Discontinued Operations Discontinued Operations (Details) (USD $) In Millions, unless otherwise specified	Jan. 31, 2015
Discontinued Operations and Disposal Groups [Abstract]
Cash and cash equivalents	$ 194
Merchandise inventories	264
Other current assets	226
Net property and equipment	130
Other assets	37
Total assets	851
Accounts payable	452
Other current liabilities	133
Long-Term Liabilities held for sale	18
Total liabilities	$ 603