Employee Benefit Plans (Pension Plan Asset Allocation by Asset Category) (Details)	Jun. 30, 2016	Jun. 30, 2015
Defined Benefit Plan Disclosure [Line Items]
Pension plans' asset allocations	100.00%	100.00%
Cash and Cash Equivalents [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plans' asset allocations	3.00%	9.00%
United States Fixed Income Securities
Defined Benefit Plan Disclosure [Line Items]
Pension plans' asset allocations	42.00%	33.00%
United States Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plans' asset allocations	18.00%	17.00%
International Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Pension plans' asset allocations	14.00%	19.00%
Global Equity Securities [Domain]
Defined Benefit Plan Disclosure [Line Items]
Pension plans' asset allocations	23.00%	22.00%