Employee Benefits (Tables)

6 Months Ended

Jun. 30, 2012

Employee Benefits [Abstract]

Pension and Other Postretirement Benefit Costs

	Pension
	Three Months Ended June 30,						Six Months Ended June 30,
	2012			2011			2012			2011
	(in millions)
Service cost	$	0.9		$	0.7		$	1.9		$	1.4
Interest cost		1.2			1.1			2.4			2.2
Expected return on plan assets		(0.9	)		(0.6	)		(1.8	)		(1.2	)
Amortization of prior service costs		1.3			1.3			2.6			2.6
Amortization of actuarial loss		0.2			-			0.4			-
Periodic expense	$	2.7		$	2.5		$	5.5		$	5.0

	Postretirement benefits
	Three Months Ended June 30,				Six Months Ended June 30,
	2012		2011		2012		2011
	(in millions)
Service cost	$	-	$	-	$	-	$	-
Interest cost		0.1		0.1		0.2		0.2
Expected return on plan assets		-		-		-		-
Amortization of prior service costs		0.1		0.1		0.2		0.2
Recognized net actuarial loss		-		-		-		-
Periodic expense	$	0.2	$	0.2	$	0.4	$	0.4