v3.26.1
Income Taxes (Details) - USD ($)
$ in Millions
3 Months Ended 6 Months Ended
Jul. 31, 2026
Jul. 31, 2025
Jul. 31, 2026
Jul. 31, 2025
Income Tax Disclosure [Abstract]        
Income tax provision (benefit) $ (305) $ 76 $ (172) $ 111
Deferred tax assets $ 374   $ 374