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Stockholders' Equity (Tables)
 12 Months Ended
Nov. 30, 2018
Equity [Abstract]  
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]
:
 
December 1,
2017
 
Increase / Decrease
 
Reclassification Adjustments
 
November 30,
2018
Net unrealized gains / losses on available-for-sale securities:
 
 
 
 
 
 
 
Unrealized gains on available-for-sale securities
$
2,704

 
$
(2,005
)
 
$
(655
)
 
$
44

Unrealized losses on available-for-sale securities
(14,220
)
 
(22,459
)
 
11,305

 
(25,374
)
Total net unrealized gains / losses on available-for-sale securities
(11,516
)
 
(24,464
)
 
10,650

(1 
) 
(25,330
)
Net unrealized gains / losses on derivative instruments designated as hedging instruments
(3,367
)
 
74,080

 
(48,981
)
(2 
) 
21,732

Cumulative foreign currency translation adjustments
(96,938
)
 
(47,594
)
 
—

 
(144,532
)
Total accumulated other comprehensive income (loss), net of taxes
$
(111,821
)
 
$
2,022

 
$
(38,331
)
 
$
(148,130
)
_________________________________________ 
(1) 
Reclassification adjustments for gains / losses on available-for-sale securities are classified in interest and other income (expense), net.
(2) 
Reclassification adjustments for gains / losses on other derivative instruments are classified in revenue.
Other Comprehensive Income, Tax [Table Text Block]
The following table sets forth the taxes related to each component of other comprehensive income for fiscal 2018, 2017 and 2016 (in thousands):
 
 
2018
 
2017
 
2016
Available-for-sale securities:
 
 
 
 
 
 
Unrealized gains / losses
 
$
—

 
$
663

 
$
(299
)
Reclassification adjustments
 
—

 
(491
)
 
108

Subtotal available-for-sale securities
 
—

 
172

 
(191
)
Derivatives designated as hedging instruments:
 
 
 
 
 
 
Reclassification adjustments
 
(1,946
)
 
(732
)
 
(552
)
Subtotal derivatives designated as hedging instruments
 
(1,946
)
 
(732
)
 
(552
)
Foreign currency translation adjustments
 
(1,742
)
 
3,005

 
24

Total taxes, other comprehensive income (loss)
 
$
(3,688
)
 
$
2,445

 
$
(719
)