Employee Benefits (Tables)

9 Months Ended

Sep. 30, 2012

Components of the Estimated Net Pension and Postretirement Benefits (Income) Expense

The components of net pension and postretirement benefits (income) expense for the three and nine months ended September 30, 2012 and 2011 were as follows:

	Three Months Ended September 30,						Nine Months Ended September 30,
	2012			2011			2012			2011
Pension (income) expense
Service cost	$	1.7		$	21.3		$	5.2		$	64.1
Interest cost		47.5			48.4			142.3			145.4
Expected return on assets		(65.9	)		(67.2	)		(197.5	)		(201.6	)
Amortization, net		6.7			12.4			20.6			37.4
Net pension (income) expense	$	(10.0	)	$	14.9		$	(29.4	)	$	45.3
Postretirement benefits (income) expense
Service cost	$	1.7		$	1.8		$	5.0		$	6.4
Interest cost		4.7			5.2			13.9			17.6
Expected return on assets		(3.6	)		(3.6	)		(10.5	)		(11.2	)
Amortization, net		(5.0	)		(5.0	)		(14.9	)		(7.5	)
Net postretirement benefits (income) expense	$	(2.2	)	$	(1.6	)	$	(6.5	)	$	5.3