Segment Information - Schedule of Adjusted Share-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total share-based compensation expense	$ 19.9	$ 17.4	$ 32.5	$ 29.5
Amount included in restructuring and other	(4.6)	0.0	(4.6)	(0.5)
Adjusted share-based compensation	15.3	17.4	27.9	29.0
Restructuring and other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total share-based compensation expense	4.6	0.0	4.6	0.5
Corporate and Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted share-based compensation	15.3	17.4	27.9	29.0
Corporate and Reconciling Items | Restructuring and other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Amount included in restructuring and other	$ (4.6)	$ 0.0	$ (4.6)	$ (0.5)