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v3.19.1

Noncontrolling Interests (Narrative) (Details) - USD ($) $ in Millions |  |  | 12 Months Ended
--- | --- | --- | ---
May 29, 2018 | Nov. 12, 2015 | Mar. 31, 2019 | Mar. 31, 2018 | Mar. 31, 2017
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |
Initial fair value of redeemable noncontrolling interests |  |  | $ 15.8 | $ 0.0 | $ 0.0
3 Arts Entertainment |  |  |  |  |
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |
Initial fair value of redeemable noncontrolling interests | $ 15.8 |  |  |  |
Redeemable noncontrolling interest, ownership percentage held by noncontrolling interest holders | 49.00% |  |  |  |
First Put/ Call Option, Term |  |  | 5 years |  |
Put rights exercise period |  |  | 60 days |  |
Period after expiration of put rights that call rights begin |  |  | 30 days |  |
Call rights exercise period |  |  | 60 days |  |
Pilgrim Media Group |  |  |  |  |
Redeemable Noncontrolling Interest [Line Items] |  |  |  |  |
Initial fair value of redeemable noncontrolling interests |  | $ 90.1 |  |  |
Redeemable noncontrolling interest, ownership percentage held by noncontrolling interest holders |  | 37.50% |  |  |
Portion of noncontrolling interest redeemable after first term, five years after November 12, 2015 |  |  | 17.50% |  |
First Put/ Call Option, Term |  |  | 5 years |  |
Second Put/ Call Option, Term |  |  | 7 years |  |

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