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Stock-Based Compensation Plans - Summary of Performance Share Units Activity (Details) - USD ($) $ / shares in Units, $ in Millions | 12 Months Ended
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Jan. 31, 2023 | Jan. 31, 2022 | Jan. 31, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vested or expected to vest, shares (in shares) | 1,593,433 |  |
Vested or expected to vest, weighted-average exercise price (in dollars per share) | $ 45.54 |  |
Vested or expected to vest, weighted-average remaining contractual life (Year) | 4 years 1 month 6 days |  |
Vested or expected to vest, aggregate intrinsic value | $ 45.7 |  |
Performance Shares [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Number of Units Outstanding (in shares), Beginning | 777,538 | 755,873 |
Weighted-Average Grant Date Fair Value, PSU (in dollars per share), Beginning | $ 35.76 | $ 25.17 |
Weighted-Average Remaining Contractual, PSU (Year) | 4 years 6 months | 4 years 9 months 18 days | 4 years 8 months 12 days
Aggregate Intrinsic Value, PSU | $ 67.9 | $ 57.4 | $ 44.0
Number of PSUs Granted (in shares) | 97,991 | 77,441 |
PSUs Granted, Weighted-Average Granted Date Fair Value (in dollars per share) | $ 64.98 | $ 88.11 |
Performance units issued (in shares) | 39,704 | 44,296 |
Performance units issued, weighted-average granted date fair value (in dollars per share) | $ 54.34 | $ 36.63 |
Exercised (in shares) |  | (100,072) |
Exercised (in dollars per share) |  | $ 9.66 |
Number of Units Outstanding (in shares), Ending | 915,233 | 777,538 | 755,873
Weighted-Average Grant Date Fair Value, PSU (in dollars per share), Ending | $ 38.41 | $ 35.76 | $ 25.17
Vested or expected to vest, shares (in shares) | 915,233 |  |
Vested or expected to vest, weighted-average exercise price (in dollars per share) | $ 38.41 |  |
Vested or expected to vest, weighted-average remaining contractual life (Year) | 4 years 6 months |  |
Vested or expected to vest, aggregate intrinsic value | $ 67.9 |  |
Exercisable, number of units (in shares) | 654,467 |  |
Exercisable, PSU weighted-average granted date fair value (in dollars per share) | $ 26.77 |  |
Exercisable, Weighted-Average Remaining Contractual, PSU (Year) | 3 years 1 month 6 days |  |
Exercisable, Aggregate Intrinsic Value, PSU | $ 48.6 |  |

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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://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(01) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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