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Employee Stock-based Compensation Plans - Composition of Teradata Restricted Stock Grants (Detail) shares in Thousands | 12 Months Ended
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Dec. 31, 2018 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of Shares | shares | 994
Weighted-average fair value of restricted shares units granted (in usd per share) | $ / shares | $ 37.98
Service-based shares |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of Shares | shares | 482
Weighted-average fair value of restricted shares units granted (in usd per share) | $ / shares | $ 39.32
Performance-based shares |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of Shares | shares | 512
Weighted-average fair value of restricted shares units granted (in usd per share) | $ / shares | $ 36.62

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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + 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)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=109197908&loc=d3e5070-113901 + 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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