Equity Compensation - Schedule of Assumption Used to Estimate the Fair Value of Stock-Based Awards (Details)	3 Months Ended	9 Months Ended
Oct. 31, 2025	Oct. 31, 2024	Oct. 31, 2025	Oct. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected dividends			0.00%
Performance Stock Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of expected volatilities, minimum (in percentage)			29.70%	29.40%
Range of expected volatilities, maximum (in percentage)			33.40%	31.40%
Expected dividends	0.00%	0.00%	0.00%	0.00%
Range of risk-free interest rates, minimum (in percentage)			3.80%
Range of risk-free interest rates, maximum (in percentage)			4.10%
Range of risk-free interest rates (in percentage)				5.20%
ESPP
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of expected volatilities, minimum (in percentage)	28.30%	29.10%	28.30%	28.70%
Range of expected volatilities, maximum (in percentage)	29.60%	32.00%	29.60%	34.50%
Expected dividends	0.00%	0.00%	0.00%	0.00%
Range of risk-free interest rates, minimum (in percentage)	3.60%	3.60%	3.60%	3.60%
Range of risk-free interest rates, maximum (in percentage)	3.80%	4.60%	4.30%	5.40%
ESPP \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of expected lives (in years)	6 months	6 months	6 months	6 months
ESPP \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Range of expected lives (in years)	2 years	2 years	2 years	2 years

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.

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The estimated measure of the maximum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The estimated measure of the minimum percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period.

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The risk-free interest rate assumption that is used in valuing an option on its own shares.

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The maximum risk-free interest rate assumption that is used in valuing an option on its own shares.

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- Definition

The minimum risk-free interest rate assumption that is used in valuing an option on its own shares.

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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.

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Expected term of award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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