Summary Of Significant Accounting Policies (Components Of Accumulated Other Comprehensive Income (Loss)) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended	9 Months Ended
	Jun. 30, 2014	Jun. 30, 2014
Accumulated Other Comprehensive Income [Roll Forward]
Balance at Beginning of Period	$ (45,055)	$ (19,234)
Other Comprehensive Gains and Losses Before Reclassification	(4,794)	(40,200)
Amounts Reclassified From Other Comprehensive Loss	6,211	15,796
Balance at End of Period	(43,638)	(43,638)
Gains And Losses On Derivative Financial Instruments [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Balance at Beginning of Period	2,937	30,722
Other Comprehensive Gains and Losses Before Reclassification	(5,565)	(42,935)
Amounts Reclassified From Other Comprehensive Loss	6,202	15,787
Balance at End of Period	3,574	3,574
Gains And Losses On Securities Available For Sale [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Balance at Beginning of Period	8,301	6,337
Other Comprehensive Gains and Losses Before Reclassification	771	2,735
Amounts Reclassified From Other Comprehensive Loss	9	9
Balance at End of Period	9,081	9,081
Funded Status Of The Pension And Other Post-Retirement Benefit Plans [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Balance at Beginning of Period	(56,293)	(56,293)
Other Comprehensive Gains and Losses Before Reclassification	0	0
Amounts Reclassified From Other Comprehensive Loss	0	0
Balance at End of Period	$ (56,293)	$ (56,293)