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Earnings Per Share (Reconciliation of Common Shares Used to Compute Basic and Diluted EPS) (Details)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Mar. 31, 2014
Mar. 31, 2013
Mar. 31, 2014
Mar. 31, 2013
Earnings Per Share [Abstract]        
Weighted-average common shares-basic 342 341 341 341
Effect of dilutive securities:        
Employee stock options, restricted share units and performance share units 5 4 5 3
Weighted-average common shares-diluted 347 345 346 344