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Capital Stock (Unrecognized Compensation Cost) (Details) $ in Millions | 12 Months Ended
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Mar. 31, 2020 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Total Unrecognized Compensation Cost | $ 63.1
Stock Options |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Total Unrecognized Compensation Cost | $ 34.7
Weighted Average Remaining Years | 2 years 2 months 12 days
Restricted Stock and Restricted Share Units (RSUs) |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Total Unrecognized Compensation Cost | $ 28.4
Weighted Average Remaining Years | 1 year 7 months 6 days

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- Definition Amount of cost not yet recognized for nonvested award under share-based payment arrangement. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (i) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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