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Investment In Films and Television Programs and Licensed Program Rights (Impairments) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2024	Sep. 30, 2023	Sep. 30, 2024	Sep. 30, 2023
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	$ 13.5	$ 243.8	$ 15.7	$ 271.9
Film, Monetized on Its Own, and Film Group, Impairment, Statement of Income [Extensible Enumeration]	Total direct operating expense on consolidated statements of operations, Restructuring and other	Total direct operating expense on consolidated statements of operations, Restructuring and other	Total direct operating expense on consolidated statements of operations, Restructuring and other	Total direct operating expense on consolidated statements of operations, Restructuring and other
Not included in segment operating results
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	$ (4.8)	$ 211.6	$ (2.8)	$ 239.5
Motion Picture | Reportable Segments
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	18.3	26.8	18.5	27.0
Television Production | Reportable Segments
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	$ 0.0	$ 5.4	$ 0.0	$ 5.4

X

- 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
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4C
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483154/926-20-50-4C

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X

- Definition

Indicates line item in statement of income or comprehensive income 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
-Topic 926
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 4C
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147483154/926-20-50-4C

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- Definition

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+ References

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