v3.24.2.u1
Changes in Accumulated Other Comprehensive Income (Loss) by Component - Summary of Components of AOCI (Details) - USD ($)
$ in Millions
 12 Months Ended
Jun. 30, 2024
Jun. 30, 2023
Jun. 30, 2022
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance $ 2,240.6 $ 1,919.1 $ 1,809.1
Other comprehensive income (loss) before reclassifications (48.0) (59.3) (238.5)
Amounts reclassified from accumulated other comprehensive income/(loss) 1.1 0.9 2.8
Ending balance 2,168.2 2,240.6 1,919.1
Foreign Currency Translation      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance (273.6) (214.1) 32.9
Other comprehensive income (loss) before reclassifications (46.8) (59.4) (247.0)
Amounts reclassified from accumulated other comprehensive income/(loss) 0.0 0.0 0.0
Ending balance (320.3) (273.6) (214.1)
Pension and Post- Retirement Liabilities      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance (4.6) (4.8) (15.4)
Other comprehensive income (loss) before reclassifications (1.3) 0.1 8.6
Amounts reclassified from accumulated other comprehensive income/(loss) 0.2 0.1 2.0
Ending balance (5.7) (4.6) (4.8)
Cash Flow Hedge      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance (6.5) (7.4) (8.2)
Other comprehensive income (loss) before reclassifications 0.0 0.0 0.0
Amounts reclassified from accumulated other comprehensive income/(loss) 0.8 0.8 0.8
Ending balance (5.7) (6.5) (7.4)
AOCI Attributable to Parent      
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]      
Beginning balance (284.7) (226.3) 9.2
Ending balance $ (331.7) $ (284.7) $ (226.3)