GOODWILL AND INTANGIBLES (Tables)

9 Months Ended

Sep. 30, 2017

Goodwill and Intangible Assets Disclosure [Abstract]

Schedule of Goodwill

Changes in the carrying value of goodwill were as follows:

	Chlor Alkali Products and Vinyls			Epoxy			Total
	($ in millions)
Balance at January 1, 2016	$	1,877.5		$	296.6		$	2,174.1
Acquisition activity	(45.3		)	(9.7		)	(55.0		)
Foreign currency translation adjustment	0.2			0.1			0.3
Balance at September 30, 2016	$	1,832.4		$	287.0		$	2,119.4
Balance at January 1, 2017	$	1,831.3		$	286.7		2,118.0
Foreign currency translation adjustment	1.4			0.4			1.8
Balance at September 30, 2017	$	1,832.7		$	287.1		$	2,119.8

Schedule of Finite-Lived Intangible Assets

Intangible assets consisted of the following:

	September 30, 2017								December 31, 2016								September 30, 2016
	Gross Amount		Accumulated Amortization				Net		Gross Amount		Accumulated Amortization				Net		Gross Amount		Accumulated Amortization				Net
	($ in millions)
Customers, customer contracts and relationships	$	678.0		$	(150.9	)	$	527.1	$	667.8		$	(112.9	)	$	554.9	$	673.3		$	(101.2	)	$	572.1
Trade name	7.1			(2.9		)	4.2		17.8			(12.7		)	5.1		17.9			(9.6		)	8.3
Acquired technology	85.8			(24.5		)	61.3		84.2			(15.0		)	69.2		85.1			(12.2		)	72.9
Other	2.3			(2.0		)	0.3		2.3			(1.9		)	0.4		2.3			(1.8		)	0.5
Total intangible assets	$	773.2		$	(180.3	)	$	592.9	$	772.1		$	(142.5	)	$	629.6	$	778.6		$	(124.8	)	$	653.8