Pension Plans and Other Postretirement Benefits

3 Months Ended

Mar. 31, 2013

Pension And Other Postretirement Benefits Disclosure [Abstract]

Pension Plans and Other Postretirement Benefits

Note 7. Pension Plans and Other Postretirement Benefits

The Company has defined benefit pension plans and defined contribution plans covering substantially all employees. Benefits under the defined benefit pension plans are generally based on years of service and/or final average pay. The Company funds the U.S. pension plans in accordance with the Employee Retirement Income Security Act of 1974, as amended, and the Internal Revenue Code.

The Company also sponsors several postretirement plans covering certain salaried and hourly employees. The plans provide health care and life insurance benefits for eligible retirees. In most plans, Company contributions towards premiums are capped based on the cost as of a certain date, thereby creating a defined contribution. For the non-collectively bargained plans, the Company maintains the right to amend or terminate the plans at its discretion.

       For the three month periods ended March 31, 2013 and 2012, the components of pension expense and components of other postretirement benefit expense for the Company's defined benefit plans included the following (in millions):

	Pension Benefits				Other Postretirement Benefits
	Three Months Ended				Three Months Ended
	March 31,				March 31,
	2013		2012		2013		2012
Service cost - benefits earned during the year	$	10.0	$	8.8	$	0.8	$	0.8
Interest cost on benefits earned in prior years		30.3		33.1		5.6		6.5
Expected return on plan assets		(43.8)		(45.4)		(0.1)		(0.2)
Amortization of prior service cost (credit)		0.8		1.6		(4.6)		(4.5)
Amortization of net actuarial loss		29.2		26.3		4.3		3.6
Total retirement benefit expense	$	26.5	$	24.4	$	6.0	$	6.2