v2.4.0.8
Debt Obligations (Changes in Debt Obligations) (Details) (USD $)
In Millions, unless otherwise specified
9 Months Ended
Sep. 30, 2013
Dec. 31, 2012
Debt Instrument [Line Items]    
Total debt obligations $ 2,718 $ 1,976
Less current portion (45) (136)
Total long-term debt obligations 2,673 1,840
Proceed from term loan 902  
Payments, Conversions, Accretion and Other (160)  
2.50% convertible senior notes due August 15, 2013 [Member]
   
Debt Instrument [Line Items]    
Total debt obligations   91 [1]
Payments, Conversions, Accretion and Other (91) [1]  
4.00% senior unsecured notes due January 15, 2015 [Member]
   
Debt Instrument [Line Items]    
Total debt obligations 399 [2] 399 [2]
5.55% senior unsecured notes due January 15, 2020 [Member]
   
Debt Instrument [Line Items]    
Total debt obligations 598 [2] 598 [2]
5.25% senior unsecured notes due January 16, 2018 [Member]
   
Debt Instrument [Line Items]    
Total debt obligations 368 [2] 368 [2]
3.875% senior unsecured notes due June 7, 2021 [Member]
   
Debt Instrument [Line Items]    
Total debt obligations 811 [2]  
Proceed from term loan 782 [2]  
Payments, Conversions, Accretion and Other 29 [2]  
$450 million senior unsecured term loan facility credit agreement due September 19, 2016 [Member]
   
Debt Instrument [Line Items]    
Total debt obligations 360 [3] 394 [3]
Payments, Conversions, Accretion and Other (34) [3]  
$750 million revolving credit commitment due September 19, 2016 [Member]
   
Debt Instrument [Line Items]    
Total debt obligations 182 [3] 126 [3]
Proceed from term loan 120 [3]  
Payments, Conversions, Accretion and Other (64) [3]  
Debt Current [Member]
   
Debt Instrument [Line Items]    
Less current portion (45) (136)
Payments, Conversions, Accretion and Other 91  
Debt Non Current [Member]
   
Debt Instrument [Line Items]    
Total long-term debt obligations 2,673 1,840
Proceed from term loan 902  
Payments, Conversions, Accretion and Other $ (69)  
[1] See “2.50% Convertible Senior Notes” below for further discussion.
[2] See “Senior Unsecured Notes” below for further discussion.
[3] See “2011 Credit Facility” below for further discussion.