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FINANCIAL INSTRUMENTS (Tables)
12 Months Ended
Dec. 31, 2012
Financial Instruments [Abstract]  
Investing Results
Investing Results
 
 
 
In millions
2012

2011

2010

Proceeds from sales of available-for-sale securities
$

$
9

$
25

Fair Value of Financial Instruments
Fair Value of Financial Instruments:
 
At December 31, 2012
 
At December 31, 2011
In millions
Cost

Gain

Loss

Fair Value

 
Cost

Gain

Loss

Fair Value

Marketable securities (1):
 
 
 
 
 
 
 
 
 
Debt securities
$
5

$

$

$
5

 
$
3

$

$

$
3

Total marketable securities
$
5

$

$

$
5

 
$
3

$

$

$
3

Long-term debt
$
(471
)
$

$
(116
)
$
(587
)
 
$
(507
)
$

$
(148
)
$
(655
)

(1)
Included in “Other investments” in the consolidated balance sheets.