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