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Segment Information (Capital Expenditures By Segment) (Details) - USD ($) $ in Millions	12 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2019
Segment Reporting Information [Line Items]
Capital expenditures	$ 35.0	$ 31.1	$ 43.8
Motion Picture
Segment Reporting Information [Line Items]
Capital expenditures	0.0	0.0	0.0
Television Production
Segment Reporting Information [Line Items]
Capital expenditures	0.4	1.2	3.2
Media Networks
Segment Reporting Information [Line Items]
Capital expenditures	24.9	22.4	30.0
Corporate
Segment Reporting Information [Line Items]
Capital expenditures	$ 9.7	$ 7.5	$ 10.6

X

- Definition

The cash outflow for purchases of and capital improvements on property, plant and equipment (capital expenditures), software, and other intangible assets.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 13
-Subparagraph (c)
-URI http://asc.fasb.org/extlink&oid=121586364&loc=d3e3213-108585

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- Definition

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+ References

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