Customer Financing (Schedule Of Customer Financing) (Details) - USD ($) $ in Millions	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2020
Customer Financing [Abstract]
Investment in sales-type/finance leases	$ 944	$ 919
Notes	412	420
Total financing receivables	1,356	1,339
Less allowance for losses on receivables	(18)	(17)	$ (5)
Financing receivables, net	1,338	1,322
Operating lease equipment, at cost, less accumulated depreciation of $58 and $209	474	715
Operating lease equipment, accumulated depreciation	58	209
Total	$ 1,812	$ 2,037