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Segment Information (Capital Expenditures By Segment) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures |  | $ 43.8 | $ 45.9 | $ 25.2
Motion Picture |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures |  | 0.0 | 0.0 | 0.0
Television Production |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures |  | 3.2 | 1.4 | 1.8
Media Networks |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures |  | 30.0 | 31.5 | 10.6
Corporate |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |
Capital expenditures | [1] | $ 10.6 | $ 13.0 | $ 12.8
[1] | Represents unallocated capital expenditures primarily related to the Company's corporate headquarters.

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- 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=109223946&loc=d3e3213-108585 + Details
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