Employee Benefit Plans (Tables)

3 Months Ended

Mar. 31, 2012

Employee Benefit Plans [Abstract]

Summary of net periodic pension cost

	Three Months Ended March  31,
	2012			2011
Service cost	$	0.4		$	0.4
Interest cost		0.7			0.6
Expected return on plan assets		(0.6	)		(0.7	)
Amortization of acturial loss		0.2			—
Net periodic benefit cost	$	0.7		$	0.3