Shareholders' Equity (Summary Of Option Activity During The Period) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	6 Months Ended	12 Months Ended
	Dec. 31, 2012	Jun. 30, 2012
Shareholders' Equity [Abstract]
Shares under option at beginning of period	13,492	11,723
Shares under option, Granted	2,637	2,436
Shares under option, Exercised	(116)	(429)
Shares under option, Forfeited or expired	(160)	(238)
Shares under option at end of period	15,853	13,492
Shares under option, Exercisable	9,175
Weighted-average exercise price of Shares under option at beginning of period (in dollars per share)	$ 28.24	$ 28.35
Weighted-average exercise price of Shares under option, Granted (in dollars per share)	$ 26.25	$ 26.18
Weighted-average exercise price of Shares under option, Exercised (in dollars per share)	$ 18.18	$ 19.61
Weighted-average exercise price of Shares under option, Forfeited or expired (in dollars per share)	$ 27.40	$ 28.38
Weighted-average exercise price of Shares under option at end of period (in dollars per share)	$ 27.99	$ 28.24
Weighted-average exercise price of Shares under option, Exercisable (in dollars per share)	$ 28.65