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WARRANTY LIABILITY (Tables)
 9 Months Ended
Oct. 28, 2016
Product Warranties Disclosures [Abstract]  
Changes in the Company's liabilities for standard limited warranties
Changes in the Company's liabilities for standard limited warranties are presented in the following table for the periods indicated.
 
Three Months Ended
 
Nine Months Ended
 
October 28, 2016
 
October 30, 2015
 
October 28, 2016
 
October 30, 2015
 
(in millions)
Warranty liability:
 
 
 
 
 
 
 
Warranty liability at beginning of period
$
565

 
$
653

 
$
574

 
$
679

Warranty liability assumed through EMC merger transaction
125

 
—

 
125

 
—

Costs accrued for new warranty contracts and changes in estimates for pre-existing warranties (a) (b)
196

 
189

 
578

 
592

Service obligations honored
(248
)
 
(226
)
 
(639
)
 
(655
)
Warranty liability at end of period
$
638

 
$
616

 
$
638

 
$
616

Current portion
$
425

 
$
408

 
$
425

 
$
408

Non-current portion
$
213

 
$
208

 
$
213

 
$
208

____________________
(a)
Changes in cost estimates related to pre-existing warranties are aggregated with accruals for new standard warranty contracts. The Company's warranty liability process does not differentiate between estimates made for pre-existing warranties and new warranty obligations.
(b)
Includes the impact of foreign currency exchange rate fluctuations.