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Description of Business, Basis of Presentation and Significant Accounting Policies (Investment in Films and Television Programs and Licensed Program Rights) (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Capitalized interest for films and television programs produced	$ 12.8	$ 2.8	$ 3.8
Ultimate revenue, estimates used, maximum term, motion picture	10 years
Ultimate revenue, estimates used, maximum term, television series	10 years
Ultimate revenue, estimates used, term, television series in production	5 years
Ultimate revenue, estimates used, maximum term, acquired libraries	20 years
Projects in development, potential trigger for write-off of development costs, time period from date of initial investment	3 years

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Film, Monetized on Its Own, Amortization Period, Acquired Libraries

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Amount of interest capitalized during the period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 835
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=6450988&loc=d3e26243-108391

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