| Goodwill and Other Intangible Assets (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended | ||
|---|---|---|---|
| Dec. 31, 2014 | Dec. 31, 2013 | Dec. 31, 2012 | |
| Finite-Lived Intangible Assets [Line Items] | 听 | 听 | 听 | 
| Amortization of Intangible Assets | $ 150us-gaap_AmortizationOfIntangibleAssets | $ 115us-gaap_AmortizationOfIntangibleAssets | $ 19us-gaap_AmortizationOfIntangibleAssets | 
| 2015 | 158us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseNextTwelveMonths | 听 | 听 | 
| 2016 | 137us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearTwo | 听 | 听 | 
| 2017 | 105us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearThree | 听 | 听 | 
| 2018 | 95us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFour | 听 | 听 | 
| 2019 | $ 96us-gaap_FiniteLivedIntangibleAssetsAmortizationExpenseYearFive | 听 | 听 | 
| Customer Relationships [Member] | Minimum | 听 | 听 | 听 | 
| Finite-Lived Intangible Assets [Line Items] | 听 | 听 | 听 | 
| Finite-Lived Intangible Asset, Useful Life | 10 years | 听 | 听 | 
| Customer Relationships [Member] | Maximum | 听 | 听 | 听 | 
| Finite-Lived Intangible Assets [Line Items] | 听 | 听 | 听 | 
| Finite-Lived Intangible Asset, Useful Life | 15 years | 听 | 听 | 
| Licensing Agreements [Member] | 听 | 听 | 听 | 
| Finite-Lived Intangible Assets [Line Items] | 听 | 听 | 听 | 
| Finite-Lived Intangible Asset, Useful Life | 15 years | 听 | 听 | 
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- Definition The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Amount of amortization expense for assets, excluding financial assets and goodwill, lacking physical substance with a finite life expected to be recognized during the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. Reference 1: http://www.xbrl.org/2003/role/presentationRef 
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. No definition available. 
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