Other Income, Net (Narrative) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2011	Dec. 31, 2010	Jun. 30, 2011
Other Income, Net [Abstract]
Proceeds from sales and maturities of available-for-sale securities			$ 2,031.7	$ 1,559.4
Gain on sale of assets	66.0		66.0
Unrealized losses on sale of securities	(5.8)		(5.8)
Impairment charge	5.8		5.8
Income from Broadridge Financial Solutions, Inc. outsourcing agreement	29.4	27.4	57.9	54.7
Cost of services provided pursuant to the Broadridge Financial Solutions, Inc. outsourcing agreement	28.8	26.8	56.8	53.5
Receivable for services rendered pursuant to the Broadridge Financial Solutions, Inc. outsourcing agreement	9.1		9.1		9.5
Expiration date of Broadridge Financial Solutions, Inc. outsourcing agreement			June 30, 2012
Number of buildings reclassified as Assets Held for Sale			2
Impairment losses on assets held for sale				8.6
Number of buildings sold				2
Gains on sales of buildings				$ 1.8