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Income Taxes - Deferred Tax Assets and Liabilities (Detail) - USD ($)
$ in Millions
Apr. 26, 2019
Jan. 25, 2019
Apr. 27, 2018
Components of Deferred Tax Assets and Liabilities [Abstract]      
Reserves and accruals $ 50   $ 57
Net operating loss and credit carryforwards 139   131
Tax expense related to deferred tax assets for equity-based compensation awards 16 $ 6 22
Deferred revenue 205   156
Other 16   29
Gross deferred tax assets 426   395
Valuation allowance (123)   (109)
Deferred tax assets, net of valuation allowance 303   286
Prepaids and accruals 31   21
Acquired intangibles 32   29
Property and equipment 31   25
Other 10   14
Total deferred tax liabilities 104   89
Deferred tax assets, net of valuation allowance and deferred tax liabilities $ 199   $ 197