Derivative Instruments And Hedging Activities (Details) (USD $)	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012
Derivative Instruments, Gain (Loss) [Line Items]
Average maturity of foreign currency forward contracts, in years	1 year
Cash and equivalents and marketable securities	$ 5,300,000,000
Notional forward foreign exchange contracts outstanding	1,700,000,000	2,500,000,000
Maximum
Derivative Instruments, Gain (Loss) [Line Items]
Maturity of fixed-income securities, in years	5 years
Categories of Investments, Marketable Securities, Available-for-sale Securities [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Marketable Securities	$ 0