Net Investments in Operating Leases Contractual Maturities: Minimum Rentals on Operating Lease (Details) $ in Millions	Dec. 31, 2018 USD ($)
Contractual Maturities: Minimum Rentals [Abstract]
Operating Leases, Future Minimum Payments Receivable, Current	$ 4,708
Operating Leases, Future Minimum Payments Receivable, in Two Years	2,929
Operating Leases, Future Minimum Payments Receivable, in Three Years	1,083
Operating Leases, Future Minimum Payments Receivable, in Four Years	83
Operating Leases, Future Minimum Payments Receivable, in Five Years	6
Operating Leases, Future Minimum Payments Receivable	$ 8,809