Annual report pursuant to Section 13 and 15(d)

Debt And Other Obligations (Convertible Senior Notes) (Narrative 1) (Details)

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Debt And Other Obligations (Convertible Senior Notes) (Narrative 1) (Details) (USD $)
0 Months Ended 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2011
Dec. 25, 2010
Dec. 26, 2009
Aug. 08, 2007
5.75% Convertible Senior Notes Due 2012 [Member]
Dec. 31, 2011
5.75% Convertible Senior Notes Due 2012 [Member]
Dec. 26, 2009
5.75% Convertible Senior Notes Due 2012 [Member]
Aug. 14, 2007
5.75% Convertible Senior Notes Due 2012 [Member]
Apr. 23, 2007
6.00% Convertible Senior Notes Due 2015 [Member]
Dec. 31, 2011
6.00% Convertible Senior Notes Due 2015 [Member]
Dec. 25, 2010
6.00% Convertible Senior Notes Due 2015 [Member]
Dec. 27, 2008
6.00% Convertible Senior Notes Due 2015 [Member]
Mar. 28, 2009
6.00% Convertible Senior Notes Due 2015 [Member]
Apr. 27, 2007
6.00% Convertible Senior Notes Due 2015 [Member]
Debt And Other Obligations [Line Items]                          
Principal amount         $ 485,000,000   $ 1,500,000,000   $ 580,000,000 $ 780,000,000     $ 2,200,000,000
Decrease for amounts repaid on the debt instrument for the period           1,015,000,000     200,000,000   1,400,000,000    
Interest rate 6.00% 6.00% 6.00%   5.75%       6.00%        
Repurchase amount of 6.00% convertible senior notes                 202,000,000        
Maturity year         August 15, 2012       May 1, 2015        
Equity component of debt instrument                 162,000,000 171,000,000   259,000,000  
Cash paid for repurchase           1,002,000,000     546,000,000   1,200,000,000    
Number of common stock based on initial conversion rate       49.6771       35.6125          
Denomination value of notes being converted to stock       1,000       1,000          
Debt instrument convertible conversion price after premium       $ 20.13       $ 28.08          
Percentage of premium represents initial conversion rate       50.00%       100.00%          
Conversion price       $ 13.42       $ 14.04          
Redemption rate of senior notes, equal to the principal amount plus accrued and unpaid interest         100.00%         100.00%      
Debt discount, net                 34,000,000        
The decrease in carrying amount of the equity component of convertible debt, which may be settled in cash upon conversion, for the period                 9,000,000        
Decrease for amounts repaid on the debt instrument for the period                 $ 191,000,000        
Unamortized discount, amortizable period, months                   40