Customer Financing (Schedule Of Customer Financing) (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Customer Financing [Abstract]
Investment in sales-type/finance leases	$ 886	$ 944
Notes	410	412
Total financing receivables	1,296	1,356
Less allowance for losses on receivables	(66)	(18)	$ (17)	$ (17)
Total Financing Receivables, Net	1,230	1,338
Operating lease equipment, at cost, less accumulated depreciation of $62 and $58	507	474
Operating Lease, Accumulated Depreciation	62	58
Total	$ 1,737	$ 1,812