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Supplemental Financial Information - Other Long-term Liabilities (Detail) - USD ($)
$ in Millions
Apr. 26, 2019
Apr. 27, 2018
Liabilities Other Than Long Term Debt Noncurrent [Abstract]    
Liability for uncertain tax positions $ 252 $ 314
Income taxes payable 447 549
Product warranty liabilities 15 15
Other liabilities 83 114
Other long-term liabilities $ 797 $ 992