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Financial Instruments and Fair Value Measurements - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Detail)
$ in Millions
Jul. 28, 2017
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets $ 5,321
Other Current Assets  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Foreign currency exchange contracts assets 2 [1]
Accrued Expenses  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Foreign currency exchange contracts liabilities (4) [2]
Corporate Bonds  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 1,607
U.S. Treasury and Government Debt Securities  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 555
Foreign Government Debt Securities  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 21
Commercial Paper  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 409
Certificates of Deposit  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 99
Mutual Funds | Other Current Assets  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 6 [1]
Mutual Funds | Other Noncurrent Assets  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 26 [3]
Quoted Prices in Active Markets for Identical Assets (Level 1)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 2,846
Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Current Assets  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Foreign currency exchange contracts assets 0 [1]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Accrued Expenses  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Foreign currency exchange contracts liabilities 0 [2]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate Bonds  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury and Government Debt Securities  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 216
Quoted Prices in Active Markets for Identical Assets (Level 1) | Foreign Government Debt Securities  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Commercial Paper  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Certificates of Deposit  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mutual Funds | Other Current Assets  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 6 [1]
Quoted Prices in Active Markets for Identical Assets (Level 1) | Mutual Funds | Other Noncurrent Assets  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 26 [3]
Significant Other Observable Inputs (Level 2)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 2,475
Significant Other Observable Inputs (Level 2) | Other Current Assets  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Foreign currency exchange contracts assets 2 [1]
Significant Other Observable Inputs (Level 2) | Accrued Expenses  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Foreign currency exchange contracts liabilities (4) [2]
Significant Other Observable Inputs (Level 2) | Corporate Bonds  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 1,607
Significant Other Observable Inputs (Level 2) | U.S. Treasury and Government Debt Securities  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 339
Significant Other Observable Inputs (Level 2) | Foreign Government Debt Securities  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 21
Significant Other Observable Inputs (Level 2) | Commercial Paper  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 409
Significant Other Observable Inputs (Level 2) | Certificates of Deposit  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 99
Significant Other Observable Inputs (Level 2) | Mutual Funds | Other Current Assets  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 0 [1]
Significant Other Observable Inputs (Level 2) | Mutual Funds | Other Noncurrent Assets  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 0 [3]
Cash  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 2,630
Cash | Quoted Prices in Active Markets for Identical Assets (Level 1)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 2,630
Cash | Significant Other Observable Inputs (Level 2)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets $ 0
[1] Reported as other current assets in the condensed consolidated balance sheets
[2] Reported as accrued expenses in the condensed consolidated balance sheets
[3] Reported as other non-current assets in the condensed consolidated balance sheets