Customer Financing (Schedule Of Customer Financing) (Details) - USD ($) $ in Millions	Jun. 30, 2016	Dec. 31, 2015
Customer Financing [Abstract]
Investment in sales-type/finance leases	$ 1,510	$ 1,620
Notes	306	256
Total financing receivables	1,816	1,876
Operating lease equipment, at cost, less accumulated depreciation of $226 and $338	1,356	1,710
Gross customer financing	3,172	3,586
Less allowance for losses on receivables	(12)	(16)
Total	3,160	3,570
Operating lease equipment- Accumulated depreciation	$ 226	$ 338