Restructuring and Acquisition-Related Charges - Additional information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended				36 Months Ended	12 Months Ended							12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2014 2013	Dec. 31, 2015 2014 and beyond	Dec. 31, 2011 Restructuring 2011 programs Position	Dec. 31, 2013 Restructuring 2013 Programs	Dec. 31, 2012 Restructuring 2012 Programs Position	Dec. 31, 2013 Restructuring other programs	Dec. 31, 2012 Restructuring other programs	Dec. 31, 2013 VMware	Sep. 30, 2013 VMware	Dec. 31, 2013 VMware Restructuring 2013 Programs
Restructuring Cost and Reserve [Line Items]
Assets Held-for-sale, Current												$ 12
Restructuring and acquisition-related charges	224	110	97
Restructuring charges	139	101	86			63	137	109	2	(8)	54		54
Acquisition-related charges	8	9	11								5
Asset Impairment Charges											18
Number of positions eliminated						787	1,917	1,163					710
Lease termination costs for facilities	18	21	26
Remaining cash portion owed for restructuring programs				9	5
Liabilities of Disposal Group, Including Discontinued Operation, Current											$ 44