Expenses (Costs Related To Acquisition And Restructuring) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2014	Jun. 30, 2013
Other Expenses [Abstract]
Acquisition costs	$ 15	$ 19	$ 36	$ 34
Restructuring charges, net	13	11	25	10
Total acquisition and restructuring costs	$ 28	$ 30	$ 61	$ 44