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Employee Benefit Plans (Details) (USD $)
In Millions, unless otherwise specified |
12 Months Ended | ||
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Dec. 31, 2014
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Dec. 31, 2013
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Dec. 31, 2012
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| Employee Benefit Plans [Abstract] | |||
| Defined Benefit Plan, Contributions by Employer | $ 27us-gaap_DefinedBenefitPlanContributionsByEmployer | $ 24us-gaap_DefinedBenefitPlanContributionsByEmployer | $ 19us-gaap_DefinedBenefitPlanContributionsByEmployer |
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- Details
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- Definition
The increase in the fair value of plan assets from contributions made by the employer. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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