Customer Financing (Schedule Of Customer Financing) (Details) (USD $) In Millions, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2010
Customer Financing [Abstract]
Investment in sales-type/finance leases	$ 1,699	$ 1,850
Notes	587	592
Operating lease equipment, at cost, less accumulated depreciation of $564 and $628	1,734	2,038
Gross customer financing	4,020	4,480
Less allowance for losses on receivables	(49)	(60)	(70)	(353)
Total	3,971	4,420
Operating lease equipment, accumulated depreciation	$ 564	$ 628