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Income Taxes (Narrative) (Details) € in Millions, $ in Millions | 3 Months Ended |
--- | --- | ---
Jun. 30, 2024 USD ($) | Mar. 31, 2024 USD ($) | Mar. 31, 2023 USD ($) | Feb. 29, 2024 USD ($) | Feb. 29, 2024 EUR (€)
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |
Discreet income tax benefit |  | $ 6.6 | $ 43.8 |  |
Income Tax Expense (Benefit) Excluding Discrete Items |  | 19.5 | 16.2 |  |
Income tax benefit |  | $ 12.9 | $ (27.6) |  |
Luxembourg subsidiaries |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |
Liability for Uncertainty in Income Taxes, Noncurrent |  |  |  | $ 63.0 | € 60.0
Luxembourg subsidiaries | Forecast |  |  |  |  |
Effective Income Tax Rate Reconciliation [Line Items] |  |  |  |  |
Income tax benefit | $ (63.0) |  |  |  |

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