Share-Based Compensation (Summary Of All Transactions Related To Restricted Shares And Restricted Share Units) (Details) (Restricted Share And Share Units [Member], USD $) In Millions, except Per Share data, unless otherwise specified	9 Months Ended
	Mar. 31, 2012
Restricted Share And Share Units [Member]
Schedule Of Activity Related To Restricted Shares And Restricted Share [Line Items]
Share Units, Nonvested at June 30, 2011	3.6
Share Units, Granted	1.6
Share Units, Vested	(1.6)
Share Units, Canceled and forfeited	(0.1)
Share Units, Nonvested at March 31, 2012	3.5
Weighted Average Grant Date Fair Value Per Share, Nonvested at June 30, 2011	$ 31.31
Weighted Average Grant Date Fair Value Per Share, Granted	$ 41.68
Weighted Average Grant Date Fair Value Per Share, Vested	$ 32.44
Weighted Average Grant Date Fair Value Per Share, Canceled and forfeited	$ 35.24
Weighted Average Grant Date Fair Value Per Share, Nonvested at March 31, 2012	$ 35.41