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Note 1. Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2022
Accounting Policies [Abstract]  
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction [Table Text Block]
Unsatisfied Performance Obligations
The following table includes estimated revenue expected to be recognized in future periods related to performance obligations that are unsatisfied or partially satisfied as of December 31, 2022 and the percentage of the outstanding performance obligations as of December 31, 2022 expected to be delivered during 2023:
Unsatisfied performance obligations at December 31, 2022
Total
Amount
Percent expected to be delivered in 2023
 (in millions)
Rail Products Group:
New railcars:
External customers (1)
$3,444.1 
Leasing Group458.9 
$3,903.0 48.5 %
Sustainable railcar conversions$166.5 73.5 %
Railcar Leasing and Management Services Group$75.5 20.4 %
(1) Unsatisfied performance obligations at December 31, 2022 include 15,000 railcars expected to be delivered through 2028, valued at approximately $1.8 billion, associated with a new long-term railcar supply agreement with GATX Corporation.
Lease, Cost
The following table summarizes the impact of our operating leases on our Consolidated Financial Statements (in millions, except lease term and discount rate):
Year Ended
December 31,
202220212020
Consolidated Statement of Operations
Operating lease expense$18.2 $15.2 $15.1 
Short-term lease expense$0.4 $0.2 $2.1 
Consolidated Statement of Cash Flows
Cash flows from operating activities$18.2 $15.2 $15.1 
Right-of-use assets recognized in exchange for new lease liabilities (1)
$28.8 $23.0 $54.5 
December 31, 2022December 31, 2021
Consolidated Balance Sheet
Right-of-use assets (2)
$93.1 $82.8 
Lease liabilities (3)
$114.8 $106.3 
Weighted average remaining lease term9.9 years10.8 years
Weighted average discount rate2.8 %3.0 %
(1) Includes the commencement of the new headquarters facility for the year ended December 31, 2020.
(2) Included in other assets in our Consolidated Balance Sheets.
(3) Included in other liabilities in our Consolidated Balance Sheets.
Lessee, Operating Lease, Liability, Maturity [Table Text Block]
Future contractual minimum operating lease liabilities will mature as follows (in millions):
Leasing GroupNon-Leasing GroupTotal
2023$12.0 $8.9 $20.9 
20248.1 7.7 15.8 
20256.0 7.0 13.0 
20265.7 6.6 12.3 
20275.3 6.5 11.8 
Thereafter3.5 56.4 59.9 
Total operating lease payments$40.6 $93.1 $133.7 
Less: Present value adjustment(18.9)
Total operating lease liabilities$114.8 
Operating Lease, Lease Income
The following table summarizes the impact of our leases in our Consolidated Statements of Operations (in millions):
Year Ended
December 31,
202220212020
Operating lease revenues$679.4 $652.5 $671.4 
Variable operating lease revenues$60.3 $54.2 $51.0 
Interest income on sales-type lease receivables$0.7 $— $— 
Profit recognized at sales-type lease commencement (1)
$1.3 $— $— 
(1) Included in gains on dispositions of property – lease portfolio sales on our Consolidated Statements of Operations.
Lessor, Operating Lease, Payments to be Received, Maturity [Table Text Block]
Future contractual minimum revenues for operating leases will mature as follows (in millions)(1):
2023$596.2 
2024472.6 
2025369.7 
2026264.6 
2027175.5 
Thereafter265.1 
Total$2,143.7 
(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.
Sales-type and Direct Financing Leases, Lease Receivable, Maturity [Table Text Block]
Future contractual minimum lease receivables for sales-type leases will mature as follows (in millions):
2023$1.1 
20241.1 
20251.1 
20261.1 
20271.1 
Thereafter10.1 
Total15.6 
Less: Unearned interest income(5.0)
Net investment in sales-type leases (1)
$10.6 
(1) Included in other assets in our Consolidated Balance Sheets.
Property, Plant, and Equipment Estimated Useful Lives The estimated useful lives are as follows:
Buildings and improvements
5 – 30 years
Leasehold improvementsGenerally over the term of the lease
Machinery and equipment
Generally 3 – 12 years
Information systems hardware and software
3 – 5 years
Railcars in our lease fleet
Generally 35 – 40 years
Schedule of Goodwill [Table Text Block]
Goodwill by segment is as follows:
December 31, 2022December 31, 2021
 (in millions)
Railcar Leasing and Management Services Group$7.1 $1.8 
Rail Products Group188.8 152.4 
$195.9 $154.2 
Schedule of Product Warranty Liability [Table Text Block] The changes in the accruals for warranties for the years ended December 31, 2022, 2021, and 2020 are as follows:
 Year Ended December 31,
202220212020
 (in millions)
Beginning balance$3.1 $11.3 $7.5 
Warranty costs incurred(2.7)(7.4)(2.0)
Warranty originations and revisions3.2 0.1 6.0 
Warranty expirations(0.3)(0.9)(0.2)
Ending balance$3.3 $3.1 $11.3