XML 46 R21.htm IDEA: XBRL DOCUMENT v2.4.0.8
Fair Value of Financial Instruments (Unaudited) (Tables)
 3 Months Ended
Mar. 31, 2014
Fair Value Disclosures [Abstract]  
Fair value information of assets and liabilities measured at fair value on a recurring basis
The following table presents fair value information for those assets and liabilities measured at fair value on a recurring basis:
 
March 31, 2014
 
December 31, 2013
$ in millions
Carrying
Value
 
Fair
Value
 
Carrying
Value
 
Fair
Value
Financial Assets (Liabilities)
 
 
 
 
 
 
 
Marketable securities
 
 
 
 
 
 
 
Trading
$
311

 
$
311

 
$
308

 
$
308

Available-for-sale
2

 
2

 
2

 
2

Derivatives
(3
)
 
(3
)
 
(2
)
 
(2
)
Long-term debt, including current portion
$
(5,929
)
 
$
(6,422
)
 
$
(5,930
)
 
$
(6,227
)