Subsequent Events (Details) (USD $) In Millions, unless otherwise specified	1 Months Ended
	Jan. 31, 2014
Subsequent Event | Minimum
Subsequent Event [Line Items]
Expected cost of restructuring	$ 100
Restructuring and Related Cost, Expected Cost, to be Settled with Cash	95
Subsequent Event | Maximum
Subsequent Event [Line Items]
Expected cost of restructuring	120
Restructuring and Related Cost, Expected Cost, to be Settled with Cash	114
All 2014 Acquisitions [Domain] | VMware
Subsequent Event [Line Items]
Payments to Acquire Businesses, Gross	1,181
Payments to Acquire Business, Other	$ 364