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Non-Operating Income (Expense)
 12 Months Ended
Dec. 01, 2017
Other Income and Expenses [Abstract]  
NON-OPERATING INCOME (EXPENSE)
NON-OPERATING INCOME (EXPENSE)
Non-operating income (expense) for fiscal 2017, 2016 and 2015 included the following (in thousands):
 
 
2017
 
2016
 
2015
Interest and other income (expense), net:
 
 
 
 
 
 
Interest income
 
$
66,069

 
$
47,340

 
$
28,759

Foreign exchange gains (losses)
 
(30,705
)
 
(35,716
)
 
(20,130
)
Realized gains on fixed income investment
 
1,673

 
2,880

 
3,309

Realized losses on fixed income investment
 
(725
)
 
(985
)
 
(354
)
Other
 
83

 
29

 
22,325

Interest and other income (expense), net
 
$
36,395

 
$
13,548

 
$
33,909

Interest expense
 
$
(74,402
)
 
$
(70,442
)
 
$
(64,184
)
Investment gains (losses), net:
 
 

 
 
 
 
Realized investment gains
 
$
3,279

 
$
4,964

 
$
2,760

Unrealized investment gains
 
4,274

 
186

 
—

Realized investment losses
 
—

 
(6,720
)
 
(206
)
Unrealized investment losses
 
—

 
—

 
(1,593
)
Investment gains (losses), net
 
$
7,553

 
$
(1,570
)
 
$
961

Non-operating income (expense), net
 
$
(30,454
)
 
$
(58,464
)
 
$
(29,314
)