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Investment In Films and Television Programs and Program Rights (Narrative) (Details) - USD ($) $ in Millions	3 Months Ended		6 Months Ended
	Sep. 30, 2018	Sep. 30, 2017	Sep. 30, 2018	Sep. 30, 2017
Investment In Films And Television Programs and Program Rights [Abstract]
Fair value film write-downs	$ 2.5	$ 2.3	$ 7.0	$ 2.6

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Fair value film write-downs recorded during the period.

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Investment In Films And Television Programs and Program Rights.

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