Employee Benefit Plans (Components Of Stock-Based Compensation Expense) (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jun. 30, 2014	Jun. 30, 2013	Jun. 30, 2012
Defined Benefit Plan Disclosure [Line Items]
Stock-based compensation expense	$ 138.4	$ 96.4	$ 94.1
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options	49.5	34.3	33.5
Operating Expenses [Member]
Defined Benefit Plan Disclosure [Line Items]
Stock-based compensation expense	25.7	17.9	17.2
Selling, General And Administrative Expenses [Member]
Defined Benefit Plan Disclosure [Line Items]
Stock-based compensation expense	93.7	64.0	62.6
System Development And Programming Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Stock-based compensation expense	$ 19.0	$ 14.5	$ 14.3