Customer Financing (Schedule Of Customer Financing) (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Customer Financing [Abstract]
Investment in sales-type/finance leases	$ 1,659	$ 1,535
Notes	347	370
Total financing receivables	2,006	1,905
Operating lease equipment, at cost, less accumulated depreciation of $461 and $571	1,470	1,677
Gross customer financing	3,476	3,582
Less allowance for losses on receivables	(18)	(21)
Total	3,458	3,561
Operating lease equipment- Accumulated depreciation	$ 461	$ 571