Employee Benefits (Tables)

6 Months Ended

Jun. 30, 2014

Components of Estimated Net Pension and Other Postretirement Benefit Plan (Income) Expense

The components of the estimated net pension and other postretirement benefits plan income for the three and six months ended June 30, 2014 and 2013 were as follows:

	Three Months Ended						Six Months Ended
	June 30,						June 30,
	2014			2013			2014			2013
Pension (income) expense
Service cost	$	0.6		$	0.8		$	1.1		$	1.6
Interest cost		48.9			44.5			96.6			89.1
Expected return on plan assets		(66.1	)		(60.6	)		(129.2	)		(121.2	)
Amortization, net		8.5			12.6			16.3			25.2
Net pension income	$	(8.1	)	$	(2.7	)	$	(15.2	)	$	(5.3	)
Other postretirement benefits plan (income) expense
Service cost	$	1.2		$	1.9		$	2.3		$	3.7
Interest cost		4.2			4.0			8.4			8.1
Expected return on plan assets		(3.1	)		(2.9	)		(6.2	)		(5.9	)
Amortization, net		(6.5	)		(5.0	)		(12.9	)		(9.9	)
Net other postretirement benefits plan income	$	(4.2	)	$	(2.0	)	$	(8.4	)	$	(4.0	)