Goodwill and Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	May 04, 2012
Goodwill Allocated To Company Business Segments
Balance at beginning of period	$ 5,838
Goodwill acquired during the period	159
Adjustments	8
Balance at end of period	6,005
Large Enterprise
Goodwill Allocated To Company Business Segments
Balance at beginning of period	2,222
Goodwill acquired during the period	57
Adjustments	3
Balance at end of period	2,282
Public
Goodwill Allocated To Company Business Segments
Balance at beginning of period	2,547
Goodwill acquired during the period	56
Adjustments	2
Balance at end of period	2,605
Small and Medium Business
Goodwill Allocated To Company Business Segments
Balance at beginning of period	759
Goodwill acquired during the period	46
Adjustments	3
Balance at end of period	808
Consumer
Goodwill Allocated To Company Business Segments
Balance at beginning of period	310
Goodwill acquired during the period	0
Adjustments	0
Balance at end of period	$ 310