Accumulated Other Comprehensive Loss, Net of Tax (Detail) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended			6 Months Ended		6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended	12 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Dec. 31, 2013	Jun. 30, 2014 Accumulated Translation Adjustment	Dec. 31, 2013 Accumulated Translation Adjustment	Jun. 30, 2014 Accumulated Net Unrealized Investment Gain (Loss)	Dec. 31, 2013 Accumulated Net Unrealized Investment Gain (Loss)	Jun. 30, 2014 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	Dec. 31, 2013 Accumulated Net Gain (Loss) from Designated or Qualifying Cash Flow Hedges [Member]	Jun. 30, 2014 Accumulated Defined Benefit Plans Adjustment	Dec. 31, 2013 Accumulated Defined Benefit Plans Adjustment	Jun. 30, 2014 Non-controlling Interest in VMware	Dec. 31, 2013 Non-controlling Interest in VMware
Accumulated other comprehensive income (loss) [Line Items]
Other comprehensive income (loss) before reclassifications			$ 87			$ 4		$ 83		$ 1		$ 0		$ (1)
Net losses (gains) reclassified from accumulated other comprehensive income			(13)			0		(11)		(3)		1		0
Net current period other comprehensive income (loss)			74			4		72		(2)		1		(1)
Accumulated other comprehensive loss, net	(165)		(165)		(239)	(49)	(53)	103	31	(108)	(106)	(109)	(110)	(2)	(1)
Provision for income tax	$ 187	$ 216	$ 326	$ 292				$ 61	$ 18	$ (66)	$ (66)	$ (61)	$ (61)