Derivative Financial Instruments And Hedging Activities - Derivatives Income (Losses) Recognized in Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Interest rate contracts	$ 7	$ 1	$ 1	$ (9)
Foreign currency derivatives	(58)	(26)	11	(42)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net	$ (51)	$ (25)	$ 12	$ (51)