Employee Benefit Plans (Assumptions Used To Estimate Fair Value For Stock Options Granted) (Details) (USD $)	9 Months Ended
	Mar. 31, 2012	Mar. 31, 2011
Defined Benefit Plan Disclosure [Line Items]
Risk-free interest rate, minimum	0.80%	1.40%
Risk-free interest rate, maximum	1.00%	2.40%
Weighted average fair value (in dollars)	$ 8.46	$ 7.59
Maximum [Member]
Defined Benefit Plan Disclosure [Line Items]
Dividend yield	3.10%	3.30%
Weighted average volatility factor	25.70%	24.90%
Weighted average expected life	5 years 3 months 18 days	5 years 2 months 12 days
Minimum [Member]
Defined Benefit Plan Disclosure [Line Items]
Dividend yield	2.80%	2.90%
Weighted average volatility factor	24.90%	24.50%
Weighted average expected life	5 years 2 months 12 days	5 years 1 month 6 days