Accumulated Other Comprehensive Income - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended
Apr. 30, 2026	Apr. 30, 2025
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Amount reclassified from accumulated other comprehensive loss	$ 0.0	$ (0.1)

Amount after tax of reclassification adjustments of other comprehensive income (loss).

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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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Reference 7: http://www.xbrl.org/2003/role/disclosureRef
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+ Details