Pension and Other Postretirement Benefits

6 Months Ended

Jun. 30, 2011

Pension and Other Postretirement Benefits [Abstract]

Pension and Other Postretirement Benefits

Note 10. Pension and Other Postretirement Benefits

	Pension Benefits
	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2011			2010			2011			2010
				(in millions)
Components of net periodic benefit cost:
Service cost	$	0.6		$	0.9		$	1.2		$	1.8
Interest cost		8.4			9.6			16.8			19.5
Expected return on plan assets		(10.9	)		(10.7	)		(21.8	)		(21.5	)
Amortization of prior service cost		(0.7	)		(0.6	)		(1.4	)		(1.3	)
Recognized actuarial loss		5.0			5.3			9.9			10.7
Net periodic benefit cost	$	2.4		$	4.5		$	4.7		$	9.2

	Other Postretirement Benefits
	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2011			2010			2011			2010
				(in millions)
Components of net periodic benefit cost:
Interest cost	$	0.9		$	1.2		$	1.8		$	2.4
Amortization of prior service cost		(0.5	)		(0.5	)		(1.0	)		(1.0	)
Recognized actuarial gain		(0.8	)		(0.5	)		(1.6	)		(1.0	)
Net periodic benefit cost (gain)	$	(0.4	)	$	0.2		$	(0.8	)	$	0.4