Summary of Significant Accounting Policies Summary of Significant Accounting Policies - Reclassifications (Details) $ in Millions	6 Months Ended
Jun. 30, 2016 USD ($)
Prior Period Reclassification Adjustment	$ 1.0
Adjustments for New Accounting Pronouncement [Member]
Prior Period Reclassification Adjustment	$ 16.8

The amount of a reclassification adjustment made to prior period financial statement amounts.

No definition available.

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