Fair Value Measurements (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	6 Months Ended
	May 31, 2013	May 31, 2013	May 31, 2013 Fair Value, Measurements, Recurring [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Corporate bonds and commercial paper [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Corporate bonds and commercial paper [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Money Market Funds [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Money Market Mutual Funds and Repurchase Agreements [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Foreign government securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Foreign government securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Marketable equity securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Marketable equity securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Municipal securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Municipal securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Time deposits [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Time deposits [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] U.S. agency securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] U.S. agency securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] U.S. Treasury securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] U.S. Treasury securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1)	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1)	May 31, 2013 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Corporate bonds and commercial paper [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Corporate bonds and commercial paper [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Money Market Funds [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Money Market Mutual Funds and Repurchase Agreements [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Foreign government securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Foreign government securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Marketable equity securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Marketable equity securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Municipal securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Municipal securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Time deposits [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) Time deposits [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) U.S. agency securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) U.S. agency securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) U.S. Treasury securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Quoted Prices in Active Markets for Identical Assets (Level 1) U.S. Treasury securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2)	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2)	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) Corporate bonds and commercial paper [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) Corporate bonds and commercial paper [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) Money Market Funds [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) Money Market Mutual Funds and Repurchase Agreements [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) Foreign government securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) Foreign government securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) Marketable equity securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) Marketable equity securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) Municipal securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) Municipal securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) Time deposits [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) Time deposits [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) U.S. agency securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) U.S. agency securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) U.S. Treasury securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Other Observable Inputs (Level 2) U.S. Treasury securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3)	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3)	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) Corporate bonds and commercial paper [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) Corporate bonds and commercial paper [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) Money Market Funds [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) Money Market Mutual Funds and Repurchase Agreements [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) Foreign government securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) Foreign government securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) Marketable equity securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) Marketable equity securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) Municipal securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) Municipal securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) Time deposits [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) Time deposits [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) U.S. agency securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) U.S. agency securities [Member]	May 31, 2013 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) U.S. Treasury securities [Member]	Nov. 30, 2012 Fair Value, Measurements, Recurring [Member] Significant Unobservable Inputs (Level 3) U.S. Treasury securities [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value, Assets, Level 1 to Level 2 Transfers, Amount	$ 0	$ 0
Fair Value, Assets, Level 2 to Level 1 Transfers, Amount	0	0
Fair Value, Liabilities, Level 1 to Level 2 Transfers, Amount	0	0
Fair Value, Liabilities, Level 2 to Level 1 Transfers, Amount	0	0
Assets:
Cash equivalents					23,991	3,998	761,427	1,171,270						3,895	138,554	45,118							0	0	761,427	1,171,270						0	138,554	45,118							23,991	3,998	0	0						3,895	0	0							0	0	0	0						0	0	0
Short-term investments					1,412,466	1,070,440			14,898	6,952	339	244	194,674	180,525		20,113	535,816	504,191	461,105	330,836			0	0			0	0	339	244	0	0		0	0	0	0	0			1,412,466	1,070,440			14,898	6,952	0	0	194,674	180,525		20,113	535,816	504,191	461,105	330,836			0	0			0	0	0	0	0	0		0	0	0	0	0
Foreign currency derivatives			23,781	13,513																	0	0																	23,781	13,513																	0	0
Deferred compensation plan assets			18,450	15,094																	399	436																	18,051	14,658																	0	0
Total assets			3,585,501	3,366,189																	900,719	1,217,068																	2,684,782	2,149,121																	0	0
Liabilities:
Foreign currency derivatives			2,498	998																	0	0																	2,498	998																	0	0
Total liabilities			2,498	998																	0	0																	2,498	998																	0	0
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	$ 5,000	$ 5,000