Benefit Plans (Actuarial Assumptions for Net Cost or Benefit) (Details)	12 Months Ended			6 Months Ended
	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2014	Jun. 30, 2014
Pension Plans, Defined Benefit [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate	4.65%	3.80%	4.60%
Expected long term rate of return	7.50%	7.75%	8.00%
Rate of compensation increases	3.99%	4.066%	4.125%
Other Postretirement Benefit Plan [Member]
Defined Benefit Plan Disclosure [Line Items]
Discount rate		2.80%	3.75%	3.10%	3.60%