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Investment In Films and Television Programs and Licensed Program Rights (Impairments) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2022	Dec. 31, 2021
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	$ 81.4	$ 2.6	$ 299.6	$ 29.3
Restructuring and other	$ 75.3	$ 0.5	$ 316.5	$ 7.2
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
Content and other impairments
Segment Reporting Information [Line Items]
Restructuring and other	$ 80.8	$ 0.0	$ 299.7	$ 0.0
Not included in segment operating results
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	80.8	0.0	293.8	0.0
Motion Picture | Reportable Segments
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	0.6	1.1	1.1	1.2
Television Production | Reportable Segments
Segment Reporting Information [Line Items]
Write downs on investments in films and television programs and licensed program rights	0.0	$ 1.5	4.7	$ 28.1
Media Networks | Content and other impairments
Segment Reporting Information [Line Items]
Restructuring and other	$ 80.8		$ 293.8

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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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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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