Customer Financing (Schedule Of Customer Financing) (Details) - USD ($) $ in Millions	Sep. 30, 2019	Dec. 31, 2018
Customer Financing [Abstract]
Investment in sales-type/finance leases	$ 1,016	$ 1,125
Notes	446	730
Total financing receivables	1,462	1,855
Operating lease equipment, at cost, less accumulated depreciation of $245 and $203	789	782
Operative lease incentive		250
Gross customer financing	2,251	2,887
Less allowance for losses on receivables	(8)	(9)
Total	2,243	2,878
Operating lease equipment- Accumulated depreciation	$ 245	$ 203