Note 6. Railcar Leasing and Management Services Group Other Operating Lease Obligations and Revenues (Details) $ in Millions	Dec. 31, 2022 USD ($)
Sale Leaseback Transaction [Line Items]
2023	$ 20.9
2024	15.8
2025	13.0
2026	12.3
2027	11.8
Thereafter	59.9
Lessee, Operating Lease, Liability, to be Paid	133.7
Railcar Leasing and Management Services Group [Member]
Sale Leaseback Transaction [Line Items]
2023	12.0
2024	8.1
2025	6.0
2026	5.7
2027	5.3
Thereafter	3.5
Lessee, Operating Lease, Liability, to be Paid	40.6
2023	596.2	[1]
2024	472.6	[1]
2025	369.7	[1]
2026	264.6	[1]
2027	175.5	[1]
Thereafter	265.1	[1]
Total	2,143.7	[1]
Railcar Leasing and Management Services Group [Member] | Property Lease Guarantee [Member]
Sale Leaseback Transaction [Line Items]
Guarantor Obligations, Maximum Exposure, Undiscounted	1.3
Other Third Parties [Member] | Railcar Leasing and Management Services Group [Member]
Sale Leaseback Transaction [Line Items]
2023	9.7
2024	4.7
2025	3.5
2026	1.9
2027	0.5
Thereafter	0.1
Total	20.4
Railroad Transportation Equipment [Member] | Railcar Leasing and Management Services Group [Member]
Sale Leaseback Transaction [Line Items]
2023	11.9
2024	8.0
2025	6.0
2026	5.7
2027	5.3
Thereafter	3.5
Lessee, Operating Lease, Liability, to be Paid	40.4
Building [Member] | Railcar Leasing and Management Services Group [Member]
Sale Leaseback Transaction [Line Items]
Lessee, Operating Lease, Liability, to be Paid	$ 0.2

[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.