Investment in Operating Leases, Net (Schedule Of Depreciation Expense On Operating Lease Assets) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Leases, Operating [Abstract]
Depreciation Expense On Operating Lease Assets	$ 1,368	$ 1,982	$ 2,600
Gross Remarketing (Gains) Losses	(124)	(213)	(351)
Operating Leases, Income Statement, Depreciation Expense on Property Subject to or Held-for-lease	$ 1,244	$ 1,769	$ 2,249