Pension and Other Postretirement Benefits Pension and Other Postretirement Benefits (Details 2) (Pension plans contribution [Member], USD $) In Thousands, unless otherwise specified	Jun. 30, 2013	Jun. 30, 2012
Pension plans contribution [Member]
Defined Benefit Plan Disclosure [Line Items]
Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Projected Benefit Obligation	$ 184,805	$ 855,697
Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Accumulated Benefit Obligation	183,056	835,870
Accumulated Benefit Obligations in Excess of Plan Assets, Aggregate Fair Value of Plan Assets	$ 34,405	$ 671,588