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Valuation and Qualifying Accounts (Tables)
 12 Months Ended
Dec. 31, 2012
Valuation and Qualifying Accounts [Abstract]  
Valuation And Qualifying Accounts
The following table presents the valuation and qualifying account activity for the years ended December 31, 2012, 2011 and 2010: 
 
Balance at
January 1
 
Charged to
Earnings
 
Used
 
Adjustments*
 
Balance at
December 31
2012
 
 
 
 
 
 
 
 
 
Allowance for Doubtful Accounts**
$
45

 
$
8

 
$
(4
)
 
$
2

 
$
51

Allowance for Losses on Long-term Receivables**
10

 
—

 
—

 
(10
)
 
—

Inventory Reserves
170

 
67

 
(73
)
 
(1
)
 
163

Customer Reserves
125

 
456

 
(416
)
 
(21
)
 
144

2011
 
 
 
 
 
 
 
 
 
Allowance for Doubtful Accounts
49

 
7

 
(4
)
 
(7
)
 
45

Allowance for Losses on Long-term Receivables
1

 
10

 
(1
)
 
—

 
10

Inventory Reserves
157

 
37

 
(30
)
 
6

 
170

Customer Reserves
117

 
580

 
(565
)
 
(7
)
 
125

2010
 
 
 
 
 
 
 
 
 
Allowance for Doubtful Accounts
16

 
41

 
(2
)
 
(6
)
 
49

Allowance for Losses on Long-term Receivables
7

 
—

 
(6
)
 
—

 
1

Inventory Reserves
140

 
67

 
(34
)
 
(16
)
 
157

Customer Reserves
97

 
427

 
(374
)
 
(33
)
 
117

*Adjustments include translation adjustments
** During 2012, the adjustment of $10 million within Allowance for Losses on Long-term Receivables relates to a reclass from non-current to current.