Pension and Post-retirement Plans: (Tables)

3 Months Ended

Mar. 31, 2013

Pension and Post-retirement Plans:

Components of Net Periodic Benefit Cost

The components of net periodic benefit cost recorded for the first three months of 2013 and 2012 were as follows (in millions):

	Pension Benefits						Post-retirement Benefits
	2013			2012			2013		2012
Service cost	$	0.7		$	1.4		$	0.3	$	0.3
Interest cost	2.1			2.9			0.5		0.8
Expected return on plan assets	(2.7		)	(2.7		)	—		—
Amortization of net loss	2.0			0.9			0.2		0.5
Amortization of prior service cost	(0.6		)	—			—		—
Net periodic benefit cost	$	1.5		$	2.5		$	1.0	$	1.6