RESTRUCTURING CHARGES (Tables)

9 Months Ended

Sep. 30, 2017

Restructuring and Related Activities [Abstract]

Schedule of Restructuring Reserve by Type of Cost

The following table summarizes the 2017 and 2016 activities by major component of these restructuring actions and the remaining balances of accrued restructuring costs as of September 30, 2017 and 2016:

	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, 2016	$	4.6		$	2.1		$	—		$	—		$	—		$	6.7
Restructuring charges:
First quarter	3.9			9.2			0.2			2.9			76.6			92.8
Second quarter	0.2			—			0.8			7.2			—			8.2
Third quarter	—			—			0.9			4.3			—			5.2
Amounts utilized	(4.9		)	(5.6		)	(1.9		)	(12.1		)	(76.6		)	(101.1		)
Currency translation adjustments	—			0.1			—			—			—			0.1
Balance at September 30, 2016	$	3.8		$	5.8		$	—		$	2.3		$	—		$	11.9
Balance at January 1, 2017	$	3.4		$	7.5		$	—		$	1.8		$	—		$	12.7
Restructuring charges:
First quarter	—			5.7			0.2			2.3			—			8.2
Second quarter	—			5.8			0.1			2.6			—			8.5
Third quarter	—			7.0			—			2.2			—			9.2
Amounts utilized	(3.0		)	(4.6		)	(0.3		)	(8.8		)	—			(16.7		)
Balance at September 30, 2017	$	0.4		$	21.4		$	—		$	0.1		$	—		$	21.9

Restructuring and Related Costs

The following table summarizes the cumulative restructuring charges of these 2016, 2014 and 2010 restructuring actions by major component through September 30, 2017:

	Chlor Alkali Products and Vinyls				Winchester		Total
	Becancour		Capacity Reductions
	($ in millions)
Write-off of equipment and facility	$	3.5	$	76.6	$	—	$	80.1
Employee severance and job related benefits	2.7		5.1		13.1		20.9
Facility exit costs	3.5		19.6		2.3		25.4
Pension and other postretirement benefits curtailment	—		—		4.1		4.1
Employee relocation costs	—		1.7		6.0		7.7
Lease and other contract termination costs	5.3		32.0		—		37.3
Total cumulative restructuring charges	$	15.0	$	135.0	$	25.5	$	175.5