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Investments (Equity Method Investments Narrative) (Details) |  | 6 Months Ended |
--- | --- | --- | ---
Mar. 15, 2019 | Sep. 30, 2018 | Sep. 30, 2019
Pop |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Ownership interest sold | 50.00% |  |
Equity method investment, ownership percentage |  | 50.00% |
Redeemable Preferred Stock | Pop |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Rate of dividend on preferred stock |  | 10.00% |
Minimum |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity method investment, ownership percentage |  |  | 12.00%
Maximum |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |
Equity method investment, ownership percentage |  |  | 49.00%

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