Employee Benefit Plans (Tables)

6 Months Ended

Jun. 30, 2011

Employee Benefit Plans

Components of net periodic pension cost

	Three Months Ended June 30,						Six Months Ended June 30,
	2011			2010			2011			2010
Service cost	$	1.3		$	1.1		$	2.3		$	2.0
Interest cost	1.5			1.3			2.8			2.5
Expected return on plan assets	(1.0		)	(0.9		)	(1.8		)	(1.8		)
Amortization of prior service costs	—			0.2			—			0.5
Net periodic benefit costs	$	1.8		$	1.7		$	3.3		$	3.2