Summary Of Significant Accounting Policies (Components Of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Dec. 31, 2013
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at October 1, 2013	$ (19,234)
Other Comprehensive Gain Before Reclassification	3,080
Amounts Reclassified From Other Comprehensive Loss	(5,884)
Balance at December 31, 2013	(22,038)
Gains And Losses On Derivative Financial Instruments [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at October 1, 2013	30,722
Other Comprehensive Gain Before Reclassification	1,507
Amounts Reclassified From Other Comprehensive Loss	(5,884)
Balance at December 31, 2013	26,345
Gains And Losses On Securities Available For Sale [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at October 1, 2013	6,337
Other Comprehensive Gain Before Reclassification	1,573
Amounts Reclassified From Other Comprehensive Loss	0
Balance at December 31, 2013	7,910
Funded Status Of The Pension And Other Post-Retirement Benefit Plans [Member]
Accumulated Other Comprehensive Income (Loss) [Line Items]
Balance at October 1, 2013	(56,293)
Other Comprehensive Gain Before Reclassification	0
Amounts Reclassified From Other Comprehensive Loss	0
Balance at December 31, 2013	$ (56,293)