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v3.21.1

Long-Term Debt (Tables) | 3 Months Ended
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Mar. 31, 2021
Debt Disclosure [Abstract] |
Summary of Long-Term Debt | Long-term debt consisted of the following:
(Millions of dollars) |  | March 31, 2021 |  | December 31, 2020
3.75% senior notes due 2031 (net of unamortized discount of $6.1 at March 31, 2021) |  | $ | 493.9 |  |  | $ | — |
5.625% senior notes due 2027 (net of unamortized discount of $2.3 at March 31, 2021 and $2.4 at December 2020) |  | 297.7 |  |  | 297.6 |
4.75% senior notes due 2029 (net of unamortized discount of $5.3 at March 31, 2021 and $5.4 at December 31, 2020) |  | 494.7 |  |  | 494.6 |
Term loan due 2023 (effective interest rate of n/a at March 31, 2021 and 2.67% at December 31, 2020) |  | — |  |  | 212.5 |
Term loan due 2028 (effective interest rate of 2.27% at March 31, 2021) net of unamortized discount of $1.0 at March 31, 2021 |  | 399.0 |  |  | — |
Capitalized lease obligations, autos and equipment, due through 2025 |  | 3.2 |  |  | 2.1 |
Capitalized lease obligations, buildings, due through 2055 |  | 134.2 |  |  | — |
Less unamortized debt issuance costs |  | (12.7) |  |  | (4.4) |
Total long-term debt |  | 1,810.0 |  |  | 1,002.4 |
Less current maturities |  | 13.2 |  |  | 51.2 |
Total long-term debt, net of current |  | $ | 1,796.8 |  |  | $ | 951.2 |

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- Definition Tabular disclosure of information pertaining to short-term and long-debt instruments or arrangements, including but not limited to identification of terms, features, collateral requirements and other information necessary to a fair presentation. + References No definition available. + Details
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