Retirement and Postretirement Plans (Tables)

3 Months Ended

Dec. 31, 2012

Retirement and Postretirement Plans [Abstract]

Components of Net Pension Expense for Defined Benefit Plans

	Quarterly Period Ended December 31
	2012			2011
Service cost	$	1.5		$	1.4
Interest cost		3.3			3.3
Expected return on plan assets		(4.0	)		(4.2	)
Amortization of unrecognized prior service cost, net		0.1			0.2
Amortization of net loss		2.0			1.5
Net pension expense	$	2.9		$	2.2