Pension and Postretirement Benefit Plans (Plan Assets) (Details) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Equity Securities [Member] | Common Stock - $1 par value [Member]
Defined Benefit Plan Disclosure [Line Items]
Company stock included in equity securities plan assets	0	0
Equity Securities [Member] | Class B Stock [Member]
Defined Benefit Plan Disclosure [Line Items]
Company stock included in equity securities plan assets	0	0
Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan assets allocation	100.00%	100.00%
Actual plan assets allocation	100.00%	100.00%
Pension Plans [Member] | Domestic Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan assets allocation	35.00%	35.00%
Actual plan assets allocation	34.00%	34.00%
Pension Plans [Member] | International Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan assets allocation	25.00%	25.00%
Actual plan assets allocation	24.00%	25.00%
Pension Plans [Member] | Global Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan assets allocation	10.00%	10.00%
Actual plan assets allocation	10.00%	10.00%
Pension Plans [Member] | Fixed Income Investments [Member]
Defined Benefit Plan Disclosure [Line Items]
Target plan assets allocation	30.00%	30.00%
Actual plan assets allocation	32.00%	31.00%