Stockholders' Equity - Share Repurchase Activity (Details) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
Apr. 30, 2026	Apr. 30, 2025
Equity [Abstract]
Number of shares repurchased (in shares)	6,792	2,265
Aggregate purchase price	$ 318,352	$ 183,838

Number of shares that have been repurchased and retired during the period.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
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-SubTopic 10
-Topic 505
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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-Name Accounting Standards Codification
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 210
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
-Topic 505
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-Section S99
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Name:	us-gaap_StockRepurchasedAndRetiredDuringPeriodShares
Namespace Prefix:	us-gaap_
Data Type:	xbrli:sharesItemType
Balance Type:	na
Period Type:	duration