Leases - Components of Equipment Leasing Income (Details) $ in Millions	12 Months Ended
	Dec. 31, 2019 USD ($)
Sales-type and direct financing leases
Interest income on lease receivable	$ 121
Interest income related to accretion of unguaranteed residual asset	13
Interest income on deferred fees and costs	0
Total sales-type and direct financing lease income	134
Operating leases
Operating lease income related to lease payments	133
Other operating leasing gains	28
Total operating lease income and other leasing gains	161
Total lease income	$ 295