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 6 Months Ended
Jun. 30, 2014
Jun. 30, 2013
Jun. 30, 2014
Jun. 30, 2013
Dec. 31, 2013
Indefinite-lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross $ 1,634   $ 1,634   $ 1,587
Finite-Lived Intangible Assets, Accumulated Amortization 464   464   387
Intangible assets subject to amortization, net 1,170   1,170   1,200
Amortization of Intangible Assets 41 29 77 55  
Finite-Lived Intangible Assets, Amortization Expense, Year Five 112   112    
Remainder of 2014 93   93    
2016 169   169    
2017 124   124    
2018 113   113    
Customer Relationships [Member]
          
Indefinite-lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross 854   854   838
Finite-Lived Intangible Assets, Accumulated Amortization 95   95   65
Intangible assets subject to amortization, net 759   759   773
Licensing Agreements [Member]
          
Indefinite-lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross 316   316   316
Finite-Lived Intangible Assets, Accumulated Amortization 36   36   22
Intangible assets subject to amortization, net 280   280   294
Other Intangible Assets [Member]
          
Indefinite-lived Intangible Assets [Line Items]          
Finite-Lived Intangible Assets, Gross 464   464   433
Finite-Lived Intangible Assets, Accumulated Amortization 333   333   300
Intangible assets subject to amortization, net $ 131   $ 131   $ 133