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Note 1. Summary of Significant Accounting Policies Lessee Accounting (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lessee, Operating Lease, Renewal Term |  | 5 years |  |  |
Lessee, Operating Lease, Option to Terminate |  | one year |  |  |
Finance Lease, Principal Payments |  | $ 0.0 |  |  |
Operating lease expense |  | 18.2 | $ 15.2 | $ 15.1 |
Short-term lease expense |  | 0.4 | 0.2 | 2.1 |
Operating Lease, Payments |  | 18.2 | 15.2 | 15.1 |
Right-of-use assets recognized in exchange for new lease liabilities (1) |  | 28.8 | 23.0 | $ 54.5 | [1]
Right-of-use assets (2) | [2] | $ 93.1 | $ 82.8 |  |
Lease liabilities (3) | [3] | Other liabilities | Other liabilities |  |
Weighted average remaining lease term |  | 9 years 10 months 24 days | 10 years 9 months 18 days |  |
Weighted average discount rate |  | 2.80% | 3.00% |  |
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 |  |  |
Less: Present value adjustment |  | $ (18.9) |  |  |
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible Enumeration] |  | Other assets | Other assets |  |
Minimum [Member] |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lessee, Operating Lease, Term of Contract |  | 1 year |  |  |
Maximum [Member] |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
Lessee, Operating Lease, Term of Contract |  | 14 years |  |  |
Railcar Leasing and Management Services Group [Member] |  |  |  |  |
Lessee, Lease, Description [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 |  |  |
Consolidated Subsidiaries, Excluding Leasing [Member] |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |
2023 |  | 8.9 |  |  |
2024 |  | 7.7 |  |  |
2025 |  | 7.0 |  |  |
2026 |  | 6.6 |  |  |
2027 |  | 6.5 |  |  |
Thereafter |  | 56.4 |  |  |
Lessee, Operating Lease, Liability, to be Paid |  | $ 93.1 |  |  |
[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.

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