Employee Benefit Plans (Components Of Stock-Based Compensation Expense) (Details) - USD ($) $ in Millions	12 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2013
Defined Benefit Plan Disclosure [Line Items]
Stock-based compensation expense	$ 143.2	$ 117.1	$ 82.0
Employee Service Share-based Compensation, Tax Benefit Realized from Exercise of Stock Options	51.1	42.2	29.4
Operating Expenses [Member]
Defined Benefit Plan Disclosure [Line Items]
Stock-based compensation expense	27.0	21.7	15.0
Selling, General And Administrative Expenses [Member]
Defined Benefit Plan Disclosure [Line Items]
Stock-based compensation expense	95.8	79.5	54.7
System Development And Programming Costs [Member]
Defined Benefit Plan Disclosure [Line Items]
Stock-based compensation expense	$ 20.4	$ 15.9	$ 12.3