Stock-Based Compensation (Stock Options Vested, Or Expected to Vest and Are Exercisable) (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Dec. 31, 2013	Sep. 30, 2013
Stock-Based Compensation
Options outstanding, Number of options	4,947	4,423
Options outstanding, Weighted-Average Exercise Price	$ 27.23	$ 25.06
Options outstanding, Weighted-Average Remaining Life in Years	6 years 1 month 6 days
Options outstanding, Aggregate Intrinsic Value	$ 90,914
Options vested and exercisable, Number of options	3,176
Options vested and exercisable, Weighted-Average Exercise Price Per Share	$ 23.04
Options vested and exercisable, Weighted-Average Remaining Life in Years	4 years 7 months 6 days
Options vested and exercisable, Aggregate Intrinsic Value	71,670
Options vested and expected to vest, Number of options	4,796
Options vested and expected to vest, Weighted-Average Exercise Price Per Share	$ 26.96
Options vested and to expected vest, Weighted-Average Remaining Life in Years	6 years
Options vested and expected to vest, Aggregate Intrinsic Value	$ 89,459