Quarterly report pursuant to Section 13 or 15(d)

Intangible Assets Intangible Assets (Intangible Assets Subject to Amortization) (Details)

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Intangible Assets Intangible Assets (Intangible Assets Subject to Amortization) (Details) (USD $)
In Millions, unless otherwise specified
 3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Dec. 31, 2013
Indefinite-lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross $ 1,647   $ 1,647   $ 1,587
Accumulated amortization (502)   (502)   (387)
Intangible assets subject to amortization, net 1,145   1,145   1,200
Amortization of Intangible Assets 38 30 115 85  
Finite-Lived Intangible Assets, Amortization Expense, Maturity Schedule [Abstract]          
Remainder of 2014 45   45    
2015 172   172    
2016 127   127    
2017 115   115    
2018 105   105    
Customer Relationships [Member]
          
Indefinite-lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross 854   854   838
Accumulated amortization (110)   (110)   (65)
Intangible assets subject to amortization, net 744   744   773
Licensing Agreements [Member]
          
Indefinite-lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross 316   316   316
Accumulated amortization (43)   (43)   (22)
Intangible assets subject to amortization, net 273   273   294
Other Intangible Assets [Member]
          
Indefinite-lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross 477   477   433
Accumulated amortization (349)   (349)   (300)
Intangible assets subject to amortization, net $ 128   $ 128   $ 133