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Financing Arrangements - Long-term debt (Details) - USD ($) $ in Millions | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Dec. 31, 2019
Financing Arrangements |  |
Total debt | $ 200.0 | $ 310.0
Less debt issuance costs (deduction from liability) | (1.8) | (0.8)
Less current maturities |  | (105.0)
Total long-term debt | 198.2 | $ 204.2
Principal payments during each of the next five years and thereafter |  |
2021 | 0.0 |
2022 | 200.0 |
5.05% Senior notes due 2020 |  |
Financing Arrangements |  |
Interest rate (as a percent) |  | 5.05%
Total debt |  | $ 75.0
Term Loan due February 2021 |  |
Financing Arrangements |  |
Total debt |  | 225.0
Line of Credit matures February 2021 |  |
Financing Arrangements |  |
Total debt |  | 10.0
Line of Credit matures February 2022 |  |
Financing Arrangements |  |
Total debt | $ 200.0 |
Letters of credit |  |
Financing Arrangements |  |
Term of letters of credit from the date of issuance | 1 year |
Principal payments during each of the next five years and thereafter |  |
Letters of credit outstanding | $ 16.2 | $ 25.8

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