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Income Taxes (Details 1) - USD ($)
$ in Thousands
12 Months Ended
Nov. 29, 2019
Nov. 30, 2018
Deferred tax assets:    
Acquired technology $ 4,568 $ 9,561
Reserves and accruals 53,796 59,100
Deferred revenue 12,036 37,690
Stock-based compensation 106,911 89,240
Net operating loss carryforwards of acquired companies 137,151 209,445
Credit carryforwards 252,074 173,748
Capitalized expenses 44,912 19,074
Benefits relating to tax positions 47,458 51,965
Other 32,794 37,160
Total gross deferred tax assets 691,700 686,983
Deferred tax assets valuation allowance (244,432) (174,496)
Total deferred tax assets 447,268 512,487
Deferred tax liabilities:    
Depreciation and amortization 36,458 40,425
Undistributed earnings of foreign subsidiaries 51,883 17,556
Prepaid expenses 86,279 0
Acquired intangible assets 413,146 501,208
Total deferred tax liabilities 587,766 559,189
Net deferred tax liabilities 140,498 46,702
Aggregate changes in total gross amount of unrecognized tax benefits [Abstract]    
Beginning balance 196,152 172,945
Gross increases in unrecognized tax benefits - prior year tax positions 14,850 16,191
Gross decreases in unrecognized tax benefits - prior year tax positions (2,282) (4,000)
Gross increases in unrecognized tax benefits - current year tax positions 18,526 60,721
Gross decreases in unrecognized tax benefits - current year tax positions (2,879) 0
Settlements with taxing authorities (230) 0
Lapse of statute of limitations (49,813) (45,922)
Foreign exchange gains and losses 987 3,783
Ending balance $ 173,337 $ 196,152