Employee Benefits (Tables)

3 Months Ended

Mar. 31, 2012

Employee Benefits [Abstract]

Pension and Other Postretirement Benefit Costs

The following table sets forth the Company's pension and postretirement benefits net period benefit costs:

	Pension						Postretirement benefits
	Three Months Ended March 31,						Three Months Ended March 31,
	2012			2011			2012		2011
	(in millions)
Service cost	$	1.0		$	0.7		$	-	$	-
Interest cost		1.2			1.1			0.1		0.1
Expected return on plan assets		(0.9	)		(0.6	)		-		-
Amortization of prior service costs		1.3			1.3			0.1		0.1
Amortization of actuarial loss		0.2			-			-		-
Periodic expense	$	2.8		$	2.5		$	0.2	$	0.2