Restructuring and Acquisition-Related Charges - Additional information (Detail) (USD $)	3 Months Ended		6 Months Ended		3 Months Ended	6 Months Ended		3 Months Ended		6 Months Ended	12 Months Ended	3 Months Ended	6 Months Ended	12 Months Ended	3 Months Ended		6 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2013 VMware	Jun. 30, 2014 VMware	Jun. 30, 2013 VMware	Jun. 30, 2014 Restructuring 2014 Programs Positions	Mar. 31, 2014 Restructuring 2014 Programs Positions	Jun. 30, 2013 Restructuring 2013 Programs Positions	Dec. 31, 2013 Restructuring 2013 Programs	Jun. 30, 2013 Restructuring 2013 Programs VMware	Jun. 30, 2013 Restructuring 2013 Programs VMware	Dec. 31, 2013 Restructuring 2013 Programs VMware Positions	Jun. 30, 2014 Consolidation of excess facilities and other contractual obligations	Jun. 30, 2013 Consolidation of excess facilities and other contractual obligations Restructuring 2013 Programs VMware	Jun. 30, 2013 Consolidation of excess facilities and other contractual obligations Restructuring 2013 Programs VMware	Jun. 30, 2013 Workforce reductions Restructuring 2013 Programs VMware	Jun. 30, 2013 Workforce reductions Restructuring 2013 Programs VMware
Restructuring Cost and Reserve [Line Items]
Restructuring and acquisition-related charges	$ 30,000,000	$ 7,000,000	$ 149,000,000	$ 155,000,000
Restructuring charges	29,000,000	4,000,000	144,000,000	85,000,000	2,000,000		56,000,000					2,000,000	56,000,000			0	0	2,000,000	56,000,000
Asset Impairment Charges					1,000,000		10,000,000
Acquisition-related charges	2,000,000			3,000,000		4,000,000	1,000,000
Restructuring Reserve, Accrual Adjustment						(1,000,000)
Restructuring and Related Cost, Number of Positions Eliminated								210	1,326	1,004	1,917			710
Lease termination costs for facilities	$ 4,000,000	$ 5,000,000	$ 8,000,000	$ 12,000,000
Date of completion of workforce reduction and/or consolidation of facilities															2015