Stock-Based Compensation (Schedule Of Restricted Stock And Restricted Stock Unit Activity) (Details) (USD $)	3 Months Ended
	Jun. 30, 2012	Sep. 30, 2011
Restricted Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Beginning balance of outstanding restricted stock, Shares		90,000
Granted, Shares	57,000
Vested, Shares	(70,000)
Ending balance of outstanding restricted stock, Shares	77,000	90,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Weighted Average Grant Date Fair Value, Beginning Balance of outstanding restricted stock		$ 21.30
Weighted Average Grant Date Fair Value, Granted	$ 25.27
Weighted Average Grant Date Fair Value, Vested	$ 21.27
Weighted Average Grant Date Fair Value, Ending Balance of outstanding restricted stock	$ 24.24	$ 21.30
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested [Roll Forward]
Beginning balance of outstanding restricted stock, Shares		5,490,000
Granted, Shares	2,778,000
Vested, Shares	(2,731,000)
Forfeited or not earned, Shares	(346,000)
Ending balance of outstanding restricted stock, Shares	5,191,000	5,490,000
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value [Roll Forward]
Weighted Average Grant Date Fair Value, Beginning Balance of outstanding restricted stock		$ 17.75
Weighted Average Grant Date Fair Value, Granted	$ 20.05
Weighted Average Grant Date Fair Value, Vested	$ 15.71
Weighted Average Grant Date Fair Value, Forfeited or not earned	$ 18.79
Weighted Average Grant Date Fair Value, Ending Balance of outstanding restricted stock	$ 19.98	$ 17.75