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Non-Operating Income (Expense) (Tables)
 9 Months Ended
Aug. 31, 2018
Other Income and Expenses [Abstract]  
Non-Operating Income (Expense)
Non-operating income (expense) for the three and nine months ended August 31, 2018 and September 1, 2017 included the following (in thousands):
 
Three Months
 
Nine Months
 
2018
 
2017
 
2018
 
2017
Interest and other income (expense), net:
 
 
 
 
 
 
 
Interest income
$
21,561

 
$
17,180

 
$
69,962

 
$
46,553

Foreign exchange gains (losses)
(10,349
)
 
(4,140
)
 
(30,460
)
 
(21,620
)
Realized gains on fixed income investment
63

 
574

 
253

 
1,224

Realized losses on fixed income investment
(9,708
)
 
(86
)
 
(10,094
)
 
(330
)
Other
41

 
11

 
218

 
72

Interest and other income (expense), net
$
1,608

 
$
13,539

 
$
29,879

 
$
25,899

Interest expense
$
(21,107
)
 
$
(18,809
)
 
$
(61,369
)
 
$
(55,286
)
Investment gains (losses), net:
 

 
 
 
 
 
 
Realized investment gains
$
836

 
$
681

 
$
5,333

 
$
3,071

Unrealized investment gains
1,415

 
294

 
993

 
2,190

Investment gains (losses), net
$
2,251

 
$
975

 
$
6,326

 
$
5,261

Non-operating income (expense), net
$
(17,248
)
 
$
(4,295
)
 
$
(25,164
)
 
$
(24,126
)