Employee Benefit Plans - Target Plan Asset Allocation (Details)	12 Months Ended
	Jun. 30, 2016
Defined Benefit Plan Disclosure
Target Plan Asset Allocations	100.00%
U.S. Large Cap Equity Securities
Defined Benefit Plan Disclosure
Target Plan Asset Allocations	42.80%
U.S. Small Cap Equity Securities
Defined Benefit Plan Disclosure
Target Plan Asset Allocations	5.20%
International Equity Securities
Defined Benefit Plan Disclosure
Target Plan Asset Allocations	16.00%
Debt Securities
Defined Benefit Plan Disclosure
Target Plan Asset Allocations	30.00%
Real Estate
Defined Benefit Plan Disclosure
Target Plan Asset Allocations	6.00%