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Segment Information (Adjusted Share-Based Compensation) (Details) - USD ($) $ in Millions | 3 Months Ended | 9 Months Ended
--- | --- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2019 | Dec. 31, 2018
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Share-based compensation expense |  | $ 17.2 | $ 13.5 | $ 41.3 | $ 43.7
Adjusted share-based compensation |  | 17.2 | 11.1 | 41.0 | 41.3
Corporate and reconciling items |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Adjusted share-based compensation | [1] | 17.2 | 11.1 | 41.0 | 41.3
General and administrative expense |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Share-based compensation expense |  | 16.3 | 10.5 | 39.5 | 40.2
Restructuring and other |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Share-based compensation expense |  | 0.0 | 2.4 | 0.3 | 2.4
Restructuring and other | Corporate and reconciling items |  |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |  |
Amount included in restructuring and other | [2] | $ 0.0 | $ (2.4) | $ (0.3) | $ (2.4)
[1] | The following table reconciles total share-based compensation expense to adjusted share-based compensation expense:
| Three Months Ended |  | Nine Months Ended
| December 31, |  | December 31,
| 2019 |  | 2018 |  | 2019 |  | 2018
|  |  |  |  | (Amounts in millions)
Total share-based compensation expense | $ | 17.2 |  |  | $ | 13.5 |  |  | $ | 41.3 |  |  | $ | 43.7 |
Less: |  |  |  |  |  |  |
Amount included in restructuring and other(i) | — |  |  | (2.4 | ) |  | (0.3 | ) |  | (2.4 | )
Adjusted share-based compensation | $ | 17.2 |  |  | $ | 11.1 |  |  | $ | 41.0 |  |  | $ | 41.3 |
(i) Represents share-based compensation expense included in restructuring and other expenses reflecting the impact of the acceleration of certain vesting schedules for equity awards pursuant to certain severance arrangements.
[2] | Represents share-based compensation expense included in restructuring and other expenses reflecting the impact of the acceleration of certain vesting schedules for equity awards pursuant to certain severance arrangements.

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors, certain consultants qualifying for treatment as employees, including the impact of compensation cost recognized as a result of an occurrence of an event that accelerates its recognition. + References No definition available. + Details
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- Definition Amount of additional cost recognized for award under share-based payment arrangement from occurrence of event accelerating recognition of cost. + References No definition available. + Details
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