Other Comprehensive Income (Loss) (Tables)

12 Months Ended

Dec. 31, 2014

Equity [Abstract]

Schedule of Other Comprehensive Income and Related Tax Effects

The components of other comprehensive income (“OCI”) and the related tax effects were as follows (in millions):

	Year Ended December 31,
	2014									2013									2012
							Net									Net									Net
	Before			Tax			of			Before			Tax			of			Before			Tax			of
	Tax			Effect			Tax			Tax			Effect			Tax			Tax			Effect			Tax
Defined benefit plan adjustments:
Net actuarial gain (loss) during the year	$	(4.8	)	$	1.7		$	(3.1	)	$	3.6		$	(1.5	)	$	2.1		$	(5.1	)	$	2.0		$	(3.1	)
Amortization of prior service cost
included in net income	—			—			—			(0.1		)	—			(0.1		)	(0.1		)	—			(0.1		)
Amortization of net actuarial gain (loss)
included in net income	0.3			(0.1		)	0.2			0.6			(0.2		)	0.4			0.4			(0.1		)	0.3
Net (loss) gain during the year	(4.5		)	1.6			(2.9		)	4.1			(1.7		)	2.4			(4.8		)	1.9			(2.9		)
Foreign currency translation gain (loss)	(3.0		)	—			(3.0		)	(1.5		)	—			(1.5		)	0.4			—			0.4
Other comprehensive income (loss)	$	(7.5	)	$	1.6		$	(5.9	)	$	2.6		$	(1.7	)	$	0.9		$	(4.4	)	$	1.9		$	(2.5	)

Schedule of Changes in Accumulated Other Comprehensive Income

The following table provides a summary of the changes in AOCI for the years presented (in millions):

				Foreign
	Defined			Currency
	Benefit Plan			Translation			Total
Balance as of December 31, 2011	$	(7.4	)	$	3.3		$	(4.1	)
Other comprehensive income (loss)	(2.9		)	0.4			(2.5		)
Balance as of December 31, 2012	(10.3		)	3.7			(6.6		)
Other comprehensive income (loss)	2.4			(1.5		)	0.9
Balance as of December 31, 2013	(7.9		)	2.2			(5.7		)
Other comprehensive loss	(2.9		)	(3.0		)	(5.9		)
Balance as of December 31, 2014	$	(10.8	)	$	(0.8	)	$	(11.6	)