Summary of Significant Accounting Policies Derivative Instsruments (Details)	12 Months Ended
Jun. 30, 2018
Accounting Policies [Abstract]
Derivative, Remaining Maturity	6 months

Period remaining until the derivative contract matures, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

No definition available.

Name:	us-gaap_DerivativeRemainingMaturity1
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration