Note 6. Railcar Leasing and Management Services Group Other Operating Lease Obligations and Revenues (Details) $ in Millions	Dec. 31, 2021 USD ($)
Sale Leaseback Transaction [Line Items]
2022	$ 18.1
2023	16.3
2024	11.8
2025	9.4
2026	8.7
Thereafter	60.8
Lessee, Operating Lease, Liability, to be Paid	125.1
Railcar Leasing and Management Services Group [Member]
Sale Leaseback Transaction [Line Items]
2022	10.9
2023	9.1
2024	5.6
2025	3.8
2026	3.5
Thereafter	4.1
Lessee, Operating Lease, Liability, to be Paid	37.0
2022	546.5	[1]
2023	411.5	[1]
2024	307.5	[1]
2025	219.9	[1]
2026	140.0	[1]
Thereafter	260.2	[1]
Total	1,885.6	[1]
Railcar Leasing and Management Services Group [Member] | Property Lease Guarantee [Member]
Sale Leaseback Transaction [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	1.7
Other Third Parties [Member] | Railcar Leasing and Management Services Group [Member]
Sale Leaseback Transaction [Line Items]
2022	6.3
2023	3.9
2024	2.2
2025	1.4
2026	0.8
Thereafter	0.1
Total	14.7
Building [Member] | Railcar Leasing and Management Services Group [Member]
Sale Leaseback Transaction [Line Items]
Lessee, Operating Lease, Liability, to be Paid	1.7
Railroad Transportation Equipment [Member] | Railcar Leasing and Management Services Group [Member]
Sale Leaseback Transaction [Line Items]
2022	10.5
2023	8.8
2024	5.3
2025	3.5
2026	3.2
Thereafter	4.0
Lessee, Operating Lease, Liability, to be Paid	$ 35.3

[1] Total contractual minimum rental revenues on operating leases relates to our wholly-owned and partially-owned subsidiaries and sub-lease rental revenues associated with the Leasing Group's operating lease obligations.