Fair Value Measurements (Details 1) (Fair Value, Measurements, Recurring, USD $) | Feb. 28, 2014 | Nov. 29, 2013 |
In Thousands, unless otherwise specified |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Foreign Currency Contract, Asset, Fair Value Disclosure | $6,725 | $11,891 |
Other Assets, Fair Value Disclosure | 22,709 | 19,816 |
Assets, Fair Value Disclosure | 2,871,814 | 2,919,238 |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 1,608 | 1,067 |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 1,608 | 1,067 |
Corporate bonds and commercial paper | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 1,350,571 | 1,267,860 |
Money Market Funds | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 388,448 | 429,373 |
Time deposits | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 32,757 | 104,711 |
U.S. agency securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 431,214 | 447,945 |
U.S. Treasury securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 16,999 | 14,251 |
Estimated Fair Value, short-term investments | 426,317 | 424,778 |
Foreign Government Debt Securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 11,247 | 11,269 |
Marketable equity securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 456 | 720 |
Municipal securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 6,000 | ' |
Estimated Fair Value, short-term investments | 178,371 | 186,624 |
Fair Value, Inputs, Level 1 | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Foreign Currency Contract, Asset, Fair Value Disclosure | 0 | 0 |
Other Assets, Fair Value Disclosure | 529 | 894 |
Assets, Fair Value Disclosure | 422,190 | 535,698 |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0 | 0 |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 0 | 0 |
Fair Value, Inputs, Level 1 | Corporate bonds and commercial paper | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 0 | 0 |
Fair Value, Inputs, Level 1 | Money Market Funds | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 388,448 | 429,373 |
Fair Value, Inputs, Level 1 | Time deposits | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 32,757 | 104,711 |
Fair Value, Inputs, Level 1 | U.S. agency securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 0 | 0 |
Fair Value, Inputs, Level 1 | U.S. Treasury securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 0 | 0 |
Estimated Fair Value, short-term investments | 0 | 0 |
Fair Value, Inputs, Level 1 | Foreign Government Debt Securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 0 | 0 |
Fair Value, Inputs, Level 1 | Marketable equity securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 456 | 720 |
Fair Value, Inputs, Level 1 | Municipal securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 0 | ' |
Estimated Fair Value, short-term investments | 0 | 0 |
Fair Value, Inputs, Level 2 | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Foreign Currency Contract, Asset, Fair Value Disclosure | 6,725 | 11,891 |
Other Assets, Fair Value Disclosure | 22,180 | 18,922 |
Assets, Fair Value Disclosure | 2,449,624 | 2,383,540 |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 1,608 | 1,067 |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 1,608 | 1,067 |
Fair Value, Inputs, Level 2 | Corporate bonds and commercial paper | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 1,350,571 | 1,267,860 |
Fair Value, Inputs, Level 2 | Money Market Funds | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 0 | 0 |
Fair Value, Inputs, Level 2 | Time deposits | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 0 | 0 |
Fair Value, Inputs, Level 2 | U.S. agency securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 431,214 | 447,945 |
Fair Value, Inputs, Level 2 | U.S. Treasury securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 16,999 | 14,251 |
Estimated Fair Value, short-term investments | 426,317 | 424,778 |
Fair Value, Inputs, Level 2 | Foreign Government Debt Securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 11,247 | 11,269 |
Fair Value, Inputs, Level 2 | Marketable equity securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 0 | 0 |
Fair Value, Inputs, Level 2 | Municipal securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 6,000 | ' |
Estimated Fair Value, short-term investments | 178,371 | 186,624 |
Fair Value, Inputs, Level 3 | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Foreign Currency Contract, Asset, Fair Value Disclosure | 0 | 0 |
Other Assets, Fair Value Disclosure | 0 | 0 |
Assets, Fair Value Disclosure | 0 | 0 |
Foreign Currency Contracts, Liability, Fair Value Disclosure | 0 | 0 |
Financial and Nonfinancial Liabilities, Fair Value Disclosure | 0 | 0 |
Fair Value, Inputs, Level 3 | Corporate bonds and commercial paper | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 0 | 0 |
Fair Value, Inputs, Level 3 | Money Market Funds | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 0 | 0 |
Fair Value, Inputs, Level 3 | Time deposits | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 0 | 0 |
Fair Value, Inputs, Level 3 | U.S. agency securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 0 | 0 |
Fair Value, Inputs, Level 3 | U.S. Treasury securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 0 | 0 |
Estimated Fair Value, short-term investments | 0 | 0 |
Fair Value, Inputs, Level 3 | Foreign Government Debt Securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 0 | 0 |
Fair Value, Inputs, Level 3 | Marketable equity securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, short-term investments | 0 | 0 |
Fair Value, Inputs, Level 3 | Municipal securities | ' | ' |
Fair Value, Balance Sheet Grouping, Financial Statement Captions | ' | ' |
Estimated Fair Value, cash and cash equivalents | 0 | ' |
Estimated Fair Value, short-term investments | $0 | $0 |