SEGMENT INFORMATION (Tables)

9 Months Ended

Sep. 30, 2018

Segment Reporting [Abstract]

Segment Information

	Three Months Ended September 30,						Nine Months Ended September 30,
	2018			2017			2018			2017
Sales:	($ in millions)
Chlor Alkali Products and Vinyls	$	1,051.1		$	881.2		$	3,005.9		$	2,583.2
Epoxy	647.3			489.9			1,794.4			1,549.5
Winchester	174.0			183.8			510.8			515.8
Total sales	$	1,872.4		$	1,554.9		$	5,311.1		$	4,648.5
Income (loss) before taxes:
Chlor Alkali Products and Vinyls	$	210.8		$	129.7		$	490.7		$	270.0
Epoxy	31.1			(1.7		)	33.8			(11.0		)
Winchester	10.3			17.2			34.1			61.3
Corporate/other:
Environmental income (expense)	110.8			(1.8		)	104.1			(6.2		)
Other corporate and unallocated costs	(42.7		)	(28.4		)	(124.5		)	(87.6		)
Restructuring charges	(3.3		)	(9.2		)	(13.7		)	(25.9		)
Acquisition-related costs	(0.4		)	(1.1		)	(1.0		)	(12.5		)
Other operating (expense) income	(1.7		)	—			6.4			(0.1		)
Interest expense	(59.2		)	(53.1		)	(184.0		)	(158.0		)
Interest income	0.3			0.4			1.1			1.0
Non-operating pension income	5.4			8.4			16.2			25.5
Income before taxes	$	261.4		$	60.4		$	363.2		$	56.5

Disaggregation of Revenue

	Three Months Ended
	September 30, 2018
	Chlor Alkali Products and Vinyls		Epoxy		Winchester		Total
Primary geographical markets:	($ in millions)
United States	$	682.8	$	209.1	$	155.5	$	1,047.4
Europe	40.1		289.3		1.8		331.2
Other foreign	328.2		148.9		16.7		493.8
Total Sales	$	1,051.1	$	647.3	$	174.0	$	1,872.4

	Nine Months Ended
	September 30, 2018
	Chlor Alkali Products and Vinyls		Epoxy		Winchester		Total
Primary geographical markets:	($ in millions)
United States	$	1,956.0	$	589.9	$	460.2	$	3,006.1
Europe	136.2		763.0		7.0		906.2
Other foreign	913.7		441.5		43.6		1,398.8
Total Sales	$	3,005.9	$	1,794.4	$	510.8	$	5,311.1

	Three Months Ended
	September 30, 2017
	Chlor Alkali Products and Vinyls		Epoxy		Winchester		Total
Primary geographical markets:	($ in millions)
United States	$	589.5	$	159.8	$	166.5	$	915.8
Europe	31.6		206.8		2.5		240.9
Other foreign	260.1		123.3		14.8		398.2
Total Sales	$	881.2	$	489.9	$	183.8	$	1,554.9

	Nine Months Ended
	September 30, 2017
	Chlor Alkali Products and Vinyls		Epoxy		Winchester		Total
Primary geographical markets:	($ in millions)
United States	$	1,706.6	$	488.0	$	463.8	$	2,658.4
Europe	92.7		685.1		8.2		786.0
Other foreign	783.9		376.4		43.8		1,204.1
Total Sales	$	2,583.2	$	1,549.5	$	515.8	$	4,648.5

	Three Months Ended September 30,				Nine Months Ended September 30,
	2018		2017		2018		2017
Major product lines:	($ in millions)
Chlor Alkali Products and Vinyls
Caustic soda	$	539.2	$	442.7	$	1,571.1	$	1,272.5
Chlorine, chlorine derivatives and other co-products	511.9		438.5		1,434.8		1,310.7
Total Chlor Alkali Products and Vinyls	1,051.1		881.2		3,005.9		2,583.2
Epoxy
Phenolics and allylics	345.6		227.1		891.8		759.1
Epoxy resins	301.7		262.8		902.6		790.4
Total Epoxy	647.3		489.9		1,794.4		1,549.5
Winchester
Commercial	118.2		128.8		335.3		364.2
Military and law enforcement	55.8		55.0		175.5		151.6
Total Winchester	174.0		183.8		510.8		515.8
Total Sales	$	1,872.4	$	1,554.9	$	5,311.1	$	4,648.5