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Income Taxes - Deferred Tax Assets and Liabilities (Detail) - USD ($)
$ in Millions
Apr. 27, 2018
Apr. 28, 2017
Components of Deferred Tax Assets and Liabilities [Abstract]    
Reserves and accruals $ 57 $ 149
Net operating loss and credit carryforwards 131 104
Stock-based compensation 22 49
Deferred revenue 211 329
Other 29 32
Gross deferred tax assets 450 663
Valuation allowance (109) (94)
Deferred tax assets, net of valuation allowance 341 569
Prepaids and accruals 2 3
Acquired intangibles 29 36
Property and equipment 25 4
Other 16 2
Total deferred tax liabilities 72 45
Deferred tax assets, net of valuation allowance and deferred tax liabilities $ 269 $ 524