Acquisition And Restructuring Costs (Costs Related To Acquisition And Restructuring) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Other Expenses [Abstract]
Acquisition Costs, Period Cost	$ 15	$ 13	$ 28	$ 27
Restructuring charges, net	22	4	30	9
Total Of Acquisition And Restructuring Costs	$ 37	$ 17	$ 58	$ 36