Stock-Based Compensation (Details 1) (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended
	Sep. 30, 2011 Year
Changes in stock options
Options outstanding, June 30, 2011	3,388,003
Options, Granted	354,618
Options, Exercised	(129,475)
Options, Lapsed and Forfeited	(16,833)
Options outstanding, September 30, 2011	3,596,313
Options vested and expected to vest, September 30, 2011	3,489,292
Options exercisable, September 30, 2011	2,353,830
Weighted Average Exercise Price, Options outstanding, June 30, 2011	$ 26.50
Weighted Average Exercise Price, Granted	$ 38.95
Weighted Average Exercise Price, Exercised	$ 27.70
Weighted Average Exercise Price, Lapsed and Forfeited	$ 30.42
Weighted Average Exercise Price, Options outstanding, September 30, 2011	$ 27.67
Weighted Average Exercise Price, Option vested and expected to vest, September 30, 2011	$ 27.61
Weighted Average Exercise Price, Options exercisable, September 30, 2011	$ 26.89
Weighted Average Remaining Life, Options outstanding, September 30, 2011	6.3
Weighted Average Remaining Life, Options vested and expected to vest, September 30, 2011	6.2
Weighted Average Remaining Life, Options exercisable, September 30, 2011	5.1
Aggregate Intrinsic value, Options outstanding, September 30, 2011	$ 22,776
Aggregate Intrinsic Value, Options vested and expected to vest, September 30, 2011	22,235
Aggregate Intrinsic Value, Options exercisable, September 30, 2011	$ 16,021