Expenses (Costs Related To Acquisition And Restructuring) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2014	Sep. 30, 2013	Sep. 30, 2014	Sep. 30, 2013
Other Expenses [Abstract]
Acquisition costs	$ 12	$ 18	$ 48	$ 52
Restructuring charges, net	8	12	33	22
Total acquisition and restructuring costs	$ 20	$ 30	$ 81	$ 74