Benefit Plans (Tables)

9 Months Ended

Jun. 30, 2012

Benefit Plans [Abstract]

Net pension and postretirement cost

Net pension and postretirement cost included the following components for the three months ended June 30:

	Pension Plans						Other Postretirement Benefits
	2012			2011			2012			2011
Service cost	$	17,295		$	23,114		$	1,287		$	1,463
Interest cost		21,020			23,470			2,405			3,289
Expected return on plan assets		(23,862	)		(25,790	)		—			—
Amortization of prior service credit		(2,531	)		(272	)		(173	)		(171	)
Amortization of loss		12,917			14,007			1,041			1,117
Net pension and postretirement cost	$	24,839		$	34,529		$	4,560		$	5,698

Net pension and postretirement cost included the following components for the nine months ended June 30:

	Pension Plans						Other Postretirement Benefits
	2012			2011			2012			2011
Service cost	$	58,047		$	68,767		$	4,232		$	4,381
Interest cost		70,549			69,828			8,840			9,856
Expected return on plan assets		(80,086	)		(76,731	)		—			—
Amortization of prior service credit		(8,495	)		(810	)		(518	)		(515	)
Amortization of loss		43,347			41,674			3,366			3,349
Curtailment/settlement loss		—			1,083			—			—
Net pension and postretirement cost	$	83,362		$	103,811		$	15,920		$	17,071