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Restructuring and Other (Restructuring and Other) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2017 | Dec. 31, 2016
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and other |  | $ 21.4 | $ 54.0 | $ 35.8 | $ 72.4
Severance |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and other | [1] | 12.0 | 21.6 | 13.0 | 26.0
Severance | Accounts Payable and Accrued Liabilities |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Remaining severance liability, expected to be paid in next 12 months |  | 14.8 |  | 14.8 |
Transaction and related costs |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and other | [2] | 1.0 | 32.4 | 14.4 | 46.4
Development expense |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and other | [3] | 8.4 | 0.0 | 8.4 | 0.0
Cash | Severance |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and other | [1] | 9.1 | 21.6 | 10.1 | 23.6
Accelerated vesting on equity awards | Severance |  |  |  |  |
Restructuring Cost and Reserve [Line Items] |  |  |  |  |
Restructuring and other | [1] | $ 2.9 | $ 0.0 | $ 2.9 | $ 2.4
[1] | Severance costs in the three and nine months ended December 31, 2017 were primarily related to the restructuring of the Motion Pictures business in connection with the acquisition of Good Universe and additional workforce reductions in connection with the Starz Merger (see Note 2). Severance costs in the three and nine months ended December 31, 2016 were primarily related to workforce reductions for redundancies in connection with the Starz Merger. As of December 31, 2017, the remaining severance liability was approximately $14.8 million, which is expected to be paid in the next 12 months.
[2] | Transaction and related costs in the three and nine months ended December 31, 2017 and 2016 reflect transaction, integration and legal costs associated with certain strategic transactions, including the Starz Merger (see Note 2) and the sale of EPIX (see Note 4). These costs include the legal fees associated with the class action lawsuits and certain other legal matters.
[3] | Development expense in the three and nine months ended December 31, 2017 represents write-downs resulting from the restructuring of the Motion Pictures business in connection with the acquisition of Good Universe and new management's decisions around the creative direction on certain development projects which were abandoned in the quarter.

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- Definition Carrying amount as of the balance sheet date of known and estimated obligations associated with exit from or disposal of business activities or restructurings pursuant to a duly authorized plan, which are expected to be paid in the next twelve months or in the normal operating cycle if longer. Costs of such activities include those for one-time termination benefits, termination of an operating lease or other contract, consolidating or closing facilities, relocating employees, and costs associated with an ongoing benefit arrangement, but excludes costs associated with the retirement of a long-lived asset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SAB Topic 5.P.4(b)(2)) -URI http://asc.fasb.org/extlink&oid=27011515&loc=d3e140904-122747 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 420 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6394359&loc=d3e17939-110869 + Details
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