Annual and transition report of foreign private issuers [Sections 13 or 15(d)]

Accumulated Other Comprehensive Loss (Details)

v3.25.1
Accumulated Other Comprehensive Loss (Details)
$ in Millions
 12 Months Ended
Mar. 31, 2025
USD ($)
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Beginning balance $ 1,858.9
Other comprehensive (income) loss 1.6
Ending balance 2,161.5
Restructuring Charges  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Reclassification 8.3
Selling, general and administrative expenses (income)  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Reclassification 0.2
Accumulated Other Comprehensive Loss  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Beginning balance (68.3)
Ending balance (58.2)
Cash Flow Hedges  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Beginning balance 0.2
Other comprehensive (income) loss (0.1)
Ending balance 0.1
Cash Flow Hedges | Restructuring Charges  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Reclassification 0.0
Cash Flow Hedges | Selling, general and administrative expenses (income)  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Reclassification 0.0
Pension Actuarial Gain  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Beginning balance 1.3
Other comprehensive (income) loss 0.1
Ending balance 1.4
Pension Actuarial Gain | Restructuring Charges  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Reclassification 0.0
Pension Actuarial Gain | Selling, general and administrative expenses (income)  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Reclassification 0.0
Foreign Currency Translation Adjustments  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Beginning balance (69.8)
Other comprehensive (income) loss 1.6
Ending balance (59.7)
Foreign Currency Translation Adjustments | Restructuring Charges  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Reclassification 8.3
Foreign Currency Translation Adjustments | Selling, general and administrative expenses (income)  
AOCI Attributable to Parent, Net of Tax [Roll Forward]  
Reclassification $ 0.2