Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets Finite-lived intangible assets (Details)

v2.4.0.6
Intangible Assets Finite-lived intangible assets (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
Dec. 31, 2010
Finite-Lived Intangible Assets [Line Items]        
Amortization of Intangible Assets $ 26 $ 3    
Finite-Lived Intangible Assets, Accumulated Amortization (484)     (458)
Finite-Lived Intangible Assets, Gross 1,523     566
Finite-Lived Intangible Assets, Net 1,039   108 108
Minimum [Member]
        
Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Asset, Useful Life 6 years      
Maximum [Member]
        
Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Asset, Useful Life 15 years      
Customer Relationships [Member]
        
Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Assets, Accumulated Amortization (34)     (23)
Finite-Lived Intangible Assets, Gross 621     51
Finite-Lived Intangible Assets, Net 587     28
Licensing Agreements [Member]
        
Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Assets, Accumulated Amortization (6)     0
Finite-Lived Intangible Assets, Gross 310     0
Finite-Lived Intangible Assets, Net 304     0
Other Intangible Assets [Member]
        
Finite-Lived Intangible Assets [Line Items]        
Finite-Lived Intangible Assets, Accumulated Amortization (444)     (435)
Finite-Lived Intangible Assets, Gross 592     515
Finite-Lived Intangible Assets, Net $ 148     $ 80