Pension and Other Postretirement Benefits (Tables)

9 Months Ended

Sep. 30, 2012

Pension and Other Postretirement Benefits

Schedule of components of net periodic benefit cost for defined benefit plans

	Pension Benefits						Postretirement Benefits Other than Pensions
	Three Months Ended September 30,
	2012			2011			2012		2011
Service cost	$	1.1		$	1.0		$	0.5	$	0.4
Interest cost	3.5			3.6			0.5		0.5
Expected return on plan assets (a)	(3.8		)	(3.7		)	—		—
Recognized net actuarial loss	1.0			0.4			—		0.1
Amortization of prior service cost	0.1			0.1			—		0.1
Net periodic benefit cost	$	1.9		$	1.4		$	1.0	$	1.1

	Pension Benefits						Postretirement Benefits Other than Pensions
	Nine Months Ended September 30,
	2012			2011			2012		2011
Service cost	$	3.4		$	3.0		$	1.4	$	1.3
Interest cost	10.6			10.9			1.5		1.7
Expected return on plan assets (a)	(11.4		)	(11.2		)	—		—
Recognized net actuarial loss	3.1			1.2			0.2		0.2
Amortization of prior service cost	0.2			0.2			0.1		0.3
SERP settlement charge	3.5			—			—		—
Curtailment loss	—			—			0.3		—
Net periodic benefit cost	$	9.4		$	4.1		$	3.5	$	3.5

(a)The expected return on plan assets is determined by multiplying the fair value of plan assets at the prior year-end (adjusted for estimated current year cash benefit payments and contributions) by the expected long-term rate of return.