Leases - Components of Equipment Leasing Income (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019	Jun. 30, 2020	Jun. 30, 2019
Sales-type and direct financing leases
Interest income on lease receivable	$ 27	$ 31	$ 55	$ 61
Interest income related to accretion of unguaranteed residual asset	3	3	6	6
Interest income on deferred fees and costs	0	0	0	0
Total sales-type and direct financing lease income	30	34	61	67
Operating leases
Operating lease income related to lease payments	35	33	69	66
Other operating leasing gains	25	11	21	15
Total operating lease income and other leasing gains	60	44	90	81
Total lease income	$ 90	$ 78	$ 151	$ 148