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Basis of Presentation (Narrative) (Details) - USD ($) $ / shares in Units, $ in Millions | 3 Months Ended | 6 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Jun. 30, 2024 | Jun. 30, 2023 | Jun. 30, 2024 | Jun. 30, 2023 | Dec. 31, 2024 | Mar. 31, 2024 | Dec. 31, 2023
Basis of Presentation [Line Items] |  |  |  |  |  |  |
Gain (loss) on remeasurement of U.S. dollar denominated intercompany loan | $ (66.2) | $ 27.8 | $ 94.7 | $ 55.2 |  |  |
Repayment of debt |  |  | 79.7 |  |  |  |
Intercompany foreign currency outstanding balance | $ 1,200.0 |  | $ 1,200.0 |  |  |  | $ 1,300.0
Useful life |  |  |  |  |  | 15 years |
Increase in diluted shares | $ 1.51 | $ 1.87 | $ 2.93 | $ 2.79 |  |  |
ASC 250 [Member] |  |  |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |  |  |
Useful life |  |  |  |  |  | 30 years |
Reduction in depreciation and amortization expense after tax | $ 93.0 |  | $ 186.0 |  |  |  |
Reduction in depreciation and amortization expense | $ 102.7 |  | $ 205.4 |  |  |  |
Increase in diluted shares | $ 0.86 |  | $ 1.72 |  |  |  |
ASC 250 [Member] | Scenario, Forecast [Member] |  |  |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |  |  |
Reduction in depreciation and amortization expense after tax |  |  |  |  | $ 372.5 |  |
Reduction in depreciation and amortization expense |  |  |  |  | $ 411.5 |  |
Increase in diluted shares |  |  |  |  | $ 3.44 |  |
Related Party [Member] |  |  |  |  |  |  |
Basis of Presentation [Line Items] |  |  |  |  |  |  |
Intercompany loans funded | $ 9.3 |  | $ 9.3 |  |  |  |

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