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Acquisition-Related Intangible Assets, Net - Schedule of Acquired Assets (Detail) - USD ($)
$ in Millions
 3 Months Ended 9 Months Ended
Oct. 31, 2024
Oct. 31, 2023
Oct. 31, 2024
Oct. 31, 2023
Jan. 31, 2024
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount $ 864   $ 864   $ 657
Accumulated Amortization (481)   (481)   (424)
Net Book Value 383   383   233
Amortization of intangible assets 20 $ 16 58 $ 58  
Developed technology          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 473   473   318
Accumulated Amortization (290)   (290)   (256)
Net Book Value 183   183   62
Customer relationships          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 362   362   311
Accumulated Amortization (163)   (163)   (140)
Net Book Value 199   199   171
Backlog          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 15   15   15
Accumulated Amortization (15)   (15)   (15)
Net Book Value 0   0   0
Trade name          
Finite-Lived Intangible Assets [Line Items]          
Gross Carrying Amount 14   14   13
Accumulated Amortization (13)   (13)   (13)
Net Book Value $ 1   $ 1   $ 0