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Inventories, net (Tables)
12 Months Ended
Dec. 31, 2015
Inventory Disclosure [Abstract]  
Summary of Inventories

Inventories consist of (in millions):

 

 

 

December 31,

 

 

 

2015

 

 

2014

 

 

2013

 

Finished goods

 

$

737

 

 

$

988

 

 

$

881

 

Less: inventory reserves

 

 

(44

)

 

 

(39

)

 

 

(31

)

Total

 

$

693

 

 

$

949

 

 

$

850

 

Inventory reserves:

 

 

 

 

 

 

 

 

 

 

 

 

Beginning balance

 

$

39

 

 

$

31

 

 

$

32

 

Additions charged to costs and expenses

 

 

54

 

 

 

8

 

 

 

5

 

Charge-offs and other

 

 

(49

)

 

 

 

 

 

(6

)

Ending balance

 

$

44

 

 

$

39

 

 

$

31