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Unaudited Quarterly Financial Data (Tables)
 12 Months Ended
Dec. 31, 2011
Quarterly Financial Information Disclosure [Abstract]  
Unaudited Quarterly Financial Data
 
 
Three Months Ended
 
 
March 31,
 
June 30,
 
September 30,
 
December 31,
 
 
2011
 
2010
 
2011
 
2010
 
2011
 
2010
 
2011
 
2010
 
 
(dollars in millions except per share data)
Revenue
 
$
914

 
$
900

 
$
913

 
$
892

 
$
927

 
$
895

 
$
1,579

 
$
904

Gross Margin
 
557

 
529

 
566

 
534

 
585

 
542

 
919

 
552

Operating Income (Loss)
 
(3
)
 
(38
)
 
3

 
(27
)
 
7

 
(18
)
 
45

 
(5
)
Net Loss
 
(204
)
 
(236
)
 
(180
)
 
(168
)
 
(208
)
 
(164
)
 
(164
)
 
(55
)
Loss per share (Basic and Diluted)
 
$
(1.82
)
 
$
(2.15
)
 
$
(1.58
)
 
$
(1.52
)
 
$
(1.76
)
 
$
(1.48
)
 
$
(0.80
)
 
$
(0.49
)