Leases - Schedule of Net Book Value of Assets Subject to Leases (Details) - USD ($) $ in Millions	Jun. 30, 2022	Dec. 31, 2021	Jun. 30, 2021
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Lessor asset under operating lease, accumulated depreciation	$ 111
Operating lease equipment, net	7,971	$ 0	$ 0
Railcars and locomotives
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Operating lease equipment, net	7,247
Other equipment
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Operating lease equipment, net	724
Off-lease rail equipment
Property, Plant, and Equipment, Lessor Asset under Operating Lease [Line Items]
Operating lease equipment, net	$ 492