| 
           Fair Value (Detail) (USD $) In Millions, unless otherwise specified 
         | 
        12 Months Ended | 
      
      
        | 
           Dec. 28, 2013 
         | 
        
           Dec. 29, 2012 
         | 
        
           Dec. 31, 2011 
         | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Loans Receivable, Fair Value Disclosure | 
        $ 805
 | 
        $ 780
 | 
         
 | 
      
      
        | Non-Marketable Cost Method Investments | 
        1,270
 | 
        1,202
 | 
         
 | 
      
      
        | Loans receivable | 
        1,072
 | 
        979
 | 
         
 | 
      
      
        | Reverse repurchase agreements | 
        800
 | 
        2,850
 | 
         
 | 
      
      
        | 
           NVIDIA cross-license agreement [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Notes Payable | 
        587
 | 
         
 | 
         
 | 
      
      
        | 
           Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Assets, Fair Value Disclosure, Recurring | 
        28,125
 | 
        23,525
 | 
         
 | 
      
      
        | Liabilities, Fair Value Disclosure | 
        422
 | 
        312
 | 
         
 | 
      
      
        | 
           Fair Value, Measurements, Nonrecurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Non-Marketable Equity Investments, Gains (Losses) | 
        (106)
 | 
        (68)
 | 
        (62)
 | 
      
      
        | 
           Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Reverse Repurchase Agreements, Fair Value Disclosure | 
        400
 | 
        2,800
 | 
         
 | 
      
      
        | 
           Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Assets, Fair Value Disclosure | 
        357
 | 
        221
 | 
         
 | 
      
      
        | Loans Receivable, Fair Value Disclosure | 
        103
 | 
        203
 | 
         
 | 
      
      
        | 
           Other Long-Term Assets [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Assets, Fair Value Disclosure | 
        36
 | 
        38
 | 
         
 | 
      
      
        | Loans Receivable, Fair Value Disclosure | 
        702
 | 
        577
 | 
         
 | 
      
      
        | 
           Other Accrued Liabilities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Financial Instruments, Liabilities, Fair Value Disclosure | 
        372
 | 
        292
 | 
         
 | 
      
      
        | 
           Other Long-Term Liabilities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Financial Instruments, Liabilities, Fair Value Disclosure | 
        50
 | 
        20
 | 
         
 | 
      
      
        | 
           Carrying Amount [Member] | Not Recorded At Fair Value On Recurring Basis [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Non-Marketable Cost Method Investments | 
        1,270
 | 
        1,202
 | 
         
 | 
      
      
        | Loans receivable | 
        267
 | 
        199
 | 
         
 | 
      
      
        | Reverse repurchase agreements | 
        400
 | 
        50
 | 
         
 | 
      
      
        | Grants Receivable | 
        416
 | 
        198
 | 
         
 | 
      
      
        | Long-term debt | 
        13,165
 | 
        13,136
 | 
         
 | 
      
      
        | Short-term Debt | 
        24
 | 
        48
 | 
         
 | 
      
      
        | 
           Carrying Amount [Member] | Not Recorded At Fair Value On Recurring Basis [Member] | NVIDIA cross-license agreement [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Notes Payable | 
        587
 | 
        875
 | 
         
 | 
      
      
        | 
           Fair Value [Member] | Not Recorded At Fair Value On Recurring Basis [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Non-Marketable Cost Method Investments, Fair Value Disclosure | 
        2,105
 | 
        1,766
 | 
         
 | 
      
      
        | Loans receivable | 
        267
 | 
        198
 | 
         
 | 
      
      
        | Reverse repurchase agreements | 
        400
 | 
        50
 | 
         
 | 
      
      
        | Grants Receivable, Fair Value Disclosure | 
        481
 | 
        205
 | 
         
 | 
      
      
        | Long-term debt | 
        13,538
 | 
        14,368
 | 
         
 | 
      
      
        | Short-term Debt, Fair Value | 
        24
 | 
        48
 | 
         
 | 
      
      
        | 
           Fair Value [Member] | Not Recorded At Fair Value On Recurring Basis [Member] | NVIDIA cross-license agreement [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Notes Payable, Fair Value Disclosure | 
        597
 | 
        890
 | 
         
 | 
      
      
        | 
           Bank Deposits [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        92
 | 
        247
 | 
         
 | 
      
      
        | 
           Bank Deposits [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        1,017
 | 
        822
 | 
         
 | 
      
      
        | 
           Bank Deposits [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        1,782
 | 
        540
 | 
         
 | 
      
      
        | 
           Bank Deposits [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        157
 | 
        56
 | 
         
 | 
      
      
        | 
           Commercial Paper [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        240
 | 
        336
 | 
         
 | 
      
      
        | 
           Commercial Paper [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        2,341
 | 
        2,711
 | 
         
 | 
      
      
        | 
           Commercial Paper [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        2,123
 | 
        1,474
 | 
         
 | 
      
      
        | 
           Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        3,398
 | 
        1,591
 | 
         
 | 
      
      
        | 
           Corporate Bonds [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        21
 | 
        0
 | 
         
 | 
      
      
        | 
           Corporate Bonds [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        1,523
 | 
        388
 | 
         
 | 
      
      
        | 
           Corporate Bonds [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        827
 | 
        254
 | 
         
 | 
      
      
        | 
           Government Bonds [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        3,885
 | 
        3,222
 | 
         
 | 
      
      
        | 
           Government Bonds [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        466
 | 
         
 | 
      
      
        | 
           Government Bonds [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        544
 | 
        1,597
 | 
         
 | 
      
      
        | 
           Government Bonds [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        480
 | 
        172
 | 
         
 | 
      
      
        | 
           Money Market Fund Deposits [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        82
 | 
        18
 | 
         
 | 
      
      
        | 
           Money Market Fund Deposits [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        1,041
 | 
        1,086
 | 
         
 | 
      
      
        | 
           Municipal Bonds [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        56
 | 
        203
 | 
         
 | 
      
      
        | 
           Marketable Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        6,221
 | 
        4,424
 | 
         
 | 
      
      
        | 
           Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        688
 | 
        68
 | 
         
 | 
      
      
        | 
           Asset-Backed Securities [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        9
 | 
        11
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Assets, Fair Value Disclosure, Recurring | 
        13,512
 | 
        9,616
 | 
         
 | 
      
      
        | Liabilities, Fair Value Disclosure | 
        0
 | 
        1
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Reverse Repurchase Agreements, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Assets, Fair Value Disclosure | 
        48
 | 
        12
 | 
         
 | 
      
      
        | Loans Receivable, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Other Long-Term Assets [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Assets, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | Loans Receivable, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Other Accrued Liabilities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Financial Instruments, Liabilities, Fair Value Disclosure | 
        0
 | 
        1
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Other Long-Term Liabilities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Financial Instruments, Liabilities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Fair Value [Member] | Not Recorded At Fair Value On Recurring Basis [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Non-Marketable Cost Method Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | Loans receivable | 
        0
 | 
        0
 | 
         
 | 
      
      
        | Reverse repurchase agreements | 
        0
 | 
        0
 | 
         
 | 
      
      
        | Grants Receivable, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | Long-term debt | 
        10,937
 | 
        11,442
 | 
         
 | 
      
      
        | Short-term Debt, Fair Value | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Fair Value [Member] | Not Recorded At Fair Value On Recurring Basis [Member] | NVIDIA cross-license agreement [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Notes Payable, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Bank Deposits [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Bank Deposits [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Bank Deposits [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Bank Deposits [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Commercial Paper [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Commercial Paper [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Commercial Paper [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        2,625
 | 
        482
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Corporate Bonds [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Corporate Bonds [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        383
 | 
        75
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Corporate Bonds [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        282
 | 
        10
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Government Bonds [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        2,267
 | 
        1,743
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Government Bonds [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        400
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Government Bonds [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        268
 | 
        1,307
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Government Bonds [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        295
 | 
        59
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Money Market Fund Deposits [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        82
 | 
        18
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Money Market Fund Deposits [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        1,041
 | 
        1,086
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Municipal Bonds [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Marketable Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        6,221
 | 
        4,424
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 1 [Member] | Asset-Backed Securities [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Assets, Fair Value Disclosure, Recurring | 
        14,525
 | 
        13,764
 | 
         
 | 
      
      
        | Liabilities, Fair Value Disclosure | 
        422
 | 
        311
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Reverse Repurchase Agreements, Fair Value Disclosure | 
        400
 | 
        2,800
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Assets, Fair Value Disclosure | 
        309
 | 
        208
 | 
         
 | 
      
      
        | Loans Receivable, Fair Value Disclosure | 
        103
 | 
        203
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Other Long-Term Assets [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Assets, Fair Value Disclosure | 
        7
 | 
        20
 | 
         
 | 
      
      
        | Loans Receivable, Fair Value Disclosure | 
        702
 | 
        577
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Other Accrued Liabilities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Financial Instruments, Liabilities, Fair Value Disclosure | 
        372
 | 
        291
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Other Long-Term Liabilities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Financial Instruments, Liabilities, Fair Value Disclosure | 
        50
 | 
        20
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Fair Value [Member] | Not Recorded At Fair Value On Recurring Basis [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Non-Marketable Cost Method Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | Loans receivable | 
        250
 | 
        150
 | 
         
 | 
      
      
        | Reverse repurchase agreements | 
        400
 | 
        50
 | 
         
 | 
      
      
        | Grants Receivable, Fair Value Disclosure | 
        481
 | 
        205
 | 
         
 | 
      
      
        | Long-term debt | 
        2,601
 | 
        2,926
 | 
         
 | 
      
      
        | Short-term Debt, Fair Value | 
        24
 | 
        48
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Fair Value [Member] | Not Recorded At Fair Value On Recurring Basis [Member] | NVIDIA cross-license agreement [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Notes Payable, Fair Value Disclosure | 
        597
 | 
        890
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Bank Deposits [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        92
 | 
        247
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Bank Deposits [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        1,017
 | 
        822
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Bank Deposits [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        1,782
 | 
        540
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Bank Deposits [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        157
 | 
        56
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Commercial Paper [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        240
 | 
        336
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Commercial Paper [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        2,341
 | 
        2,711
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Commercial Paper [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        2,123
 | 
        1,474
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        773
 | 
        1,109
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Corporate Bonds [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        21
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Corporate Bonds [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        1,121
 | 
        292
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Corporate Bonds [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        518
 | 
        218
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Government Bonds [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        1,618
 | 
        1,479
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Government Bonds [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        66
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Government Bonds [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        276
 | 
        290
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Government Bonds [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        185
 | 
        113
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Money Market Fund Deposits [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Money Market Fund Deposits [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Municipal Bonds [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        56
 | 
        203
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Marketable Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        684
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 2 [Member] | Asset-Backed Securities [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Assets, Fair Value Disclosure, Recurring | 
        88
 | 
        145
 | 
         
 | 
      
      
        | Liabilities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Fair Value, Measurements, Nonrecurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Non-Marketable Equity Investments | 
        47
 | 
        73
 | 
        69
 | 
      
      
        | 
           Level 3 [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Reverse Repurchase Agreements, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Other Current Assets [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Assets, Fair Value Disclosure | 
        0
 | 
        1
 | 
         
 | 
      
      
        | Loans Receivable, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Other Long-Term Assets [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Assets, Fair Value Disclosure | 
        29
 | 
        18
 | 
         
 | 
      
      
        | Loans Receivable, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Other Accrued Liabilities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Financial Instruments, Liabilities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Other Long-Term Liabilities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Derivative Financial Instruments, Liabilities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Fair Value [Member] | Not Recorded At Fair Value On Recurring Basis [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Non-Marketable Cost Method Investments, Fair Value Disclosure | 
        2,105
 | 
        1,766
 | 
         
 | 
      
      
        | Loans receivable | 
        17
 | 
        48
 | 
         
 | 
      
      
        | Reverse repurchase agreements | 
        0
 | 
        0
 | 
         
 | 
      
      
        | Grants Receivable, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | Long-term debt | 
        0
 | 
        0
 | 
         
 | 
      
      
        | Short-term Debt, Fair Value | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Fair Value [Member] | Not Recorded At Fair Value On Recurring Basis [Member] | NVIDIA cross-license agreement [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Notes Payable, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Bank Deposits [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Bank Deposits [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Bank Deposits [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Bank Deposits [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Commercial Paper [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Commercial Paper [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Commercial Paper [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Corporate Bonds [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Corporate Bonds [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Corporate Bonds [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        19
 | 
        21
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Corporate Bonds [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        27
 | 
        26
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Government Bonds [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Government Bonds [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Government Bonds [Member] | Short-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Government Bonds [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Money Market Fund Deposits [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Money Market Fund Deposits [Member] | Cash Equivalents [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Municipal Bonds [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Marketable Equity Securities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        0
 | 
        0
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Asset-Backed Securities [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Trading Securities, Fair Value Disclosure | 
        4
 | 
        68
 | 
         
 | 
      
      
        | 
           Level 3 [Member] | Asset-Backed Securities [Member] | Other Long-Term Investments [Member] | Fair Value, Measurements, Recurring [Member] 
         | 
         
 | 
         
 | 
         
 | 
      
      
        | Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] | 
         
 | 
         
 | 
         
 | 
      
      
        | Investments, Fair Value Disclosure | 
        $ 9
 | 
        $ 11
 | 
         
 |