Investment in Operating Leases, Net Investment in Operating Leases, Net (Future Lease Nonresidual Rental Payments) (Details) $ in Millions	Dec. 31, 2018 USD ($)
Future Lease Nonresidual Rental Payments [Abstract]
Operating leases, future payments receivable, current	$ 1,308
Operating leases, future payments receivable, due in two years	830
Operating leases, future payments receivable, due in three years	297
Operating leases, future payments receivable, due in four years	27
Operating leases, future payments receivable, thereafter	3
Operating leases, future payments receivable	$ 2,465