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Business and Summary of Significant Accounting Policies - Stock-based Compensation Expense (Details) | 12 Months Ended
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Jan. 31, 2025 USD ($) period | Jan. 31, 2024 USD ($) | Jan. 31, 2023 USD ($)
Accounting Policies [Abstract] |  |  |
Market capitalization | $ 2,000,000,000.0 |  |
Number of exercise period | period | 4 |  |
Term of exercise period | 6 months |  |
Term of offering period | 24 months |  |
Cash dividends paid | $ 0 | $ 0 | $ 0
Expected dividends | 0.00% |  |

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- Definition Employee Stock Purchase Plan, Number of Exercise Periods + References No definition available. + Details
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- Definition Employee Stock Purchase Plan, Term of Offering Period + References No definition available. + Details
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- Definition Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Volatility, Market Capitalization + References No definition available. + Details
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- Definition Cash outflow in the form of capital distributions and dividends to common shareholders, preferred shareholders and noncontrolling interests. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 230 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 15 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org/1943274/2147482740/230-10-45-15 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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