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Restructuring and Other (Restructuring and Other) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
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Sep. 30, 2019 | Sep. 30, 2018 | Sep. 30, 2019 | Sep. 30, 2018
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and other |  | $ 7.6 | $ 15.0 | $ 13.1 | $ 25.6
Severance |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and other | [1] | 2.2 | 2.9 | 6.2 | 3.7
Transaction and related costs |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and other | [2] | 5.4 | 12.1 | 6.9 | 21.9
Cash | Severance |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and other | [1] | 2.2 | 2.9 | 5.9 | 3.7
Accelerated vesting on equity awards | Severance |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and other | [1] | $ 0.0 | $ 0.0 | $ 0.3 | $ 0.0
[1] | Severance costs in the three and six months ended September 30, 2019 and 2018 were primarily related to restructuring activities in connection with recent acquisitions, and other cost-saving initiatives.
[2] | Transaction and related costs in the three and six months ended September 30, 2019 and 2018 reflect transaction, integration and legal costs associated with certain strategic transactions, restructuring activities and legal matters. In the three and six months ended September 30, 2018, these costs were primarily related to the legal fees associated with the Starz class action lawsuits and other matters, and to a lesser extent, costs related to the acquisition of 3 Arts Entertainment and other strategic transactions.

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