Customer Financing (Schedule Of Customer Financing) (Details) - USD ($) $ in Millions	Sep. 30, 2016	Dec. 31, 2015
Customer Financing [Abstract]
Investment in sales-type/finance leases	$ 1,473	$ 1,620
Notes	417	256
Total financing receivables	1,890	1,876
Operating lease equipment, at cost, less accumulated depreciation of $229 and $338	1,887	1,710
Gross customer financing	3,777	3,586
Less allowance for losses on receivables	(11)	(16)
Total	3,766	3,570
Operating lease equipment- Accumulated depreciation	$ 229	$ 338