Stock and Other Compensation Plans (Details) - USD ($)	12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2013
Share-based Compensation, Allocation and Classification in Financial Statements [Abstract]
Stock Based Compensation Expense	$ 27,500,000	$ 25,500,000	$ 17,800,000
Authorized Shares	8,700,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available	308,582
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Nonvested at beginning of year-Shares	988,637	1,052,844	1,262,582
Nonvested at beginning of year-Weighted Average	$ 42.22	$ 36.20	$ 32.46
Granted-Shares	444,543	464,438	473,775
Granted-Weighted Average	$ 50.50	$ 45.05	$ 40.48
Vested-Shares	(551,688)	(524,532)	(657,795)
Vested-Weighted Average	$ 39.28	$ 32.67	$ 32.20
Forfeited-Shares	(3,388)	(4,113)	(25,718)
Forfeited-Weighted Average	$ 48.55	$ 39.00	$ 33.42
Nonvested at end of year-Shares	878,104	988,637	1,052,844
Nonvested at end of year-Weighted Average	$ 48.24	$ 42.22	$ 36.20
Unrecognized Compensation Cost	$ 10,200,000
Weighted Average Recognized Period	1 year 6 months
Fair Value Restricted Stock Vested	$ 21,700,000	$ 17,100,000	$ 21,200,000
Direct Stock Purchse Plan [Abstract]
Minimum Initial Investment for Direct Stock Purchase Plan	1,250
Minimum Continuing Investment for Direct Stock Purchase Plan	25
Annual Maximum Investment for Direct Stock Purchase Plan	$ 100,000