Inventories and Equipment on Operating Leases, Net - Narrative (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Sep. 30, 2021
Equipment on Operating Leases, Net [Line Items]
Contingent rental revenue on operating leases	$ 62	$ 66	$ 107
Special Purpose Entity (SPE)
Equipment on Operating Leases, Net [Line Items]
Equipment on operating leases, net	$ 8	$ 8
Special Purpose Entity (SPE)
Equipment on Operating Leases, Net [Line Items]
Net book value of rights to payments under operating leases sold				$ 9
Minimum
Equipment on Operating Leases, Net [Line Items]
Equipment on operating lease depreciable lives	4 years
Maximum
Equipment on Operating Leases, Net [Line Items]
Equipment on operating lease depreciable lives	5 years