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Restructuring and Related Charges (Narratives) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2023 | Dec. 31, 2022
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring charges, net of reversals and impairment | $ 9.2 | $ 0.5 | $ 11.9 | $ 1.0
2023 Plan |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Expected restructuring charges | 10.0 |  | 10.0 |
2023 Plan | Move Cost |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring charges | $ 0.2 |  | 0.2 |
2023 Plan | Maximum |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring project completion, Duration | 12 months |  |  |
2023 Plan | Minimum |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring project completion, Duration | 9 months |  |  |
Q2 2024 Plan |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring charges | $ 8.8 |  |  |
Expected restructuring charges | 4.5 |  | 4.5 |
Restructuring liabilities | 6.2 |  | 6.2 |
Q1 2024 Plan |  |  |  |
Restructuring Cost And Reserve [Line Items] |  |  |  |
Restructuring charges, net of reversals and impairment | $ 0.2 |  | $ 2.9 |

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