Preparation Of Interim Financial Statements (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended		0 Months Ended	3 Months Ended	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013	Apr. 02, 2014 Software Non-Network [Member] Pro-Forma [Member]	Jun. 30, 2014 Software Non-Network [Member] Pro-Forma [Member]	Jun. 30, 2014 Software Non-Network [Member] Pro-Forma [Member]	Jun. 30, 2014 Stock Repurchase Program March 2013 [Member]	Mar. 31, 2014 Stock Repurchase Program March 2014 [Member]
Equity, Class of Treasury Stock [Line Items]
Stock Repurchase Program, Number of Shares Authorized to be Repurchased									300
Stock Repurchase Program, Remaining Number of Shares Authorized to be Repurchased	421		421
Treasury Stock, Value, Acquired, Cost Method								$ 1,396
Treasury Stock, Shares, Acquired								42
Property Plant And Equipment [Line Items]
Estimated useful life (years)					5 years 0 months 0 days
Depreciation and amortization expenses	$ 4,550	$ 4,571	$ 9,167	$ 9,100		$ 4,763	$ 9,380