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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
Jan. 27, 2017
USD ($)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets $ 4,639
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 (2) [2]
Cash  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 1,989
Quoted Prices in Active Markets for Identical Assets (Level 1)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 2,259
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) | Cash  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 1,989
Significant Other Observable Inputs (Level 2)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 2,380
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 (2) [2]
Significant Other Observable Inputs (Level 2) | Cash  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 0
Corporate Bonds  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 1,410
Corporate Bonds | Quoted Prices in Active Markets for Identical Assets (Level 1)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 0
Corporate Bonds | Significant Other Observable Inputs (Level 2)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 1,410
U.S. Treasury and Government Debt Securities  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 685
U.S. Treasury and Government Debt Securities | Quoted Prices in Active Markets for Identical Assets (Level 1)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 270
U.S. Treasury and Government Debt Securities | Significant Other Observable Inputs (Level 2)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 415
Foreign Government Debt Securities  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 27
Foreign Government Debt Securities | Quoted Prices in Active Markets for Identical Assets (Level 1)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 0
Foreign Government Debt Securities | Significant Other Observable Inputs (Level 2)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 27
Commercial Paper  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 426
Commercial Paper | Quoted Prices in Active Markets for Identical Assets (Level 1)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 0
Commercial Paper | Significant Other Observable Inputs (Level 2)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 426
Certificates of Deposit  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 102
Certificates of Deposit | Quoted Prices in Active Markets for Identical Assets (Level 1)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 0
Certificates of Deposit | Significant Other Observable Inputs (Level 2)  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 102
Mutual Funds | Other Current Assets  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 7 [1]
Mutual Funds | Other Noncurrent Assets  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 23 [3]
Mutual Funds | 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]  
Assets 7 [1]
Mutual Funds | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Noncurrent Assets  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 23 [3]
Mutual Funds | Significant Other Observable Inputs (Level 2) | Other Current Assets  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets 0 [1]
Mutual Funds | Significant Other Observable Inputs (Level 2) | Other Noncurrent Assets  
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]  
Assets $ 0 [3]
[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