Financial Instruments (Details) (Fair Value Measurements) (USD $) | Sep. 28, 2013 | Dec. 29, 2012 |
In Millions, unless otherwise specified |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | $175 | $477 |
Current marketable securities, at fair value | 517 | 453 |
Noncurrent marketable securities, at fair value | 121 | 181 |
Other assets, at fair value | 31 | 24 |
Total assets, at fair alue | 844 | 1,135 |
Foreign currency derivative contracts, liability, at fair value | -1 | |
Total liabilities, at fair value | -1 | |
Money Market Funds | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | 0 | 402 |
Noncurrent marketable securities, at fair value | 0 | 13 |
Other assets, at fair value | 18 | 10 |
Commercial Paper | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | 150 | 75 |
Current marketable securities, at fair value | 452 | 324 |
Time Deposits | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | 25 | 0 |
Current marketable securities, at fair value | 50 | 100 |
Auction Rate Securities | | |
Financial Instruments, At Fair Value [Line Items] | | |
Current marketable securities, at fair value | 15 | 28 |
Marketable Equity Securities | | |
Financial Instruments, At Fair Value [Line Items] | | |
Current marketable securities, at fair value | 0 | 1 |
Corporate Bonds | | |
Financial Instruments, At Fair Value [Line Items] | | |
Noncurrent marketable securities, at fair value | 121 | 168 |
Mutual Funds | | |
Financial Instruments, At Fair Value [Line Items] | | |
Other assets, at fair value | 13 | 14 |
Quoted Prices In Active Markets For Identical Assets (Level 1) | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | 0 | 402 |
Current marketable securities, at fair value | 0 | 1 |
Noncurrent marketable securities, at fair value | 0 | 13 |
Other assets, at fair value | 31 | 24 |
Total assets, at fair alue | 31 | 440 |
Foreign currency derivative contracts, liability, at fair value | 0 | |
Total liabilities, at fair value | 0 | |
Quoted Prices In Active Markets For Identical Assets (Level 1) | Money Market Funds | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | | 402 |
Noncurrent marketable securities, at fair value | | 13 |
Other assets, at fair value | 18 | 10 |
Quoted Prices In Active Markets For Identical Assets (Level 1) | Commercial Paper | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | 0 | 0 |
Current marketable securities, at fair value | 0 | 0 |
Quoted Prices In Active Markets For Identical Assets (Level 1) | Time Deposits | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | 0 | |
Current marketable securities, at fair value | 0 | 0 |
Quoted Prices In Active Markets For Identical Assets (Level 1) | Auction Rate Securities | | |
Financial Instruments, At Fair Value [Line Items] | | |
Current marketable securities, at fair value | 0 | 0 |
Quoted Prices In Active Markets For Identical Assets (Level 1) | Marketable Equity Securities | | |
Financial Instruments, At Fair Value [Line Items] | | |
Current marketable securities, at fair value | | 1 |
Quoted Prices In Active Markets For Identical Assets (Level 1) | Corporate Bonds | | |
Financial Instruments, At Fair Value [Line Items] | | |
Noncurrent marketable securities, at fair value | 0 | 0 |
Quoted Prices In Active Markets For Identical Assets (Level 1) | Mutual Funds | | |
Financial Instruments, At Fair Value [Line Items] | | |
Other assets, at fair value | 13 | 14 |
Significant Other Observable Inputs (Level 2) | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | 175 | 75 |
Current marketable securities, at fair value | 502 | 424 |
Noncurrent marketable securities, at fair value | 121 | 168 |
Other assets, at fair value | 0 | 0 |
Total assets, at fair alue | 798 | 667 |
Foreign currency derivative contracts, liability, at fair value | -1 | |
Total liabilities, at fair value | -1 | |
Significant Other Observable Inputs (Level 2) | Money Market Funds | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | | 0 |
Noncurrent marketable securities, at fair value | | 0 |
Other assets, at fair value | 0 | 0 |
Significant Other Observable Inputs (Level 2) | Commercial Paper | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | 150 | 75 |
Current marketable securities, at fair value | 452 | 324 |
Significant Other Observable Inputs (Level 2) | Time Deposits | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | 25 | |
Current marketable securities, at fair value | 50 | 100 |
Significant Other Observable Inputs (Level 2) | Auction Rate Securities | | |
Financial Instruments, At Fair Value [Line Items] | | |
Current marketable securities, at fair value | 0 | 0 |
Significant Other Observable Inputs (Level 2) | Marketable Equity Securities | | |
Financial Instruments, At Fair Value [Line Items] | | |
Current marketable securities, at fair value | | 0 |
Significant Other Observable Inputs (Level 2) | Corporate Bonds | | |
Financial Instruments, At Fair Value [Line Items] | | |
Noncurrent marketable securities, at fair value | 121 | 168 |
Significant Other Observable Inputs (Level 2) | Mutual Funds | | |
Financial Instruments, At Fair Value [Line Items] | | |
Other assets, at fair value | 0 | 0 |
Significant Unobservable Inputs (Level 3) | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | 0 | 0 |
Current marketable securities, at fair value | 15 | 28 |
Noncurrent marketable securities, at fair value | 0 | 0 |
Other assets, at fair value | 0 | 0 |
Total assets, at fair alue | 15 | 28 |
Foreign currency derivative contracts, liability, at fair value | 0 | |
Total liabilities, at fair value | 0 | |
Significant Unobservable Inputs (Level 3) | Money Market Funds | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | | 0 |
Noncurrent marketable securities, at fair value | | 0 |
Other assets, at fair value | 0 | 0 |
Significant Unobservable Inputs (Level 3) | Commercial Paper | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | 0 | 0 |
Current marketable securities, at fair value | 0 | 0 |
Significant Unobservable Inputs (Level 3) | Time Deposits | | |
Financial Instruments, At Fair Value [Line Items] | | |
Cash equivalents, at fair value | 0 | |
Current marketable securities, at fair value | 0 | 0 |
Significant Unobservable Inputs (Level 3) | Auction Rate Securities | | |
Financial Instruments, At Fair Value [Line Items] | | |
Current marketable securities, at fair value | 15 | 28 |
Significant Unobservable Inputs (Level 3) | Marketable Equity Securities | | |
Financial Instruments, At Fair Value [Line Items] | | |
Current marketable securities, at fair value | | 0 |
Significant Unobservable Inputs (Level 3) | Corporate Bonds | | |
Financial Instruments, At Fair Value [Line Items] | | |
Noncurrent marketable securities, at fair value | 0 | 0 |
Significant Unobservable Inputs (Level 3) | Mutual Funds | | |
Financial Instruments, At Fair Value [Line Items] | | |
Other assets, at fair value | $0 | $0 |