Fair Value Measurements (Details 1) (Fair Value, Measurements, Recurring, USD $) In Thousands, unless otherwise specified	Feb. 28, 2014	Nov. 29, 2013
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