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v3.24.3

Financing: Long-term Debt (Additional Information) (Details) - USD ($) $ in Millions |  |  | 9 Months Ended
--- | --- | --- | ---
Aug. 23, 2024 | May 16, 2024 | Sep. 30, 2024 | Sep. 30, 2023
Debt Instrument [Line Items] |  |  |  |
Repayment of long term debt |  |  | $ 600.0 | $ 0.0
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Senior Unsecured Notes Due 2035 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Proceeds from Issuance of Debt |  | $ 450.0 |  |
Stated interest rate (percent) |  | 6.00% |  |
Less unamortized deferred financing costs |  | $ 5.2 |  |
Segment Reporting, Reconciling Item, Corporate Nonsegment [Member] | Senior Unsecured Notes Due 2024 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Stated interest rate (percent) | 1.04% |  |  |
Repayment of long term debt | $ 600.0 |  |  |

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