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Share-Based Compensation - Summary of Fair Value Assumptions, Market Performance Units (Details) - Market Performance RSUs | 12 Months Ended
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Jan. 31, 2021 $ / shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Weighted average fair value units granted (in dollars per share) | $ 32.66
Tranche One |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Weighted average fair value units granted (in dollars per share) | 29.04
Tranche Two |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Weighted average fair value units granted (in dollars per share) | 32.94
Chief Executive Officer | Tranche One |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Weighted average fair value units granted (in dollars per share) | 44.32
Chief Executive Officer | Tranche Two |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Weighted average fair value units granted (in dollars per share) | $ 33.19

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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=120381028&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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