Derivative Instruments - Pre-tax Gains (Losses) Associated with Cash Flow Hedges (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Oct. 31, 2023	Oct. 31, 2022	Oct. 31, 2023	Oct. 31, 2022
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) recognized in OCI	$ 67,324	$ 48,058	$ 54,617	$ 110,052
Gains (losses) reclassified from AOCI into income (effective portion)	0	(3,220)	0	(3,220)
Revenues
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) reclassified from AOCI into income (effective portion)	15,625	5,647	49,217	5,985
Costs and expenses
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) reclassified from AOCI into income (effective portion)	839	(11,852)	1,781	(18,636)
Other income (expense), net
Derivative Instruments, Gain (Loss) [Line Items]
Gains (losses) related to non-designated hedges	$ 6,425	$ 7,187	$ 7,857	$ 13,288

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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Amount of gain (loss) recognized in earnings in the period from the increase (decrease) in fair value of foreign currency derivatives not designated as hedging instruments.

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Amount, before tax and reclassification, of gain (loss) from derivative instrument designated and qualifying cash flow hedge included in assessment of hedge effectiveness.

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