Restructuring and Other - Schedule of Restructuring and Other and Other Unusual Charges or Benefits (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Restructuring Cost and Reserve [Line Items]
Restructuring and other	$ 40.9	$ 52.5	$ 75.8	$ 61.5
Total restructuring and other and other unusual charges not included in restructuring and other	45.0	52.5	88.3	61.0
Content impairment	$ 7.3		7.3
Number of positions eliminated, period percent	8.00%
Expected cost	$ 26.1		26.1
Severance costs	14.6		14.6
Insurance recoveries	0.0	0.1	2.1	0.6
Corporate and Reconciling Items
Restructuring Cost and Reserve [Line Items]
Restructuring and other	40.9	52.5	75.8	61.5
COVID-19 related (charges) benefit included in direct operating expense	0.0	0.0	(2.1)	(0.5)
Unallocated rent cost included in direct operating expense	4.1	0.0	14.6	0.0
Direct Operating Expense
Restructuring Cost and Reserve [Line Items]
COVID-19 related (charges) benefit included in direct operating expense	0.0	0.0	(2.1)	(0.5)
Content and other impairments
Restructuring Cost and Reserve [Line Items]
Restructuring and other	7.3	0.0	25.8	0.0
Severance
Restructuring Cost and Reserve [Line Items]
Restructuring and other	20.3	28.1	24.6	31.6
Restructuring charges			19.9	24.3
Transaction and Other Costs
Restructuring Cost and Reserve [Line Items]
Restructuring and other	$ 13.3	24.4	$ 25.4	29.9
COVID-19 related (charges) benefit included in direct operating expense		$ 16.6		$ 16.6
Transaction and Other Costs | Consolidated Entity
Restructuring Cost and Reserve [Line Items]
Ownership percentage		51.00%		51.00%