Stockholders' Equity (Schedule Of Option Activity) (Details) (USD $)	6 Months Ended	12 Months Ended
	Dec. 31, 2013	Jun. 30, 2013
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Outstanding at beginning of period	6,316,136
Options, Granted	161,005
Options, Exercised	(745,512)
Options, Forfeited	(37,675)
Options, Outstanding at end of period	5,693,954	6,316,136
Options exercisable at end of period	4,555,349
Weighted Average Exercise Price, Outstanding at beginning of period	$ 22.68
Weighted Average Exercise Price, Granted	$ 48.56
Weighted Average Exercise Price, Exercised	$ 19.74
Weighted Average Exercise Price, Forfeited	$ 39.60
Weighted Average Exercise Price, Outstanding at end of period	$ 23.69	$ 22.68
Weighted Average Exercise Price, Options exercisable at end of period	$ 20.66
Weighted Average Remaining Term to Vest in Years, Outstanding	2 years 9 months 18 days	3 years 1 month 6 days
Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Exercise price range of granted options	$ 46.15
Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options, Exercise price range of granted options	$ 51.25