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Contract Balances and Performance Obligations - Contract Assets and Unearned Revenue (Details) - USD ($)
$ in Millions
Jul. 31, 2025
Jan. 31, 2025
Contract assets:    
Contract assets, current $ 460 $ 373
Contract assets, noncurrent 45 44
Total contract assets 505 417
Unearned revenue    
Unearned revenue, current 3,852 4,467
Unearned revenue, noncurrent 65 80
Total unearned revenue 3,917 4,547
Professional Services, Subject to Cancellation and Pro-Rated Refund Rights    
Unearned revenue    
Total unearned revenue $ 73 $ 83