Subsequent Event (Details) $ in Millions	12 Months Ended
Dec. 31, 2014 USD ($)
Subsequent Events [Abstract]
Business Acquisition, Revenue Reported by Acquired Entity for Last Annual Period	$ 75

Total revenue reported by the acquired entity for its previous full fiscal year before the business acquisition.

No definition available.

Name:	us-gaap_BusinessAcquisitionRevenueReportedByAcquiredEntityForLastAnnualPeriod
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration