairment charges, pre-tax |  | $ 241 |  |
Non-cash impairment charges after-tax |  | $ 235 |  |
Number of warehouses | warehouse | 1 |  |  |
Non-cash charge in cost of sales relating to depreciation and amortization expense, pre-tax |  |  |  | $ 34
Loss within the discontinued operations of condensed consolidated statements of operations, pre-tax |  |  | $ 6 |
Loss within the discontinued operations of condensed consolidated statements of operations, after-tax |  |  | $ 6 |

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