Film, Monetized on Its Own and Film, Monetized in Film Group, Number of Titles, Film and Television Libraries

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Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line.

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Percentage of fair value of reporting unit in excess of carrying amount.

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Description of Business, Basis of Presentation and Significant Accounting Policies (Other) (Details) title in Thousands, $ in Millions	12 Months Ended
	Mar. 31, 2022 USD ($) title	Mar. 31, 2021 USD ($)	Mar. 31, 2020 USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Number of titles in library \| title	17
Goodwill	$ 2,764.5	$ 2,764.5	$ 2,833.5
Indefinite-lived Intangible Assets (Excluding Goodwill)	250.0
Advertising expenses	$ 662.4	$ 532.6	$ 782.4
Timing of payment	60 days
Media Networks
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Reporting unit, percentage of fair value in excess of carrying amount	10.00%
Minimum \| Perpetual Nominal Growth Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Goodwill measurement input	0.015
Minimum \| Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Goodwill measurement input	0.105
Maximum \| Perpetual Nominal Growth Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Goodwill measurement input	0.035
Maximum \| Discount Rate
Fair Value Measurement Inputs and Valuation Techniques [Line Items]
Goodwill measurement input	0.118