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Stock Options Outstanding (Detail) | 9 Months Ended
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Dec. 31, 2019 $ / shares shares
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Options Outstanding, Number of Shares Outstanding | shares | 1,162,679
Options Outstanding, Weighted-Average Remaining Contractual Life (in years) | 6 years 1 month 13 days
Options Outstanding, Weighted-Average Exercise Price | $ 80.25
Options Exercisable , Number of Shares Outstanding | shares | 732,860
Options Exercisable, Weighted-Average Exercise Price | $ 73.27
$23.17 - $29.84 [Member] |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Range of Exercise Prices, Lower Range | 23.17
Range of Exercise Prices, Upper Range | $ 29.84
Options Outstanding, Number of Shares Outstanding | shares | 65,912
Options Outstanding, Weighted-Average Remaining Contractual Life (in years) | 1 year 7 months 6 days
Options Outstanding, Weighted-Average Exercise Price | $ 23.27
Options Exercisable , Number of Shares Outstanding | shares | 65,912
Options Exercisable, Weighted-Average Exercise Price | $ 23.27
$33.43 - $ 37.34 [Member] |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Range of Exercise Prices, Lower Range | 33.43
Range of Exercise Prices, Upper Range | $ 37.34
Options Outstanding, Number of Shares Outstanding | shares | 57,728
Options Outstanding, Weighted-Average Remaining Contractual Life (in years) | 2 years 5 months 16 days
Options Outstanding, Weighted-Average Exercise Price | $ 34.03
Options Exercisable , Number of Shares Outstanding | shares | 57,728
Options Exercisable, Weighted-Average Exercise Price | $ 34.03
$53.22 - $ 77.67 [Member] |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Range of Exercise Prices, Lower Range | 53.22
Range of Exercise Prices, Upper Range | $ 77.67
Options Outstanding, Number of Shares Outstanding | shares | 272,834
Options Outstanding, Weighted-Average Remaining Contractual Life (in years) | 5 years 6 months 11 days
Options Outstanding, Weighted-Average Exercise Price | $ 72.22
Options Exercisable , Number of Shares Outstanding | shares | 201,712
Options Exercisable, Weighted-Average Exercise Price | $ 71.84
$79.73 - $ 106.24 [Member] |
Share Based Compensation Shares Authorized Under Stock Option Plans Exercise Price Range [Line Items] |
Range of Exercise Prices, Lower Range | 79.73
Range of Exercise Prices, Upper Range | $ 106.24
Options Outstanding, Number of Shares Outstanding | shares | 766,205
Options Outstanding, Weighted-Average Remaining Contractual Life (in years) | 6 years 11 months 27 days
Options Outstanding, Weighted-Average Exercise Price | $ 91.49
Options Exercisable , Number of Shares Outstanding | shares | 407,508
Options Exercisable, Weighted-Average Exercise Price | $ 87.63

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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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- Definition The floor of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding exercisable stock options as of the balance sheet date in the customized range of exercise prices for which the market and performance vesting condition has been satisfied. + 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 (c)(iii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The number of shares reserved for issuance pertaining to the outstanding stock options as of the balance sheet date for all option plans in the customized range of exercise prices. + 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 (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The ceiling of a customized range of exercise prices for purposes of disclosing shares potentially issuable under outstanding stock option awards on all stock option plans and other required information pertaining to awards in the customized range. + 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 (g) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Weighted average exercise price as of the balance sheet date for those equity-based payment arrangements exercisable and outstanding. + 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 (c)(1)(iii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition The weighted average price as of the balance sheet date at which grantees could acquire the underlying shares with respect to all outstanding stock options which are in the customized range of exercise prices. + 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 (c)(1)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the 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 (e)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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