Retirement Plans (Details 2) (USD $) In Thousands, unless otherwise specified	12 Months Ended
Sep. 30, 2012
Net loss/(gain)	$ 243,262
Prior service cost	102,181
Pension and Other Postretirement Benefit Plans, Accumulated Other Comprehensive Income (Loss), before Tax	$ 345,443

The pretax total of net gain (loss), prior service cost (credit), and transition assets (obligations), as well as minimum pension liability if still remaining, included in accumulated other comprehensive income associated with a defined benefit pension or other postretirement plan(s) because they have yet to be recognized as components of net periodic benefit cost.

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Before tax amount, net of reclassification adjustments, of the benefit improvement costs resulting from a plan amendment that occurred that has not been recognized in net periodic benefit cost.

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