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Schedule II - Valuation and Qualifying Accounts (Tables)
 12 Months Ended
Nov. 04, 2018
SEC Schedule, 12-09, Valuation and Qualifying Accounts [Abstract]  
SEC Schedule, 12-09, Schedule of Valuation and Qualifying Accounts Disclosure [Text Block]
Schedule II — Valuation and Qualifying Accounts
 
 
Balance at
Beginning
of Period
 
Additions to
Allowances
 
Charges
Utilized/
Write-offs
 
Balance at
End of
Period
 
 
 
 
 
 
 
 
 
 
 
(In millions)
Accounts receivable allowances:
 
 
 
 
 
 
 
 
Distributor credit allowances (1)
 
 
 
 
 
 
 
 
Fiscal year ended November 4, 2018
 
$
177

 
$
882

 
$
(908
)
 
$
151

Fiscal year ended October 29, 2017
 
$
252

 
$
1,176

 
$
(1,251
)
 
$
177

Fiscal year ended October 30, 2016
 
$
66

 
$
1,216

 
$
(1,030
)
 
$
252

 
 
 
 
 
 
 
 
 
Other accounts receivable allowances (2)
 
 

 
 

 
 

 
 

Fiscal year ended November 4, 2018
 
$
31

 
$
116

 
$
(135
)
 
$
12

Fiscal year ended October 29, 2017
 
$
40

 
$
49

 
$
(58
)
 
$
31

Fiscal year ended October 30, 2016
 
$
9

 
$
142

 
$
(111
)
 
$
40

 
 
 
 
 
 
 
 
 
Income tax valuation allowances (3)
 
 

 
 

 
 

 
 

Fiscal year ended November 4, 2018
 
$
1,447

 
$
314

 
$
(414
)
 
$
1,347

Fiscal year ended October 29, 2017
 
$
1,003

 
$
460

 
$
(16
)
 
$
1,447

Fiscal year ended October 30, 2016
 
$
147

 
$
882

 
$
(26
)
 
$
1,003


_______________________________________
(1)
Distributor credit allowances relate to price adjustments and other allowances.
(2)
Other accounts receivable allowances primarily include sales returns and allowance for doubtful accounts.
(3)
The decrease in the fiscal year 2018 valuation allowance resulted from restructuring activities offset by increases due to the Brocade Merger and in foreign deferred tax assets arising from foreign credits and losses not expected to be realized. The increase in the fiscal year 2017 valuation allowances resulted from foreign deferred tax assets arising from foreign losses not expected to be realized.