Summary Of Significant Accounting Policies (Narrative) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2009
Unrecognized tax benefits	$ 84.7	$ 105.7	$ 107.2	$ 92.8
Potential impact on earnings of tax settlements	10.0
Workers' compensation, maximum exposure per claim	1
Derivative financial instruments outstanding	$ 0	$ 0	$ 0
Minimum [Member]
Internal used software amortization period, in years	three
Minimum [Member] | Data Processing Equipment [Member]
Estimated useful lives, in years	2 years
Minimum [Member] | Buildings [Member]
Estimated useful lives, in years	20 years
Minimum [Member] | Furniture And Fixtures [Member]
Estimated useful lives, in years	3 years
Maximum [Member]
Investment securities maturity period, in days	90 days
Internal used software amortization period, in years	five
Maximum [Member] | Data Processing Equipment [Member]
Estimated useful lives, in years	5 years
Maximum [Member] | Buildings [Member]
Estimated useful lives, in years	40 years
Maximum [Member] | Furniture And Fixtures [Member]
Estimated useful lives, in years	7 years