Equity - 2016 China Stock Appreciation Rights Plan (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 31, 2026	Jan. 31, 2025	Jan. 31, 2024
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 550,454	$ 493,940	$ 456,907
Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	4 years
Vested (in shares)	144	231	619
Stock-based compensation expense	$ 200	$ 1,600	$ 3,300
Stock-based compensation, liability	200	$ 3,100
Cash paid for exercise of SARs	$ 1,400
SARs exercised (in shares)	6,750
SAR outstanding (in shares)	794,000,000
Nonvested awards (in shares)	0
One Year Anniversary \| Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	1 year
Vesting rights percentage	25.00%
25 to 36 Months \| Stock Appreciation Rights (SARs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	36 months

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date.

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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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Number of non-option equity instruments exercised by participants.

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Percentage of vesting of award under share-based payment arrangement.

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