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Segment Information (Adjusted Share-Based Compensation) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2021 | Sep. 30, 2020 | Sep. 30, 2021 | Sep. 30, 2020
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Share-based compensation expense | $ 20.4 | $ 25.6 | $ 54.9 | $ 40.0
Amount included in restructuring and other | 0.0 | (2.8) | 0.0 | (2.8)
Adjusted share-based compensation expense | 20.4 | 22.8 | 54.9 | 37.2
Corporate and reconciling items |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Adjusted share-based compensation expense | 20.4 | 22.8 | 54.9 | 37.2
General and administrative expense |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Share-based compensation expense | 19.7 | 22.1 | 54.1 | 36.0
Restructuring and other |  |  |  |
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items] |  |  |  |
Share-based compensation expense | 0.0 | 2.8 | 0.0 | 2.8
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 | $ 0.0 | $ 2.8 | $ 0.0 | $ 2.8

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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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