Revolving Credit Facilities, Lines Of Credit And Short-Term Borrowings (Summary Of The Borrowings Outstanding And Capacity Available Under The Facility) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013
Summary of the borrowings outstanding and capacity available under the facility
Capacity	$ 3,500
Borrowings	255
Letters of Credit	8
Capacity Available	3,237
Future capacity	$ 3,490