Organization and Principles of Consolidation Recent accounting pronouncements (Details) $ in Millions	9 Months Ended
Sep. 30, 2015 USD ($)
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Document Period End Date	Sep. 30, 2015
Parent Company [Member]
Consolidation, Less than Wholly Owned Subsidiary, Parent Ownership Interest, Effects of Changes, Net [Line Items]
Proceeds from Issuance of Debt	$ 8.8

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