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Short-term and Long-term Debt (Tables) | 12 Months Ended
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Dec. 31, 2022
Debt Disclosure [Abstract] |
Short-term and Long-term Debt | Short-term and long-term debt as of 2022 and 2021 year end consisted of the following:
(Amounts in millions) |  | 2022 |  | 2021
3.25% unsecured notes due 2027 |  | 300.0 |  |  | 300.0 |
4.10% unsecured notes due 2048 |  | 400.0 |  |  | 400.0 |
3.10% unsecured notes due 2050 |  | 500.0 |  |  | 500.0 |
Other debt* |  | 1.0 |  |  | 0.3 |
|  | 1,201.0 |  |  | 1,200.3 |
Less: notes payable |  | (17.2) |  |  | (17.4) |
Total long-term debt |  | $ | 1,183.8 |  |  | $ | 1,182.9 |
* Includes unamortized debt issuance costs. |

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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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