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Capital Stock (Share-based Compensation Expense by Category) (Details) - USD ($) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Sep. 30, 2022 | Sep. 30, 2021 | Sep. 30, 2022 | Sep. 30, 2021
Share-Based Compensation Expense [Line Items] |  |  |  |
Share-based compensation expense | $ 26.6 | $ 20.4 | $ 35.0 | $ 54.9
Direct operating |  |  |  |
Share-Based Compensation Expense [Line Items] |  |  |  |
Share-based compensation expense | 0.6 | 0.5 | 0.8 | 0.5
Distribution and marketing |  |  |  |
Share-Based Compensation Expense [Line Items] |  |  |  |
Share-based compensation expense | 0.2 | 0.2 | 0.4 | 0.3
General and administration |  |  |  |
Share-Based Compensation Expense [Line Items] |  |  |  |
Share-based compensation expense | 25.8 | 19.7 | 33.2 | 54.1
Restructuring and other |  |  |  |
Share-Based Compensation Expense [Line Items] |  |  |  |
Share-based compensation expense | $ 0.0 | $ 0.0 | $ 0.6 | $ 0.0

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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 Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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