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Investment in Films and Television Programs and Licensed Program Rights (Impairments) (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	$ 390.1	$ 73.0	$ 45.1
Not included in segment operating results
Segment Reporting Information [Line Items]
Write-downs to fair value related to motion picture titles	0.0	0.0	15.4
Not included in segment operating results | Direct Operating Expense
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	$ 0.0	$ 36.9	$ 15.4
Film, Monetized on Its Own, and Film Group, Impairment, Statement of Income or Comprehensive Income [Extensible Enumeration]	Total direct operating expense on consolidated statements of operations	Total direct operating expense on consolidated statements of operations	Total direct operating expense on consolidated statements of operations
Not included in segment operating results | Restructuring and Other
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	$ 379.3	$ 0.0	$ 0.0
Film, Monetized on Its Own, and Film Group, Impairment, Statement of Income or Comprehensive Income [Extensible Enumeration]	Restructuring and other	Restructuring and other	Restructuring and other
Motion Picture | Reportable Segments
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	$ 6.2	$ 1.2	$ 19.4
Television Production | Reportable Segments
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	$ 4.6	$ 34.9	$ 10.3

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- Definition

Write downs to fair value recorded during the period related to motion picture titles.

+ References

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- Definition

Amount of impairment loss on capitalized cost for film predominantly monetized on its own and film group.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 50
-Paragraph 4C
-Subparagraph (b)
-URI https://asc.fasb.org/extlink&oid=120154696&loc=SL120155252-107959

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- Definition

Indicates line item in statement in which net income is reported that includes impairment loss on capitalized cost for film predominantly monetized on its own and film group.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 50
-Paragraph 4C
-Subparagraph (c)
-URI https://asc.fasb.org/extlink&oid=120154696&loc=SL120155252-107959

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