Acquisitions (Details Textual) (USD $)	3 Months Ended	9 Months Ended
	Nov. 02, 2012	Nov. 02, 2012	Feb. 03, 2012
Business Acquisition
Business Acquisition, Effective Date of Acquisition	Sep. 27, 2012
Business Acquisition, Purchase Price Allocation, Goodwill Amount	$ 3,374,000,000	$ 3,374,000,000
Total intangible assets	2,123,000,000	2,123,000,000
Noncontrolling interest	21,000,000	21,000,000	0
Business Combination, Separately Recognized Transactions, Additional Disclosures, Acquisition Costs	264,000,000	264,000,000
Business Combination, Pro Forma Information, Revenue of Acquiree since Acquisition Date, Actual	227,000,000	352,000,000
Business Combination, Pro Forma Information, Reduction of Net Income since Acquisition Date, Actual	67,000,000	98,000,000
Transaction Fees		85,000,000
Quest Acquisition
Business Acquisition
Business Acquisition, Cost of Acquired Entity, Cash Paid	2,500,000,000	2,500,000,000
Business Acquisition, Purchase Price Allocation, Goodwill Amount	1,700,000,000	1,700,000,000
Total intangible assets	1,100,000,000	1,100,000,000
Acquisitions, excluding Quest Software
Business Acquisition
Business Acquisition, Cost of Acquired Entity, Cash Paid	$ 2,400,000,000	$ 2,400,000,000