Segment Information - Schedule of Adjusted Share-Based Compensation (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total share-based compensation expense	$ 14.3	$ 24.0	$ 46.9	$ 53.6
Amount included in restructuring and other	0.0	(6.8)	(4.7)	(7.3)
Adjusted share-based compensation	14.3	17.2	42.2	46.3
Restructuring and other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Total share-based compensation expense	0.0	6.8	4.7	7.3
Corporate and Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Adjusted share-based compensation	14.3	17.2	42.2	46.3
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	$ 0.0	$ (6.8)	$ (4.7)	$ (7.3)