Pension and Other Postretirement Benefits (Details 8)									12 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013 Equity securities	Jun. 30, 2012 Equity securities	Jun. 30, 2013 Fixed income securities	Jun. 30, 2012 Fixed income securities	Jun. 30, 2013 Cash and cash equivalents	Jun. 30, 2012 Cash and cash equivalents	Jun. 30, 2013 U.S. Pension Plans Equity securities	Jun. 30, 2013 U.S. Pension Plans Fixed income securities	Jun. 30, 2013 Other Postretirement Plans Equity securities	Jun. 30, 2013 Other Postretirement Plans Fixed income securities
Pension and Other Postretirement Benefit Disclosures
Weighted-average asset allocation (as a percent)	100.00%	100.00%	63.50%	66.00%	34.30%	31.30%	2.20%	2.70%
Plan's current allocation policy (as a percent)									60.00%	40.00%	60.00%	40.00%