Leases - Property, Plant and Equipment Related to Operating Leases (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, plant and equipment	$ 9,540	$ 7,943
Accumulated depreciation	(2,323)	(1,880)
Net property, plant and equipment	7,217	6,063
Assets Leased to Others
Property, Plant and Equipment [Line Items]
Property, plant and equipment	7,201	6,942
Accumulated depreciation	(1,964)	(1,649)
Net property, plant and equipment	$ 5,237	$ 5,293