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v3.23.2

Debt (Tables) | 6 Months Ended
--- | ---
Jun. 30, 2023
Debt |
Summary of debt | ​
​ | ​ | ​ | ​ | ​ | ​
​ | June 30, | ​ | December 31,
​ | 2023 |  | 2022
​ | (in millions)
Unsecured revolving credit facility maturing September 3, 2025 | $ | — | ​ | $ | —
Senior unsecured notes, interest payable semi-annually at 4.50%, effective rate of 4.63%, redeemed on January 15, 2023 | ​ | — | ​ | ​ | 500.0
Senior unsecured notes, interest payable semi-annually at 1.30%, effective rate of 1.53%, maturing August 15, 2025 | ​ | 400.0 | ​ | ​ | 400.0
Senior unsecured notes, interest payable semi-annually at 2.15%, effective rate of 2.27%, maturing August 15, 2030 | ​ | 500.0 | ​ | ​ | 500.0
Senior unsecured notes, interest payable semi-annually at 6.85%, effective rate of 6.91%, maturing November 15, 2036 | ​ | 250.0 | ​ | ​ | 250.0
Other notes and revolving credit facilities | ​ | 1.7 | ​ | ​ | 9.6
Total | ​ | 1,151.7 | ​ | ​ | 1,659.6
Less: unamortized discount and debt issuance costs | ​ | (10.5) | ​ | ​ | (12.0)
Less: amounts due within one year and short-term borrowings | ​ | (0.3) | ​ | ​ | (508.2)
Total long-term debt | $ | 1,140.9 | ​ | $ | 1,139.4

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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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