Employee Benefit Plans (Assumptions Used To Estimate Fair Value For Stock Options Granted) (Details) (USD $)	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010
Risk-free interest rate, minimum	0.80%	1.40%	2.30%
Risk-free interest rate, maximum	1.00%	2.40%	2.60%
Dividend yield, minimum	2.80%	2.90%	3.20%
Dividend yield, maximum	3.10%	3.30%	3.40%
Weighted average volatility factor, minimum	24.90%	24.50%	25.90%
Weighted average volatility factor, maximum	25.90%	24.90%	30.40%
Stock Options [Member]
Fair value	8.46	7.59	7.05
Minimum [Member]
Weighted average expected life, in years	5 years 2 months 12 days	5 years 1 month 6 days	5 years
Maximum [Member]
Weighted average expected life, in years	5 years 3 months 18 days	5 years 2 months 12 days	5 years 1 month 6 days