Goodwill and Intangible Assets (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	May 03, 2013
Goodwill Allocated To Company Business Segments
Balance at beginning of period	$ 9,304
Goodwill acquired during the period	0
Adjustments	(15)
Balance at end of period	9,289
End User Computing
Goodwill Allocated To Company Business Segments
Balance at beginning of period	1,499
Goodwill acquired during the period	0
Adjustments	(3)
Balance at end of period	1,496
Enterprise Solutions Group
Goodwill Allocated To Company Business Segments
Balance at beginning of period	2,244
Goodwill acquired during the period	0
Adjustments	(3)
Balance at end of period	2,241
Dell Software Group
Goodwill Allocated To Company Business Segments
Balance at beginning of period	890
Goodwill acquired during the period	0
Adjustments	(1)
Balance at end of period	889
Dell Services
Goodwill Allocated To Company Business Segments
Balance at beginning of period	4,671
Goodwill acquired during the period	0
Adjustments	(8)
Balance at end of period	$ 4,663