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Income Taxes (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Oct. 31, 2025
Oct. 31, 2024
Oct. 31, 2025
Oct. 31, 2024
Income Tax Disclosure [Abstract]        
Provision (benefit) from income tax $ 11,804 $ 9,151 $ 26,997 $ (804,340)
Release of valuation allowance       $ 837,700
Unrecognized tax benefits 86,200   86,200  
Unrecognized tax benefits that would impact effective tax rate $ 69,100   $ 69,100