Segment Reporting (Details 2) (USD $) In Millions, unless otherwise specified	May 02, 2015		Jan. 31, 2015		May 03, 2014
Segment Reporting Information
Total assets	$ 40,446		$ 41,404		$ 44,042
Segment assets
Segment Reporting Information
Total assets	39,785		39,569		37,680
Assets of discontinued operations
Segment Reporting Information
Total assets	606		1,775		6,323
Unallocated assets
Segment Reporting Information
Total assets	$ 55	[1]	$ 60	[1]	$ 39	[1]

[1] Represents the insurance receivable related to the Data Breach.