Retirement And Other Benefit Plans (Schedule Of Asset Allocation For Pension Plans Acceptable Range And Target Allocation By Asset Category) (Details)	12 Months Ended
	Sep. 30, 2014 Equity Securities [Member]	Sep. 30, 2013 Equity Securities [Member]	Sep. 30, 2015 Equity Securities [Member] Subsequent Event [Member]	Sep. 30, 2014 Fixed Income Funds [Member]	Sep. 30, 2013 Fixed Income Funds [Member]	Sep. 30, 2015 Fixed Income Funds [Member] Subsequent Event [Member]	Sep. 30, 2014 Cash and Cash Equivalents [Member]	Sep. 30, 2013 Cash and Cash Equivalents [Member]	Sep. 30, 2015 Cash and Cash Equivalents [Member] Subsequent Event [Member]
Target Acceptable Percentage of Plan Range Assets, Minimum			34.00%			58.00%			0.00%
Target Acceptable Percentage of Plan Range Assets, Maximum			42.00%			66.00%			5.00%
Asset Allocation	35.00%	34.00%	38.00%	64.00%	65.00%	62.00%	1.00%	1.00%	0.00%