Stockholders' Equity (Details 1) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 01, 2013
Gross unrealized gains, available-for-sale securities [Abstract]
Beginning balance, unrealized gains on available-for-sale securities	$ 14,699
Gross unrealized gains on available for sale securities, increase or decrease	659
Gross unrealized gains on available for sale securities, reclassification adjustments	(1,599)
Ending balance, unrealized gains on available-for-sale securities	13,759
Gross unrealized losses, available-for-sale securities [Abstract]
Beginning balance, unrealized losses on available-for-sale securities	260
Gross unrealized losses on available for sale securities, increase or decrease	43
Gross unrealized losses on available for sale securities, reclassification adjustments	15
Ending balance, unrealized losses on available-for-sale securities	202
Net unrealized gains on available-for-sale securities [Abstract]
Beginning Balance, net unrealized gains on available-for-sale securities	14,439
Net unrealized gains on available for sale securities, increase or decrease	702
Net unrealized gains on available for sale securities, reclassification adjustments	(1,584)	[1]
Ending Balance, net unrealized gains on available-for-sale securities	13,557
Net unrealized gains on derivatives designated as hedging instuments [Abstract]
Beginning balance, net unrealized gains on derivative instruments designated as hedging instruments	6,604
Net unrealized gains on derivative instruments designated as hedging instruments, increase or decrease	21,776
Net unrealized gains on derivative instruments designated as hedging instruments, reclassification adjustments	(7,094)	[2]
Ending balance, net unrealized gains on derivative instruments designated as hedging instruments	21,286
Cumulative foreign currency translation adjustments [Abstract]
Beginning balance, cumulative foreign currency translation adjustments	9,669
Cumulative foreign currency translation adjustment, increase or decrease	(4,402)
Cumulative foreign currency translation adjustment, reclassification adjustments	0
Ending balance, cumulative foreign currency translation adjustments	5,267
Accumulated other comprehensive income totals [Abstract]
Beginning balance, total accumulated other comprehensive income, net of taxes	30,712	[3]
Accumulated other comprehensive income, increase or decrease	18,076
Accumulated other comprehensive income, reclassification adjustments	(8,678)
Ending balance, total accumulated other comprehensive income, net of taxes	$ 40,110

[1] Classified in interest and other income (expense), net.

[2] Classified as revenue.

[3] The Condensed Consolidated Balance Sheet as of November 30, 2012 has been derived from the audited consolidated financial statements at that date but does not include all of the information and footnotes required by generally accepted accounting principles for complete financial statements.