Significant Accounting Policies - Operating Assets and Facilities (Details)	12 Months Ended
	Dec. 31, 2021
Minimum [Member] | Railcars [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	15 years
Minimum [Member] | 3724 Aircraft Engines and Engine Parts
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	20 years
Minimum [Member] | Locomotives [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	15 years
Minimum [Member] | Containers
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	15 years
Minimum [Member] | Buildings [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	40 years
Minimum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	5 years
Minimum [Member] | Industrial Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	5 years
Maximum [Member] | Railcars [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	45 years
Maximum [Member] | 3724 Aircraft Engines and Engine Parts
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	25 years
Maximum [Member] | Locomotives [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	25 years
Maximum [Member] | Marine vessels [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	30 years
Maximum [Member] | Containers
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	25 years
Maximum [Member] | Buildings [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	50 years
Maximum [Member] | Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	15 years
Maximum [Member] | Industrial Equipment [Member]
Property, Plant and Equipment [Line Items]
Estimated useful lives of depreciable assets, minimum	30 years