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Income Taxes (Details 1) - USD ($)
$ in Thousands
 12 Months Ended
Nov. 30, 2018
Dec. 01, 2017
Deferred tax assets:    
Acquired technology $ 9,561 $ 4,846
Reserves and accruals 59,100 48,761
Deferred revenue 37,690 23,452
Stock-based compensation 89,240 74,942
Net operating loss carryforwards of acquired companies 209,445 44,465
Credit carryforwards 173,748 124,205
Capitalized expenses 19,074 13,428
Benefits relating to tax positions 51,965 33,318
Other 37,160 30,300
Total gross deferred tax assets 686,983 397,717
Deferred tax assets valuation allowance (174,496) (93,568)
Total deferred tax assets 512,487 304,149
Deferred tax liabilities:    
Depreciation and amortization 40,425 84,064
Undistributed earnings of foreign subsidiaries 17,556 382,744
Acquired intangible assets 501,208 117,282
Total deferred tax liabilities 559,189 584,090
Net deferred tax liabilities 46,702 279,941
Aggregate changes in total gross amount of unrecognized tax benefits [Abstract]    
Beginning balance 172,945 178,413
Gross increases in unrecognized tax benefits - prior year tax positions 16,191 3,680
Gross decreases in unrecognized tax benefits - prior year tax positions (4,000) (30,166)
Gross increases in unrecognized tax benefits - current year tax positions 60,721 24,927
Settlements with taxing authorities 0 (3,876)
Lapse of statute of limitations (45,922) (8,819)
Foreign exchange gains and losses 3,783 (8,786)
Ending balance $ 196,152 $ 172,945