Retirement Benefits (Assumptions Used To Determine Benefit Obligations And Net Periodic Pension And Other Postretirement Benefit Costs) (Details)	12 Months Ended
Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Retirement Benefits
Benefit obligation discount rates for pension plans minimum	4.70%	4.50%	6.00%
Benefit obligation discount rates for pension plans maximum	5.90%	5.00%	6.25%
Benefit obligation rates of compensation increase for pension plans, minimum	2.50%	2.50%	2.50%
Benefit obligation rates of compensation increase for pension plans, maximum	4.00%	4.00%	4.00%
Net periodic discount rates for pension plans, minimum	4.10%	4.50%	6.00%
Net periodic discount rates for pension plans, maximum	5.60%	6.17%	6.25%
Net periodic rates of compensation increase for pension plans, minimum	2.50%	2.50%	2.50%
Net periodic rates of compensation increase for pension plans, maximum	4.00%	4.00%	4.00%

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