Employee Benefit Plans (Pension Plans' Target Asset Allocation Ranges) (Details))	12 Months Ended
	Jun. 30, 2011
United States fixed income securities, minimum	35.00%
United States fixed income securities, maximum	45.00%
International Securities [Member]
Equity securities, minimum	12.00%
Equity securities, maximum	20.00%
United States Equity Securities [Member]
Equity securities, minimum	37.00%
Equity securities, maximum	50.00%