Quarterly report pursuant to Section 13 or 15(d)

Assets And Liabilities Measured At Fair Value

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Assets And Liabilities Measured At Fair Value
 6 Months Ended
Jun. 30, 2012
Assets And Liabilities Measured At Fair Value  
Assets And Liabilities Measured At Fair Value
Assets and Liabilities Measured at Fair Value
For assets and liabilities required to be reported at fair value, GAAP provides a hierarchy that prioritizes inputs to valuation techniques used to measure fair value into three broad levels. Level 1 inputs are quoted market prices in active markets for identical assets or liabilities that the reporting entity has the ability to access at the measurement date. Level 2 inputs are inputs, other than quoted market prices included within Level 1, that are observable for the asset or liability, either directly or indirectly. Level 3 inputs are unobservable inputs for the asset or liability.
The Company's assets and liabilities measured at fair value are as follows:
 
 
 
Fair Value Measurements at June 30, 2012
Description
Total
 
Quoted prices
in active markets
for identical assets
(Level 1)
 
Significant other
observable
inputs
(Level 2)
 
Significant
unobservable
inputs
(Level 3)
 
 
 
amounts in millions
Cash equivalents
$
581

 
581

 
—

 
—

Available-for-sale securities
$
1,380

 
1,380

 
—

 
—

Financial instruments, net
$
208

 
165

 
43

 
—

Debt
$
2,548

 
—

 
2,548

 
—


The majority of the Company's Level 2 financial assets and liabilities are debt instruments with quoted market prices that are not considered to be traded on "active markets," as defined in GAAP. Accordingly, the financial instruments are reported in the foregoing table as Level 2 fair value.
Realized and Unrealized Gains (Losses) on Financial Instruments
Realized and unrealized gains (losses) on financial instruments are comprised of changes in the fair value of the following:
 
Three months ended
June 30,
 
Six months ended
June 30,
 
2012
 
2011
 
2012
 
2011
 
amounts in millions
Non-strategic Securities
$
41

 
52

 
181

 
149

Exchangeable senior debentures
(35
)
 
22

 
(217
)
 
(165
)
Other derivatives
(166
)
 
15

 
(142
)
 
46

 
$
(160
)
 
89

 
(178
)
 
30