Share-Based Compensation and Savings Plans (Schedule of all Transactions Related to Performance Share Units Under the Plans) (Details) (Performance Share Units, USD $) In Millions, except Per Share data, unless otherwise specified	12 Months Ended
	Jun. 30, 2014		Jun. 30, 2013
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage	143.00%
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number of Shares [Roll Forward]
Nonvested at Beginning of Period	0.8		0.5
Granted	0.3		0.3
Vested	(0.2)	[1]	0
Canceled and forfeited	0		0
Nonvested at End of Period	0.9		0.8
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted-Average Grant Date Fair Value [Roll Forward]
Weighted-Average Grant Date Fair Value Per Share, Nonvested at Beginning of Period	$ 41.37		$ 42.60
Weighted-Average Grant Date Fair Value Per Share, Granted	$ 51.49		$ 39.81
Weighted-Average Grant Date Fair Value Per Share, Vested	$ 41.60		$ 0.00
Weighted-Average Grant Date Fair Value Per Share, Canceled and forfeited	$ 0.00		$ 0.00
Weighted-Average Grant Date Fair Value Per Share, Nonvested at End of Period	$ 44.41		$ 41.37

[1] Vested based on achievement of 143 percent of the target performance goal.