RESTRUCTURING CHARGE (Tables)

9 Months Ended

Sep. 30, 2015

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Reserve by Type of Cost [Table Text Block]

The following table summarizes the activity by major component of these 2014 and 2010 restructuring actions and the remaining balances of accrued restructuring costs as of September 30, 2015:

		Employee severance and job related benefits			Lease and other contract termination costs			Employee relocation costs			Facility exit costs			Write-off of equipment and facility			Total
		($ in millions)
Balance at January 1, 2014		$	10.2		$	—		$	—		$	—		$	—		$	10.2
	Restructuring charges:
	First quarter	0.2			—			0.1			0.7			—			1.0
	Second quarter	1.2			—			—			0.8			0.3			2.3
	Third quarter	0.5			—			0.3			0.4			—			1.2
	Amounts utilized	(1.9		)	—			(0.4		)	(1.9		)	(0.3		)	(4.5		)
Balance at September 30, 2014		$	10.2		$	—		$	—		$	—		$	—		$	10.2
Balance at January 1, 2015		$	11.2		$	4.5		$	—		$	—		$	—		$	15.7
	Restructuring charges:
	First quarter	—			0.7			0.1			0.2			0.2			1.2
	Second quarter	—			—			0.2			0.2			0.3			0.7
	Third quarter	—			—			0.1			0.2			—			0.3
	Amounts utilized	(5.2		)	(2.8		)	(0.4		)	(0.6		)	(0.5		)	(9.5		)
	Currency translation adjustments	(0.5		)	(0.2		)	—			—			—			(0.7		)
Balance at September 30, 2015		$	5.5		$	2.2		$	—		$	—		$	—		$	7.7

Restructuring and Related Costs [Table Text Block]

The following table summarizes the cumulative restructuring charges of these 2014 and 2010 restructuring actions by major component through September 30, 2015:

	Chlor Alkali Products				Winchester		Total
	Becancour		Mercury
	($ in millions)
Write-off of equipment and facility	$	3.5	$	17.8	$	—	$	21.3
Employee severance and job related benefits	2.3		5.6		13.1		21.0
Facility exit costs	0.3		15.6		2.2		18.1
Pension and other postretirement benefits curtailment	0.4		—		4.1		4.5
Employee relocation costs	—		0.9		5.1		6.0
Lease and other contract termination costs	5.2		0.7		—		5.9
Total cumulative restructuring charges	$	11.7	$	40.6	$	24.5	$	76.8