Employee Benefit Plans (Actual Asset Allocation For Global Pension Plan Assets) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended	12 Months Ended
	Dec. 31, 2012	Jun. 30, 2012	Jun. 30, 2011
Pension Benefits [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	100.00%	100.00%	100.00%
Cash dividend received on employer's common stock under pension plans	$ 0	$ 0	$ 0.1
Pension Benefits [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	52.00%	51.00%	52.00%
Pension Benefits [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	47.00%	48.00%	47.00%
Pension Benefits [Member] | Other Pension Plan Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	1.00%	1.00%	1.00%
U.S. Pension Plans [Member]
Defined Benefit Plan Disclosure [Line Items]
Percentage of U.S. pension plan to global pension plan assets (as a percent)	67.00%
U.S. Pension Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	60.00%
U.S. Pension Plans [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	40.00%
Foreign Pension Plans [Member] | Equity Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	36.00%
Foreign Pension Plans [Member] | Debt Securities [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	61.00%
Foreign Pension Plans [Member] | Other Pension Plan Assets [Member]
Defined Benefit Plan Disclosure [Line Items]
Asset allocation	3.00%