PENSION AND POSTRETIREMENT PLANS (Tables)

6 Months Ended

Jun. 30, 2013

Postemployment Benefits [Abstract]

Schedule of Pensions and Postretirement Plans

The effect on operations of the post-retirement medical plan is shown in the following table:

	Three Months Ended June 30,				Six Months Ended June 30,
	2013		2012		2013		2012
Service cost for benefits earned	$	0.1	$	0.1	$	0.2	$	0.2
Interest cost on benefit obligation	0.7		0.6		1.3		1.2
Net amortization and deferral	0.3		—		0.5		—
Postretirement medical plan costs	$	1.1	$	0.7	$	2.0	$	1.4

The effect on operations for the Company Plan and the PEP is summarized as follows:

	Three Months Ended June 30,						Six Months Ended June 30,
	2013			2012			2013			2012
Service cost for benefits earned	$	0.6		$	0.6		$	1.2		$	1.2
Interest cost on benefit obligation	3.7			3.7			7.4			7.4
Expected return on plan assets	(4.3		)	(4.2		)	(8.6		)	(8.6		)
Net amortization and deferral	3.0			2.9			6.0			6.0
Defined benefit plan costs	$	3.0		$	3.0		$	6.0		$	6.0