Pension and Other Postretirement Benefits (Details 8)	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Pension and Other Postretirement Benefit Disclosures
Weighted-average asset allocation (as a percent)	100.00%	100.00%
Percentage increase in funding level to shift assets from return seeking to liability hedging	5.00%
Percentage change in assets allocation from assets seeking to liability hedging due to increase in funding level	4.00%
Equity securities
Pension and Other Postretirement Benefit Disclosures
Weighted-average asset allocation (as a percent)	55.10%	63.50%
Fixed income securities
Pension and Other Postretirement Benefit Disclosures
Weighted-average asset allocation (as a percent)	44.20%	34.30%
Cash and cash equivalents
Pension and Other Postretirement Benefit Disclosures
Weighted-average asset allocation (as a percent)	0.70%	2.20%
U.S. Pension Plans | Return seeking asset
Pension and Other Postretirement Benefit Disclosures
Plan's current allocation policy (as a percent)	60.00%
U.S. Pension Plans | Liability hedging assets
Pension and Other Postretirement Benefit Disclosures
Plan's current allocation policy (as a percent)	40.00%
Other Postretirement Plans | Equity securities
Pension and Other Postretirement Benefit Disclosures
Plan's current allocation policy (as a percent)	60.00%
Other Postretirement Plans | Fixed income securities
Pension and Other Postretirement Benefit Disclosures
Plan's current allocation policy (as a percent)	40.00%